Airend Rotors, Alignment, Clearances & Internal Geometry Engineering

AIREND ROTORS, ALIGNMENT, CLEARANCES & INTERNAL GEOMETRY ENGINEERING

It requires inspection for scoring, coating damage, corrosion, debris impact and rubbing; requires approved methodology for end clearances, inter-rotor relationships and housing clearances, which are airend-design specific and may require dedicated fixtures/metrology; explicitly prohibits 'tightening' clearances for efficiency because incorrect clearances can create thermal contact, seizure or rapid failure; and links rotor/housing condition, available OEM limits and economics to rebuild, exchange or replacement disposition.

Its authoritative body remains separately preserved. No rotor machining, coating, balancing or clearance capability claim without documented equipment, tolerances, QA and completed-work evidence. Mandatory review: Airend/Rebuild Specialist + QA/Metrology Reviewer.

Provisional new-series slug: /compressed-air-engineering/airend-rotors-alignment-clearances-internal-geometry/ | CTA: Request Specialist Airend Geometry Assessment

Clearance is not a number to make smaller. it is a controlled geometric relationship that must survive rotation, load and thermal expansion without contact

This page does not publish machining allowances, coating thicknesses, balancing grades, end clearances, inter-rotor clearances or housing-clearance values. Where actual limits, fixtures or metrology are unavailable, the correct engineering result is an unresolved specialist boundary—not a guessed dimension.

1 — Airend Identity

Internal-Geometry Governance: govern airend identity as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

2 — Rotor Identity

Internal-Geometry Governance: govern rotor identity as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

3 — Male/Female Boundary

Internal-Geometry Governance: govern male/female boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

4 — Housing Identity

Internal-Geometry Governance: govern housing identity as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

5 — Bearing Arrangement

Internal-Geometry Governance: govern bearing arrangement as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

6 — Approved Drawing/Data

Internal-Geometry Governance: govern approved drawing/data as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

7 — Specification Revision

Internal-Geometry Governance: govern specification revision as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

8 — Measurement Plan

Internal-Geometry Governance: govern measurement plan as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

9 — Fixture Plan

Internal-Geometry Governance: govern fixture plan as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

10 — Metrology Plan

Internal-Geometry Governance: govern metrology plan as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

11 — Temperature Control Boundary

Internal-Geometry Governance: govern temperature control boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

12 — Technical Reviewer

Internal-Geometry Governance: govern technical reviewer as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

13 — Qa/Metrology Reviewer

Internal-Geometry Governance: govern QA/metrology reviewer as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

14 — Capability Boundary

Internal-Geometry Governance: govern capability boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

15 — Revision Control

Internal-Geometry Governance: govern revision control as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

16 — Rotor Surface

Rotor Surface Condition: govern rotor surface as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

17 — Profile Surface Boundary

Rotor Surface Condition: govern profile surface boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

18 — Scoring

Rotor Surface Condition: govern scoring as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

19 — Rubbing

Rotor Surface Condition: govern rubbing as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

20 — Metal Transfer Boundary

Rotor Surface Condition: govern metal transfer boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

21 — Coating Damage

Rotor Surface Condition: govern coating damage as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

22 — Corrosion

Rotor Surface Condition: govern corrosion as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

23 — Pitting

Rotor Surface Condition: govern pitting as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

24 — Debris Impact

Rotor Surface Condition: govern debris impact as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

25 — Foreign-Object Mark

Rotor Surface Condition: govern foreign-object mark as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

26 — Thermal Discolouration

Rotor Surface Condition: govern thermal discolouration as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

27 — Deposit/Fouling

Rotor Surface Condition: govern deposit/fouling as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

28 — Edge Damage Boundary

Rotor Surface Condition: govern edge damage boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

29 — Photo Mapping

Rotor Surface Condition: govern photo mapping as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

30 — Surface Disposition

Rotor Surface Condition: govern surface disposition as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

31 — Rotor-To-Rotor Contact

Contact Evidence: govern rotor-to-rotor contact as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

