Description / Abstract:
This SAE Recommended Practice is intended for hubs and spoke
wheels used on Class 6, 7, and 8 truck/truck-tractor non-powered
front axles, powered and non-powered rear axles and trailer axles,
for which bearing setting is manually adjusted. Assemblies using
spacers to control bearing preload and endplay may differ in
geometry and bearing componentry.
Purpose
The purpose of this document is to establish dimensional
guidelines to promote functional standardization of wheel hubs and
spoke wheels in the areas of fasteners, bearing cup, seal bore and
axle drive shaft interface or hubcap attachment. This document is
not intended to exclude use of wheel hub designs, which do not meet
the dimensional guidelines for use on defined axle
configurations.