moonlight machine
Diamond
- Joined
- Nov 19, 2007
- Location
- marysville ohio
I have some BMW race car trailing arms that we are putting big bearings in. I need to mill a bearing seat 4.919" diameter, then the shoulder the bearing sits on is 4.4" diameter, then the other bearing pocket is also 4.919" diameter. I am using my Narex boring bar to do the bearing pockets. These 2 bearing pockets need to be concentric. The 4.4" diameter is non critical, the bearing pockets are +-.0003 the 4.4" diameter is 1.978" +- .002 long. I have been doing this job on a Bridgeport and it is hell to line up the second bearing pocket after turning the arm over looking down the 4.4" bore to indicate the finished bore. I was thinking
I could set up a horizontal mill to do the first bearing pocket then reach through the 4.4 diameter to do the other bearing pocket. does this make sense? Is there a better machine or process? To make this an even bigger PITA there is no flat or square surface to clamp down on. The arm is supported on 3 2" sq solid steel pillars that are raised or lowered with shim stock to get it trammed in.
I could set up a horizontal mill to do the first bearing pocket then reach through the 4.4 diameter to do the other bearing pocket. does this make sense? Is there a better machine or process? To make this an even bigger PITA there is no flat or square surface to clamp down on. The arm is supported on 3 2" sq solid steel pillars that are raised or lowered with shim stock to get it trammed in.