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Bearings, Plain, Self-Aligning, Self-Lubricating, Low Speed Oscillation
- Aerospace Standard
- AS81820D
- Revised
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This SAE Aerospace Standard (AS) covers plain spherical bearings which are self-aligning and self-lubricating by utilizing polytetrafluoroethylene (PTFE) in a fabric composite or molded material that is bonded to the inner diameter surface of the race and when specified, to the bore diameter surface of the ball. These bearings are for use in the temperature range -65 to +325 °F (-54 to +163 °C).
Rationale
The reason for updating this document is to clarify the requirements for the subzero testing for Type A bearing qualification, mandate passivation for 440C balls after June 1, 2015, add Liquid Nitrogen testing requirements and to remove chrome plating on the ball OD.
Recommended Content
| Aerospace Standard | Bearings, Sleeve, Plain and Flanged, Self-Lubricating |
| Aerospace Standard | BEARING, PLAIN, SELF-LUBRICATING, SELF-ALIGNING, LOW SPEED, NARROW, GROOVED RACE, -65 TO +325 °F |
Topic
Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| Unnamed Dataset 3 | ||
| Unnamed Dataset 4 | ||
| TABLE 1 | TOTAL ALLOWABLE DEFLECTION FOR RADIAL STATIC LIMIT LOAD | |
| TABLE 3A | ORDER OF QUALIFYING BEARINGS | |
| TABLE 3B | ORDER OF QUALIFYING BEARINGS FOR TYPE A BEARINGS | |
| TABLE 4 | QUALIFICATION TEST SAMPLES | |
| TABLE 5 | QUALITY CONFORMANCE INSPECTIONS | |
| TABLE 6A | SAMPLING PLAN FOR QUALITY CONFORMANCE INSPECTIONS EXCEPT DESTRUCTIVE INSPECTIONS ZERO-BASED ACCEPTANCE PLAN (C=0, I.E., NO REJECTS) | |
| TABLE 6B | DESTRUCTIVE INSPECTION SAMPLING PLAN. ZERO-BASED ACCEPTANCE PLAN (C=0, I.E., NO REJECTS) | |
| TABLE 7 | MAXIMUM ALLOWABLE LOADED ROTATIONAL BREAKAWAY TORQUE AFTER TEST | |
| TABLE 8 | TEST LOADS FOR AXIAL AND RADIAL PLAY |
Issuing Committee
The objective of the Airframe Control Bearing Group (ACBG)is to provide industry experience and state of the art technology for airframe bearings, and issue as appropriate, published documents known as SAE Aerospace Standards. The focus of the Committees is present and future aircraft airframe control systems, bearings, and associated components.
The ACBG shall be responsible for the preparation, development, maintenance and promotion of all relevant specifications, standards, and requirements for airframe bearings, control system components, and associated hardware used in the design and construction of aerospace mechanical systems and subsystems. The ACBG shall also coordinate with other organizations for lubricants, control cables, and locking devices and shall utilize and promote the use of specifications published by those organizations. The ACBG shall function as a forum for technology transfer as it affects the Airframe bearing and control systems industry and for the enhancement of distribution channels.Reference
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