Anyone able to recommend a machine shop? The output shaft on my doubler needs to be turned down about 50/1000ths.

Curious why your shaft needs turned down?

Is it a bearing or seal surface? Is the shaft hardened?

It's a hair larger than factory spec. It is hardened.

Justin - are you removing 0.050 inches or 0.005 inches?
If the larger - be very careful as the harness depth typically is 0.0200-0.0800 inches. I think Digger could probably speak more to this, but the depth is typically small if case hardened. Digger, your thoughts?

It's the bearing surface where the input shaft fits into the bearings inside the rear output. It's about .050 off.

Not sure who made your shaft, but many are case-harden, like rt9 said. That case depth would be ~0.020", so anymore than .040" and the case is gone.

Also be aware that bearing and seal surfaces tend to be ground, not cut after heat treat. Tolerances are in the .0001" range, which is beyond the accuracy of a typical lathe. I'm curious why the shaft doesn't fit the bearing. (Besides the obvious)

Justin, do you know the bearing number? Might be possible to get a larger I.D. with same O.D. and width. If you have the number I can check tomorrow at work.

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Justin -

Can you post a few pictures of the shaft and the assembly? Who made the shaft?