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Standard

Plain Bearing Test Methods
2024-04-18
WIP
ARP5448C
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

Plain Bearing Wear Measurement
2023-03-13
WIP
ARP5448/7B
This standard details two methods of inspecting PTFE lined spherical or journal bearing wear outside the test apparatus. The methods described herein are applicable only to bearings which were unidirectionally loaded and the area of sliding wear is known and held constant throughout the dynamic test. The two methods described are: a. Destructive Inspection - Cut and measure (not applicable to molded liners) b. Nondestructive Inspection - Radial play (gauge) measurement
Standard

Plain Spherical Bearing Conformity Examination
2023-03-13
WIP
ARP5448/6B
This method outlines a standard procedure for performing conformity tests of bearings utilizing liners of bonded polytetrafluoroethylene (PTFE). The data from these tests shall be used to determine if the product meets the conformity requirements of the applicable specification.
Standard

Plain Bearing High Speed Oscillation Test
2022-09-27
WIP
ARP5448/2A
This test method outlines a standard procedure for performing cyclic reversing load testing on oscillating sliding bearings. The wear data from these tests is to be used for qualification requirements and to establish bearing design criteria.
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, Self-Lubricating, High Speed Oscillation -65 to +160 °F General Specification For
2021-03-03
WIP
AS81819B
This standard covers the requirements for spherical, self-aligning, self-lubricating bearings which are for use in the ambient temperature range -65 to +160 °F (-54 to +71 °C) at high cyclic speeds. The scope of the standard is to provide a liner system qualification procedure for helicopter sliding bearings defined and controlled by source control drawings. Once a liner system is qualified the source-controlled bearings are further tested under application conditions.
Standard

Bearings, Elastomeric General Specification for
2021-02-11
CURRENT
AS85598
This standard defines general requirements for spherical, radial-journal, conical, and thrust bearings which are of laminated elastomeric construction. These bearings are for use in an environment having a temperature spectrum of -65 to +160 °F while reacting steady state loads in addition to oscillating loads and motions. The operating temperature range of -65 to +160 °F reflects the current temperature range for existing parts, but allows for expansion in the future.
Standard

Rod End Locking Device Selection Criteria
2020-07-01
CURRENT
ARP6910
This ARP discusses common rod end locking devices with recommended applications and some of the advantages and disadvantages of specific configurations. An appendix is included with factors to be considered for selection of positive locking devices and a discussion of safetying devices for rod end assemblies.
Standard

Bearings, Sleeve, Plain and Flanged, Self-Lubricating
2019-09-16
CURRENT
AS81934C
This standard covers plain and flanged sleeve bearings which are self-lubricating by incorporating polytetrafluoroethylene (PTFE) in a liner in the bore for use in the temperature range of -65 to +325 °F.
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

Bearings, Plain, Self-Aligning, Self-Lubricating, 300 cpm Oscillation (13 fpm), -65 to +160 °F (-54 to +71 °C), Liners Less Than 0.015 inches
2018-08-23
CURRENT
AS82819
This standard covers the requirements for spherical, self-aligning, self-lubricating, bearings which are for use in the ambient temperature range of -65 to +160 °F (-54 to +71 °C) at high cyclic speeds 300 cpm (13 fpm) for liners with a thickness less than 0.015 inch. The scope of this standard is to provide a liner system qualification procedure for helicopter sliding bearings defined and controlled by source control drawings. Once a liner system is qualified, the source-controlled bearings are further tested under application conditions. Under Department of Defense (DoD) Policies and Procedures, any qualification requirements and associated Qualified Products List (QPLs) are mandatory for DoD contracts. Any materials relating to QPLs have not been adopted by SAE and are not part of this SAE technical document.
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