Re: Alternative motor for the Unimat SL
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Hope you looked carefully at the shipping costs before you ordered. I wanted 3 of them, they wanted $63 and up in shipping, where one? was $11.98 or so. I'll be looking elsewhere. I'll get something one of these days. I'm a cheap bastrich, and can't spend that much on shipping. ;)
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY!
On Sunday, June 12, 2022, 08:26:54 PM CDT, sawbona@... <sawbona@...> wrote:
Hello:
> ... look at my album ...
Will do. Thanks for the heads-up.
> ... used a 130 W ...
Earlier today I ordered one similar to the one referenced by NapierDeltic in his post.
Only US$7.92.
https://www.aliexpress.com/item/33009729521.html?gatewayAdapt=glo2esp
> ... polyurethane belts and found they never slipped.
Yes, I have heard that they don't slip.
But I cannot help but thinking that a slipping belt is a sort of insurance.
And could eventually save a locked lathe.
> ... shock had been efficiently transferred to the motor bearings ...
> ... needed to be replaced (with high quality ones - I suspect the originals were a bit cheap and cheerful).
Yes.
Maybe I should do that directly do it before installing the motor.? 8^/
> ... motors get longer ...
Yes.
The version I ordered is only 80mm long (200W/280mN. m)
I think the 300W version is 172mm long and 400mN. m.
Just over twice as long for ~43% more torque, same diameter.
> ... shafts are 8 mm so a direct fit for the U3 pulley and the fixing screws line up with the slots in the U3 ...
That's good to know.
I also ordered a ER113mm chuck spindle just in case I want to use a different pulley.?
> ... new set of pulleys ...
> ... speed controller for it ...
> ... get the speed nearly right with the belts ...
Yes, same here.
I wonder if there's a power curve graph available for these motors.
It would help in finding the speed range with the highest torque.
Thank you very much for your input.
Best,
JHM
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Bill in OKC too