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Standard

Bearings, Plain and PTFE Lined, Self-Aligning

2022-02-16
CURRENT
AS8942A
This SAE Aerospace Standard (AS) establishes the requirements for self-aligning, self-lubricating plain spherical bearings incorporating polytetrafluoroethylene (PTFE) in a liner between the ball and the outer race for use in a temperature range of -65 to +250 °F (-54 to +121 °C).
Standard

Bearings, Plain, Self-Aligning, All Metal, General Specification for

2021-03-15
WIP
AS8976B
This specification covers all metal plain spherical bearings which are self-aligning for use between -65 °F and 250 °F. this specification covers bearings with alloy stell races, aluminum bronze races, and an entierly CRES bearing (ball and race). All units are inces, unless otherwise stated.
Standard

Plain Bearing Lined Inside Diameter Plug Gaging

2019-05-23
CURRENT
ARP5448/9B
This test method establishes a standard procedure for using plug gages to evaluate dimensional conformance of lined inside diameters of bearings. Bearings covered by this test method include sleeve bearings and lined bore spherical bearings. Note that this method gives no indication of true cylindricity.
Standard

Plain Bearing Test Methods

2018-08-23
CURRENT
ARP5448B
This SAE Aerospace Recommended Practice (ARP) establishes methods for testing airframe plain bearings. The purpose of ARP5448 and its associated slash sheets is to document test methods commonly used to evaluate airframe bearings. These test methods may be referenced in specifications, part standards, purchase orders, etc., when the test is deemed appropriate to the intended use of the bearing by the end user of the bearing. These test methods are not intended to encompass every conceivable requirement for an airframe bearing. The end user of the bearing must exercise engineering judgment to determine the most appropriate standard and/or nonstandard tests for the application.
Standard

Bearings, Plain, Self-Aligning, Self-Lubricating, Low Speed Oscillation

2018-05-21
WIP
AS81820E
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).
Standard

Bearings, Plain, Self-Aligning, Self-Lubricating, Low Speed Oscillation

2014-07-22
CURRENT
AS81820D
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).
Standard

Bearings, Plain and PTFE Lined, Self - Aligning

2014-03-25
HISTORICAL
AS8942
This SAE Aerospace Standard (AS) establishes the requirements for self-aligning, self-lubricating plain spherical bearings incorporating polytetrafluoroethylene (PTFE) in a liner between the ball and the outer race for use in a temperature range of -65 to +250 °F (-54 to +121 °C).
Standard

Plain Bearing Lined Inside Diameter Plug Gaging

2012-09-26
HISTORICAL
ARP5448/9A
This test method establishes a standard procedure for using plug gages to evaluate dimensional conformance of lined inside diameters of bearings. Bearings covered by this test method include sleeve bearings and lined bore spherical bearings. Note that this method gives no indication of true cylindricity.
Standard

Bearings, Plain, Self-Aligning, All Metal General Specification for

2012-02-08
CURRENT
AS8976A
This specification covers all metal plain spherical bearings which are self-aligning for use between 65 °F to 250 °F. This specification covers bearings with alloy steel races, aluminum bronze races, and an entierly CRES bearing (ball and race). All units are inches, unless otherwise stated.
Standard

Plain Bearing Radial Limit and Ultimate Load Tests

2010-06-25
HISTORICAL
ARP5448/1
This test method outlines the recommended procedure for performing radial limit load and ultimate load tests on low speed airframe and high speed helicopter rotor head bearings.
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