billmayo
04-20-2009, 06:38 PM
I had a very slight outter race clearance problem for the upper and lower guide brackets with the 627Z bearings that I quickly solved with a small hand grinder. I did not try any shims at the time. The 2 627Z bearings may have been OK but I like a little clearance for when the bearings become worn. I used the upgrade kit bolts that I ordered from Shopsmith.
Since skateboard bearings can be brought in tighter clearances and much higher RPM tolerances, I plan to try some of them in various locations later this year.
Bill, Would you please expand on this just a bit. Where do you find it necessary to do any grinding. I seem to be missing something because I just finished installing a pair of 627Zs in the band saw in lieu of an 827Z.
I used a different combination of washers than were in the original (Shopsmith provided) setup but no grinding.
Am I missing something.
As always, a new set of bearings really makes a difference in the noise level.
Since skateboard bearings can be brought in tighter clearances and much higher RPM tolerances, I plan to try some of them in various locations later this year.
Bill, Would you please expand on this just a bit. Where do you find it necessary to do any grinding. I seem to be missing something because I just finished installing a pair of 627Zs in the band saw in lieu of an 827Z.
I used a different combination of washers than were in the original (Shopsmith provided) setup but no grinding.
Am I missing something.
As always, a new set of bearings really makes a difference in the noise level.