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SAE J2301 (JAN2021)

Current Revision

Universal Joint End Yoke Connection (Earwork)

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This document specified the main dimensions and tolerances which affect interchangeability between end yoke earwork for the most common North American-used universal joints. Dimensions and tolerances of the mating universal joints are left to the discretion of the universal joint manufacturers. The term “earwork” refers to the configuration and geometry defining end yoke connections directly provided for universal joint cross attachment of drivelines. Earwork for certain styles of universal joint connections and flange connections have for a long time been proprietary to certain manufacturers. Over years of usage, proprietary rights have expired and the industry, as a whole, has used these earworks as standard. In an effort to tabulate some of the long-established practices, the following SAE Recommended Practice has been compiled. Manufacturers do from time to time, as the need arises, change tolerances or fits to better enhance component performance. This document has been prepared as a reference, and is a snapshot of current technology. The half round (strap connection), full round (retainer plate type connection), and wing type connection are covered in this document. For an understanding of these end yoke styles, please refer to SAE J901. There are earwork forms that still are proprietary and are not covered by this document.

SDO SAE: SAE International
Document Number J2301
Publication Date Jan. 7, 2021
Language en - English
Page Count 7
Revision Level 202101
Supercedes
Committee
Publish Date Document Id Type View
Jan. 7, 2021 J2301_202101 Revision
Jan. 15, 2016 J2301_201601 Revision
Aug. 22, 2005 J2301_200508 Revision