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J2535_200612 - Setting Preload in Heavy-Duty Wheel Bearings

Document Number: J2535_200612
Revision Number:
Setting Preload in Heavy-Duty Wheel Bearings
This SAE Recommended Practice applies to the four primary, large volume applications in the class 7-8 heavy-duty market place, as specified in SAE J1842: a. "N" trailer axle b. "R" powered rear axle c. "FF / FG" nonpowered front axle d. "P" trailer axle This document applies to on-highway, disc wheel / outboard drum brake applications. It is not applicable to those applications that exceed the GAWR ratings or the load line restrictions listed in columns "A," "B," and "C" of Table 1. Load lines are measured from the inboard bearing cup backface as shown in 3.4. This document establishes preload force values only. The methodology to obtain these force values must be determined by the fastener supplier and/or axle assembler. This document reviews the bearing system. It is NOT intended to prescribe (new or existing) axle and/or hub manufacturers' ratings and/or specifications.
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