I am working on an SV15 crankshaft grinder. I am not an experienced grinder.
I can just get my tolerances within 0.0002" and feel I should be able to accomplish this easier than I am.
I used 6208 ball bearings on the head and tail stock (many owners do). I am now questioning that. The inner races are pre-loaded on each other with a nut causing a significant side load on the bearings. From what I understand the only advantage to going to a 7208B-2RS angular contact bearing would be longer life. But I would have also thought that there would have also been some accuracy which may explain my slight run-out concern.
What do you think?
I can just get my tolerances within 0.0002" and feel I should be able to accomplish this easier than I am.
I used 6208 ball bearings on the head and tail stock (many owners do). I am now questioning that. The inner races are pre-loaded on each other with a nut causing a significant side load on the bearings. From what I understand the only advantage to going to a 7208B-2RS angular contact bearing would be longer life. But I would have also thought that there would have also been some accuracy which may explain my slight run-out concern.
What do you think?