The
lever arm is heat-treated and tempered to develop the required
microstructure and base hardness.
After
heat-treatment, three features on the lever are finish machined.
-
The
bearing holes are honed to a 20 micron tolerance.
-
The
two bearing surface pads are ground to a tolerance of 30 microns.
-
The
profile is ground to a tolerance of 30 microns.
After
finish machining the parts are vibro-cleaned and washed.
|