Brakes Work Example 2

WorkKey Level: 3
NATEF Automotive Tasks: V.C.7

A brake rotor is mounted on a hub.  A dial indicator is put on the center of the wear surface of the rotor.  While the rotor makes one complete revolution the needle sweeps from 60 to 54 on the gauge.  How many thousandths of run-out is in this rotor?

Solution:

0.060" –- 0.054" = 0.006" run-out.