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Hello all.

So I've a question for all you bandsaw / bearing experts out there. It involves the old Powermatic 140.

In trouble shooting for a serious wobbling/rocking problem, I've decided to replace the wheel bearings based on the age of the machine and the grit sound upon turning the wheels (perhaps could help with some wobble issues too, but I would like to do it regardless).

My problem is in removing the lower set of bearings, which sit in housings opposite each other on the same drive shaft running though the ID of both bearings. Essentially this leaves no place for purchase on the inner OR outer race, and no access from behind since each bearing is guarding the rear-end of the other. A well defended keep!

The pictures should make my words clearer:


One idea is to whack the drive shaft while supporting the housing unit, perhaps dislodging the shaft from both bearings, or perhaps dislodging the shaft from the ID of the uphill bearing while dislodging the downhill bearing from its housing. My concern is damaging a step (seat for bearing) on the drive shaft if there is indeed one. Second idea is to try and get purchase somewhere between the two races where the seal is. Not sure how feasible that is though. I do have a basic 3 jaw gear puller. Any ideas would be greatly appreciated!

Thanks,


Tyler
 

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Egg Spurt
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I just went through bearings on my truck..It's good to have the right tools for the job, but short of that I'd go talk with a machine shop about replacing them. They should have the right pullers and the right stuff to press new bearings in place if they're a tight friction fit..
 
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