Slow / stopped lathe speed when tightening tail - Woodworking Talk - Woodworkers Forum
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post #1 of 8 Old 07-08-2020, 11:07 PM Thread Starter
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Slow / stopped lathe speed when tightening tail

Hi All,

When I tighten the tail end of my lathe, it slows or stops the spinning. Any ideas what might be wrong? I attached pics of the set up.
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post #2 of 8 Old 07-09-2020, 08:22 AM
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It could be bad bearings, or your belts could be slipping. You might have the tailstock too tight. Try backing off of it a little.

What kind of lathe do you have, and pictures would help.

Don in Murfreesboro, TN.
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post #3 of 8 Old 07-09-2020, 08:22 AM
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No pictures showing. Sounds like you have a belt driven headstock/spindle and the belt is slipping.

Alexis de Tocqueville was a very smart man.
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post #4 of 8 Old 07-09-2020, 10:02 AM
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Quote:
Originally Posted by ecory31 View Post
Hi All,

When I tighten the tail end of my lathe, it slows or stops the spinning. Any ideas what might be wrong? I attached pics of the set up.

What exactly stops spinning? The live center spins but slows or stops when more pressure is applied? The drive stops spinning when more pressure is applied? The motor stops spinning?

More information would be helpful.
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post #5 of 8 Old 07-10-2020, 12:49 AM Thread Starter
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At first it turns and then it comes to a stop. Both the tailstock and headstock stop. The belt continues to move but stops spinning the headstock.
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post #6 of 8 Old 07-10-2020, 07:39 AM
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From what you describe:

1) Belt is loose and slipping under load. Make sure belt is tight on motor/spindle. 1/4" depression with moderate finger pressure in the middle of the belt between motor and spindle is about right.

2) Spindle starts sticking as it warms up. If 1) above is OK, run it until it stops, then try turning spindle by hand. If it turns hard, it's sticking. Needs lube, possibly new bearings.

One of the two should resolve the problem.
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post #7 of 8 Old 08-11-2020, 08:53 PM
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Just a suggestion to check out.

Are the bearings in the live centre moving freely.
If they have ceased up that could be the problem.
HTH
Col
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post #8 of 8 Old 08-12-2020, 11:42 AM
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have you been doing the required maintenance on the headstock?
the two caps on top of your headstock are for lubing the bearings/bushings in the headstock
open them: if they're full of grease screw them down a 1/4 turn each time you use the lathe
it they're dry, put a few drops of oil in them each time you use your lathe

the above is for daily maintenance, since it is possible the bearings/bushings are dry you need to free them up
disassemble the headstock and clean/lube with oil or grease, use what it looks like was original lube
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