Is the lathe useable at all? If so you could bore the spare oversize to fit a plug in it and re-bore to the correct size. Another option would be to use some drink can to shim the pulley. It may take a few layers as the wall thickness of cans I have measured is 0.1mm. Try a few other things like oil cans, you may find a more suitable thickness.

Martin C

That's the problem with mini lathes … different factories, different detail; specs

Consider a sleeve as suggested above. A temporary wrap of insulation tape may last long enough to make one.

Neil

All those years ago, I fitted a sleeve made from copper plumbing tube to do just what Thomas wants. The sleeve does not to be a complete circle, cutting a bit out and squeezing it in to the required diameter worked perfectly for me. However, when the time came to pull the pulley off for the next iteration, it would not budge (and having been a Clyde- trained Land Rover driver brutality came easily to me). I bet that countershaft and pulley went to heaven together. Be careful !

Dick

Nominal bore is actually 9mm and I suspect your shaft is 8mm nominal OD. Plenty of 0.5mm wall 8mm OD tube on the internet which you could sleeve it with just cut a slot out of it for the key to fit (may need a longer key) Shaft may be 5/16" but if pully is also under then should be OK

If you want to bore it out as it is only plastic you could just turn the spindle by hand or cordless drill but you then have the problem of cutting a keyway.

Edited By JasonB on 08/04/2023 07:47:11

Edited By JasonB on 08/04/2023 07:48:22

Amadeal do an 8mm bore one but suggest contacting them to check it will work with your belt etc

Edited By JasonB on 08/04/2023 08:00:25

Hi Thomas,

Glad you have got the right items now.

It’s been a while since I did a belt change. It should be straight forward. Just make sure it’s running true. The motor mount needs to be correctly adjusted to make sure the motor is mounted horizontal rather than at an angle.

This is discussed somewhere in the past on this forum, but I am sure someone will be able to explain better if I failed to explain properly.

Difficult for me to check as I am away from office ( for the coming week) with limited internet access over the mobile.

Ketan at ARC

It would be interesting to know what sort of work you are doing on the lathe particularly diameter, material and depth of cut as overloading the machine could be the problem

Dig you go straight in with the 20mm drill bit?

Have to say that asking a low power motor, about 400 watts, is asking a lot.

The older original mains powered pistol drills used 350 watt motors and the limit was about a 3/8 or at most a 1/2" (say 13 mm) twist drill.

So 20 mm will call for a lot more torque, and feeding too rapidly will make matters worse.

This is a low power hobby machine, not a 20 hp industrial lathe.

How would you feel about driving a 20 mm drill in a breast drill?, Not a liught job!

Have you read the manual which should tell you the recommended maximum capacity?

Howard