32 — Rotor-To-Housing Contact

Contact Evidence: govern rotor-to-housing contact as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

33 — End-Face Contact Boundary

Contact Evidence: govern end-face contact boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

34 — Contact Location

Contact Evidence: govern contact location as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

35 — Contact Direction Boundary

Contact Evidence: govern contact direction boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

36 — Polish/Rub Mark

Contact Evidence: govern polish/rub mark as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

37 — Scoring Depth Boundary

Contact Evidence: govern scoring depth boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

38 — Metal Debris

Contact Evidence: govern metal debris as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

39 — Bearing-Collapse Hypothesis

Contact Evidence: govern bearing-collapse hypothesis as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

40 — Thermal-Growth Hypothesis

Contact Evidence: govern thermal-growth hypothesis as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

41 — Foreign-Object Hypothesis

Contact Evidence: govern foreign-object hypothesis as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

42 — Timing/Location Hypothesis

Contact Evidence: govern timing/location hypothesis as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

43 — Secondary Damage

Contact Evidence: govern secondary damage as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

44 — Severity

Contact Evidence: govern severity as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

45 — Correlation

Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

46 — Bearing Position

Bearing-Controlled Rotor Position: govern bearing position as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

47 — Radial Location

Bearing-Controlled Rotor Position: govern radial location as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

48 — Axial Location

Bearing-Controlled Rotor Position: govern axial location as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

49 — Preload/Endplay Interface

Bearing-Controlled Rotor Position: govern preload/endplay interface as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

50 — Shaft Journal

Bearing-Controlled Rotor Position: govern shaft journal as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

51 — Housing Bore

Bearing-Controlled Rotor Position: govern housing bore as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

52 — Bearing Seat

Bearing-Controlled Rotor Position: govern bearing seat as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

53 — Shoulder

Bearing-Controlled Rotor Position: govern shoulder as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

54 — Spacer/Shim Boundary

Bearing-Controlled Rotor Position: govern spacer/shim boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

55 — Rotor Position

Bearing-Controlled Rotor Position: govern rotor position as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

56 — Bearing Damage Influence

Bearing-Controlled Rotor Position: govern bearing damage influence as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

57 — Assembly Influence

Bearing-Controlled Rotor Position: govern assembly influence as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

58 — Thermal Influence

Bearing-Controlled Rotor Position: govern thermal influence as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

59 — Evidence

Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

60 — Geometry Confidence

Bearing-Controlled Rotor Position: govern geometry confidence as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

61 — Drive-End Boundary

End / Axial Geometry: govern drive-end boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

62 — Non-Drive-End Boundary

End / Axial Geometry: govern non-drive-end boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

63 — End Clearance

End / Axial Geometry: govern end clearance as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

64 — Axial Position

End / Axial Geometry: govern axial position as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

65 — End Face Condition

End / Axial Geometry: govern end face condition as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

66 — Housing End Surface

End / Axial Geometry: govern housing end surface as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

67 — Shim/Spacer Boundary

End / Axial Geometry: govern shim/spacer boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

68 — Measurement Location

End / Axial Geometry: govern measurement location as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

69 — Fixture

End / Axial Geometry: govern fixture as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

70 — Measurement Method

End / Axial Geometry: govern measurement method as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

71 — Approved Limit

End / Axial Geometry: govern approved limit as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

72 — Thermal Context

End / Axial Geometry: govern thermal context as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

73 — Repeatability

End / Axial Geometry: govern repeatability as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

74 — As-Found Result

End / Axial Geometry: govern as-found result as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

75 — Disposition

End / Axial Geometry: govern disposition as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

76 — Male/Female Relationship

Inter-Rotor Relationship: govern male/female relationship as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

77 — Timing Relationship Boundary

Inter-Rotor Relationship: govern timing relationship boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

78 — Mesh/Contact Boundary

Inter-Rotor Relationship: govern mesh/contact boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

79 — Profile Relationship

Inter-Rotor Relationship: govern profile relationship as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

