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NGrimberg
10th Jul 2020, 08:33 PM
I am having an issue with a stepper motor on machine that I bought used 6 years ago. The company that makes it is out of business and I need to find a replacement. Most new NEMA 34 motors are using a 1/2" shaft and this one has a 3/8" shaft. I do not mind a bigger motor as I have plenty of space and have updated Gecko drivers but need to work with the pulleys and belt size I have. Here is the info I have.


Current Motor
MCG IH34110
Does not need shaft on both sides as only one is used.


Pully
3/8" ID with 7/8" OD .080 pitch




Any recommendations on motors and or pulley combinations would be great.

BaronJ
11th Jul 2020, 12:12 AM
I am having an issue with a stepper motor on machine that I bought used 6 years ago. The company that makes it is out of business and I need to find a replacement. Most new NEMA 34 motors are using a 1/2" shaft and this one has a 3/8" shaft. I do not mind a bigger motor as I have plenty of space and have updated Gecko drivers but need to work with the pulleys and belt size I have. Here is the info I have.


Current Motor
MCG IH34110
Does not need shaft on both sides as only one is used.
3/8" ID with 7/8" OD .080 pitch

PullyAny recommendations on motors and or pulley combinations would be great.




Hi Norman,

Does this help ? Watch out for wrap !

https://www.ebay.com/itm/MCG-IH34113-1-8-Step-5-VDC-Stepper-Motor-W-Sick-Stegmann-ATM60-A1M12X12-Encoder-/291961776343

nigelpearson
11th Jul 2020, 10:28 AM
Left-field idea:


Bug cheap NEMA34
Find someone with a cylindrical grinder (or a toolpost grinder on a lathe), and grind shaft down?

Sterob
11th Jul 2020, 01:43 PM
Machine the pully out to 1/2"?

russ57
11th Jul 2020, 08:54 PM
Room for an adapter 1/2 bore one end, 3/8 shaft at the other?
Much easier to go the other way... :D

rcaffin
13th Jul 2020, 06:56 PM
Bore out pulley. Not hard, and pulleys are cheap.
Mounting the pulley so it is centred is key. Use existing hole as a guide.

Cheers
Roger