1.1 This specification covers inner rings for needle roller bearings having thick outer rings.
1.2 The inner rings being specified are intended for use on unhardened shafts in conjunction with the MS51961 needle roller bearings specified in Specification F2246.
1.2.1 For needle roller bearings with thin outer rings (Specification F2162, MS17131, MS52141) use inner rings specified in Specification F2163.
1.3 Inner rings designed to this specification are intended for use in applications requiring high radial load with minimal angular shaft misalignment.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.5 This specification contains many of the requirements of MS51962, which was originally developed by the Department of Defense and maintained by the Defense Supply Center in Richmond. The following government activity codes may be found in the Department of Defense, Standardization Directory SD-1.2 Preparing activity Custodians Review Activity DLA–GS4 Army –AT Air Force–84 Navy–OS Air Force–-99
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM E18 Standard Test Methods for Rockwell Hardness of Metallic Materials*, 2022-05-01 Update
ASTM F2162 Standard Specification for Bearing, Roller, Needle: Drawn Outer Ring, Full Complement, Without Inner Ring, Open and Closed End, Standard Type*, 2024-04-21 Update
ASTM F2163 Standard Specification for Ring, Bearing, Inner: for Needle Roller Bearing With Drawn Outer Ring*, 2024-04-21 Update
ASTM F2246 Standard Specification for Bearing, Roller, Needle: Thick Outer Ring With Rollers and Cage
ISO 5593 Rolling bearings — Vocabulary*, 2023-02-28 Update
SAE J404 Chemical Compositions of SAE Alloy Steels
ASTM F2431-04(2018) history
2018ASTM F2431-04(2018) Standard Specification for Ring Bearing, Inner: For Needle Roller Bearing with Thick Outer Ring
2004ASTM F2431-04(2012) Standard Specification for Ring Bearing, Inner: For Needle Roller Bearing with Thick Outer Ring
2004ASTM F2431-04 Standard Specification for Ring Bearing, Inner: For Needle Roller Bearing with Thick Outer Ring