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Re: Wacking the Morse taper out of the spindle

Posted: Sat Jul 06, 2019 2:27 pm
by Mr Ron
shootnride wrote:
Fri Jul 05, 2019 7:23 pm
When I first got my lathe, the first time I had to remove the 5C adapter from the spindle I drove it out with a wood dowel. Like you, I was concerned about possible damage to the spindle bearings. Since then I have used a bearing splitter between the 5C adapter and the lathe spindle. Using this method the adapter comes out easily and doesn't put any undue stress on the bearings. I don't know if this method will work on your lathe or not, but it's some food for thought.

Ted
My Sheldon lathe uses a MT5/5C adapter with a push off collar. The collar is used to remove the adapter as it is threaded onto the threaded headstock spindle. I am missing the collar, so I have to wack the adapter out. So far, it doesn't seem to be doing any harm. The splitter sounds like a good idea. I will have to get one.

Re: Wacking the Morse taper out of the spindle

Posted: Sun Aug 04, 2019 6:34 pm
by Bill_Cook
A morse taper is very slight and doesn't need to be drawn in very hard to hold.

Re: Wacking the Morse taper out of the spindle

Posted: Sun Aug 04, 2019 9:35 pm
by John Hasler
Bill_Cook wrote:
Sun Aug 04, 2019 6:34 pm
A morse taper is very slight and doesn't need to be drawn in very hard to hold.

A Morse taper is a self-holding taper. One that fits well does not need to be drawn in very hard to need quite a bit of force to get out. That's why they have tangs and why Morse taper drill press spindles have slots for a drift to drive the drill bit out.

Re: Wacking the Morse taper out of the spindle

Posted: Mon Aug 05, 2019 11:23 am
by Mr Ron
I ran a run out check with a DI and couldn't get a readout greater than .0005" in the x or y direction, so I think the bearings are OK. The lathe (and the bearings)are 75 years old.