Thanks Doug, If you noticed the 2.5" diameter stock in the lathe in two of the pictures you will see some
of the stock I was turning when the original motor gave it up. It cut like butter after I put the new motor/vfd
on the lathe. Very happy with the huge increase in torque.
That 2.5" diameter chunk in the lathe is in the process of being turned into your Universal Grinding Fixture.
SDP/SI has a full line of toothed, grooved, O'ring, flats and V belts and pulleys for fractional hp use and are even better for torque. Although making the pulleys for a Groove belt would be easier and a fun challenge.
‘‘Always do right. This will gratify some people and astonish the rest.’’
Hello Dan and PJ, The belts are very interesting with so many types out there.
I did use a Poly segmented v-belt on my CNC spindle and no problems at all.
Nice small profile. Seems they use these on vacuum cleaners and sewing machines.
I wanted to try a 3L section Kevlar belt for the lathe and see how that works out.
The belts are available for a good price and they look tough.
Both the lathe to jack shaft set and the motor to jack shaft set will be replaced.
I planning to have them on hand should all the teeth on my timing belts disappear! LOL
Thanks for all the suggestions and comments
What kind of belt do the one speed brushless mini lathes use? I switched to XL first on my old 7x10 - 3/8” wide ones fit under the belt cover, but they’re only a little stronger than the similarly old fashioned original metric timing belts. They’re easy to find, though, and are easier to replace than headstock gears.
I think more modern timing belts have bigger capacity.
I am thinking that I would rather have the drive belt slip than rip out the teeth! We will see down the road which approach is the best for me.
Thanks for the comment,
My 7x10 has a poly-vee belt drive now, with a 6-rib J-section belt to the headstock countershaft running on a pair of 1-1/4” pulleys. It hasn’t slipped but my collets only take up to 9/16”, so it’s hard to compare.
My mill has 3-rib J belts on slightly bigger pulleys and in low gear they can slip, even with just a 350W motor.
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