The next step is take the belt off between the motor and countershaft to see if the motor is definitly the source of the noise. Also check that all the pulleys are not slipping on the shafts.

Les.

Motor looks to be running way to slow to me suggesting more than just the fan to me. Does not seem to be getting upto speed so maybe a start capacitor or switch problem.

If Jason is right then it may already be to late for this motor. As the motor speeds up can you hear a click ? or as it slows down – this will be the centrifugal switch working – not always audible though. The start windings will burn out in little more than a few 10s of seconds ! If the motor doesn't spin up to speed almost instantly with the belt off start capacitor may have failed. Is the motor wired up correctly ? Has it got a reversing switch ? Some members may be able to help you if your near them – where are you ? Noel.

FWIW the drive pulley /countershaft gearing is way off; a 2"-and-a-bit-ish motor pulley should be driving an 8 or 9" pulley on the countershaft, so at the moment the motor is having to work extra hard (like trying to pull away in top in a car).

It will help a lot if you put the lathe spindle drive onto the 'slowest speed' pair.

The motor might also be clapped, or even a bit cooked from this treatment, but fixing the gearing before further testing will at least clear the field for an unambiguous result.

Edited By DiogenesII on 01/04/2023 12:21:24

Looks like your Vee belts are loose to me.
Tighten them and run the lathe again.
Gingerbeer