All production was done in house from forging to the finish parts .Process inspection has to be done during every process and make records . The details processes are as below :
1)16MnCr5 alloy steel material cutting plus normalizing
2)Lathe machining into rough dimensions
3)First time hobbing
4)Carburizing 58-62HRC
5)OD grinding to finish dimensions
6)Second time hard-hobbing to required accuracy
7)Final inspection
8)Clear and package and mark