Brakes Work Example 1

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

A rotor is 0.975" thick; the discard thickness is 0.950", with a minimum machine measurement of 0.960".

a.  What is the maximum amount of metal that can be removed from the rotor during machining?

b.  Can 0.030" be removed from the rotor without exceeding machine to specs?

c.  How many cuts at 0.008" (0.004" from each side) can be taken without exceeding the limit? Justify your answer.

Solution:

a.  The maximum amount of metal that can be removed is:
     0.975" – 0.96" = 0.015"

b.  No

c.  One Cut
     2(0.008") = 0.016"
     0.016" > 0.015"