80 — Angular Position Boundary

Inter-Rotor Relationship: govern angular position boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

81 — Inter-Rotor Clearance

Inter-Rotor Relationship: govern inter-rotor clearance as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

82 — Measurement Location

Inter-Rotor Relationship: govern measurement location as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

83 — Measurement Method

Inter-Rotor Relationship: govern measurement method as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

84 — Dedicated Fixture

Inter-Rotor Relationship: govern dedicated fixture as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

85 — Approved Limit

Inter-Rotor Relationship: govern approved limit as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

86 — Rotation Position Dependence

Inter-Rotor Relationship: govern rotation position dependence as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

87 — Bearing-Location Influence

Inter-Rotor Relationship: govern bearing-location influence as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

88 — Surface/Coating Influence

Inter-Rotor Relationship: govern surface/coating influence as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

89 — As-Found Result

Inter-Rotor Relationship: govern as-found result as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

90 — Disposition

Inter-Rotor Relationship: govern disposition as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

91 — Housing Bore/Profile Boundary

Rotor-to-Housing Geometry: govern housing bore/profile boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

92 — Radial Relationship

Rotor-to-Housing Geometry: govern radial relationship as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

93 — Clearance Location

Rotor-to-Housing Geometry: govern clearance location as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

94 — Housing Distortion Boundary

Rotor-to-Housing Geometry: govern housing distortion boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

95 — Rotor Position

Rotor-to-Housing Geometry: govern rotor position as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

96 — Bearing-Location Influence

Rotor-to-Housing Geometry: govern bearing-location influence as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

97 — Surface Condition

Rotor-to-Housing Geometry: govern surface condition as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

98 — Deposit Effect

Rotor-to-Housing Geometry: govern deposit effect as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

99 — Measurement Method

Rotor-to-Housing Geometry: govern measurement method as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

100 — Fixture

Rotor-to-Housing Geometry: govern fixture as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

101 — Approved Limit

Rotor-to-Housing Geometry: govern approved limit as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

102 — Temperature Context

Rotor-to-Housing Geometry: govern temperature context as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

103 — Repeatability

Rotor-to-Housing Geometry: govern repeatability as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

104 — As-Found Result

Rotor-to-Housing Geometry: govern as-found result as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

105 — Disposition

Rotor-to-Housing Geometry: govern disposition as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

106 — Shaft Runout

Shaft Runout & Alignment: govern shaft runout as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

107 — Rotor Shaft Boundary

Shaft Runout & Alignment: govern rotor shaft boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

108 — Journal Runout

Shaft Runout & Alignment: govern journal runout as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

109 — Coupling-End Boundary

Shaft Runout & Alignment: govern coupling-end boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

110 — Measurement Datum

Shaft Runout & Alignment: govern measurement datum as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

111 — Dial/Approved Instrument

Shaft Runout & Alignment: govern dial/approved instrument as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

112 — Fixture

Shaft Runout & Alignment: govern fixture as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

113 — Rotation Method

Shaft Runout & Alignment: govern rotation method as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

114 — Bearing State

Shaft Runout & Alignment: govern bearing state as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

115 — Temperature Context

Shaft Runout & Alignment: govern temperature context as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

116 — Approved Limit

Shaft Runout & Alignment: govern approved limit as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

117 — Repeat Reading

Shaft Runout & Alignment: govern repeat reading as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

118 — Alignment Implication

Shaft Runout & Alignment: govern alignment implication as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

119 — As-Found Result

Shaft Runout & Alignment: govern as-found result as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

120 — Disposition

Shaft Runout & Alignment: govern disposition as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

121 — Cold Measurement

Thermal Expansion & Operating Geometry: govern cold measurement as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

122 — Operating Temperature

Thermal Expansion & Operating Geometry: govern operating temperature as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

123 — Rotor Thermal Growth Boundary

Thermal Expansion & Operating Geometry: govern rotor thermal growth boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

124 — Housing Thermal Growth Boundary

Thermal Expansion & Operating Geometry: govern housing thermal growth boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

