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JM Wild overhead milling / gear cutting drive motor.

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YouraT30/10/2020 14:19:41
33 forum posts
5 photos

Hi all.

I've acquired after much searching a nicely built JM Wild overhead gear cutting drive system, but minus the motor and its pulleys.

I know the pulley diameters and the motor speed (1425rpm), but can anyone help with the as-designed motor rating?

I'm thinking that 1/2hp would be ample for my expected worst case load of pinion cutting, but any knowledge and advice would be appreciated!



Roderick Jenkins30/10/2020 17:21:53
1967 forum posts
510 photos


According to Tubal Cain's book "Milling operations in the lathe" the JM Wild overhead gear used a 1/8 hp motor which TC thought a bit small for milling rather than clock gear cutting. I have used a similar arrangement with a 1/6hp induction motor that mills steel with a 1/4" cutter.




YouraT05/11/2020 22:01:07
33 forum posts
5 photos

Thanks Rob

1/6hp agrees with advice given elsewhere too - I have a slightly bigger motor to hand, and as long as it's not too heavy, I'll likely go with that.


Michael Gilligan06/11/2020 07:27:05
16620 forum posts
723 photos

Just for info. **LINK**

”. A complete construction article on this equipment commenced in the Model Engineer magazine, 20th November, 1981. “


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