开云体育

From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> on behalf of Gary_K via groups.io <themachinest0119@...>
Sent: Monday, March 31, 2025 11:05 PM
To: SouthBendLathe@groups.io <SouthBendLathe@groups.io>
Subject: Re: [SouthBendLathe] 10L Undermount Cone Pully Bearing Replacement

I just took a look at mine ( cabinet mount with the side panel removed at present) and it certainly looks like it should be possible in theory. I see direct access to the taper pin that secures the large drive pulley to the shaft - though it would require care to hammer it out without hitting the cabinet…. The cone pulley has two set screws, and I recall stoning the area where they contacted the shaft after I had everything apart. My bearings had both seized on the shaft and required considerable persuasion to get them to release and then slide off the shaft. Note the shaft has ‘steps’ on both ends for the bearing to seat against. The taper pin was cooperative for once, then I ended up using heat (torch) on the big drive pulley (careful, it’s cast iron…) and ice on the shaft, along with a wheel puller to get that pulley off. Then I managed to persuade the bearings out of the frame by removing the bolt-on keepers and forcefully tapping the shaft toward the tail stock end of the lathe. Once it came out of the frame, I used a wheel puller (it was tight) to pull the right end bearing from the shaft. I ended up ruining both bearings by forcing them off the shaft, but no damage to the shaft. The cone pulley came off more easily than expected using a bigger wheel puller. I had to clean up some burrs and rust spots on the shaft once it was all apart but it all cleaned up nicely. FWIW, I think I’d try it without removing the belt, but worst case, you can always cut the belt and drop the cone pulley unit so you have room to work…