125 — Differential Growth

Thermal Expansion & Operating Geometry: govern differential growth as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

126 — Lubricant Temperature

Thermal Expansion & Operating Geometry: govern lubricant temperature as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

127 — Discharge Temperature

Thermal Expansion & Operating Geometry: govern discharge temperature as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

128 — Cooling Condition

Thermal Expansion & Operating Geometry: govern cooling condition as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

129 — Bearing Temperature

Thermal Expansion & Operating Geometry: govern bearing temperature as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

130 — Coating/Surface Influence

Thermal Expansion & Operating Geometry: govern coating/surface influence as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

131 — Load/Pressure Context

Thermal Expansion & Operating Geometry: govern load/pressure context as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

132 — Thermal-Contact Risk

Thermal Expansion & Operating Geometry: govern thermal-contact risk as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

133 — Approved Design Basis

Thermal Expansion & Operating Geometry: govern approved design basis as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

134 — No-Generic-Correction

Thermal Expansion & Operating Geometry: govern no-generic-correction as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

135 — Specialist Review

Thermal Expansion & Operating Geometry: govern specialist review as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

136 — Reuse

Restricted Rework & Disposition: govern reuse as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

137 — Controlled Rebuild

Restricted Rework & Disposition: govern controlled rebuild as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

138 — Rotor Rework Boundary

Restricted Rework & Disposition: govern rotor rework boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

139 — Housing Rework Boundary

Restricted Rework & Disposition: govern housing rework boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

140 — Machining Boundary

Restricted Rework & Disposition: govern machining boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

141 — Coating Boundary

Restricted Rework & Disposition: govern coating boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

142 — Balancing Boundary

Restricted Rework & Disposition: govern balancing boundary as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

143 — Oem Reman/Exchange

Restricted Rework & Disposition: govern OEM reman/exchange as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

144 — New Airend

Restricted Rework & Disposition: govern new airend as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

145 — Economic Comparison

Restricted Rework & Disposition: govern economic comparison as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

146 — Technical Risk

Restricted Rework & Disposition: govern technical risk as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

147 — Capability Evidence

Restricted Rework & Disposition: govern capability evidence as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

148 — Completed-Work Evidence

Restricted Rework & Disposition: govern completed-work evidence as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

149 — Qa Acceptance

Restricted Rework & Disposition: govern QA acceptance as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

150 — Final Disposition

Restricted Rework & Disposition: govern final disposition as restricted precision-geometry evidence. Record exact airend/rotor position, measurement datum/location, fixture, instrument, temperature/context, approved methodology, approved actual-airend limit, result, uncertainty and specialist disposition. Do not infer that a smaller clearance is better, do not transfer values between airends, and do not represent machining, coating, balancing or clearance-setting as a supported capability unless documented equipment, tolerances, QA and completed-work evidence exist.

151 — Premium Rotor & Internal-Geometry Register

152 — Rotor / Clearance Disposition Matrix

153 — Rotor Condition Controls More Than Efficiency

Rotor condition and internal clearances govern sealing, mechanical safety and efficiency.

154 — Geometry Changes With Thermal State

Thermal expansion, coating/surface condition, bearing location and housing geometry are explicitly identified as influences; cold workshop dimensions cannot be interpreted without the approved design basis.

155 — Surface Damage Has Different Meanings

Scoring, coating damage, corrosion, debris impact and rubbing indicate different repair/replacement pathways; preserve location and pattern.

157 — Never 'Tighten' Clearances for Efficiency

Incorrect clearances can create thermal contact, seizure or rapid failure.

158 — Technical / Rotor-Geometry Verification Gate

Verify identity, surface/contact evidence, fixture/metrology, approved actual-airend limits, thermal context and disposition. No machining/coating/balancing/clearance capability claim without documented evidence.

160 — AEO / Engineering FAQ Layer

Answer why rotor clearances matter, what scoring/rubbing indicates, why clearances cannot be tightened generically, how thermal expansion affects geometry, why dedicated fixtures may be required and when specialist rework is capability-gated.