This SAE Recommended Practice establishes the Antilock Brake System [ABS] sensor interface and envelope dimensions for standardizing the location of the ABS rings mounted on the inner end of spoke wheels, hubs and hub-rotor assemblies on the following axle designations.

a. FF

b. FL

c. FC

d. FH

e. L

f. R

g. U

h. W

j. N

k. P

Purpose

This document provides standardized wheel end ABS sensor interface dimensions for spoke wheels, hubs, and hub-rotor assemblies intended for normal highway use on trucks, buses, truck trailers and multi-purpose vehicles. The illustrations given in the document are for reference only. These illustrations show typical sensor ring designs and mountings, but are not limited to those shown. Serviceability considerations are not covered in this document.