[Stan65]

mgarblik,

It was a bit of a head scratcher. I did not use retaining compound or pin it as the interference fit was the same as a correct bearing one the bearing shell resizing was set.

I assume the same as you as to the one being exactly .005 over the others and perfectly concentric.

I made the mandrel in a few thought out steps.

First drill and tap for pipe plug. Didn’t want to cut slots until the hole was tapped.

Next cut slots, kinda ugly, just did it on my band saw as I don’t have a cutter for my mill. (Will be ordering one in the near future and would have used with my indexing head to make it more exact)

Put back in lathe and marked position for #1 chuck jaw in case I needed to remove it. (I didn’t which ensured concentricity when I reduced the OD)

Turned the OD of the mandrel for a nice slip fit of the bearing while leaving a shoulder for the bearing to seat against.

Not sure it was necessary, but I also reduced the diameter of the mandrel on the chuck side to help with the expansion when the pipe plug was tightened. I used ARP lube on the threads to help eliminate gaulding.

It didn’t take much pressure from the pipe plug to hold it nice.

The dremel wasn’t ridged enough and wanted to chatter on one of the test bearings. I was able to just use a new ceramic cutter insert and it machined really nice.

Long winded reply, but I’m pretty proud of this home fix. I feel like this is as good as original without any “might be ok” worries.

Thanks!
Stan.

I ult




and never removed it from the lathe chuck