[Hellbringer]

I need to remove a Y Axis from a VMC, and i do not know how motor coupling comes apart.

The machine is a Vulcan which is a rebranded Kasahara

Here are some pictures of the motor coupling

Attachment 376976

Attachment 376978

Attachment 376980

You can see a collar that is loose, that is just a collar... dont know what it does,

I also tried to remove the other set of nuts and they just spin...

I cant believe that it is this hard to replace a servo?

Any Suggestions?

[warrenb]

It looks like a QD bushing / coupler that just might be stuck on the shaft of the ball screw. I can't really see 100%. Judging by the rust the shaft is just rusted to the coupler. It looks like it may need heated up a bit to expand the female side of the coupler. But just be very careful you aren't going to burn anything.

Take a look at the catalogs and you can see how they work.

GGMFG > Products > Couplers/Clutches > Coupler Hubs
https://www.mdsofmi.com/product-cate...s/bushings/qd/
https://www.youtube.com/watch?v=_7zWbKRsh04

[Al_The_Man]

That is identical to to a Rexnord Type SN single flexible disc coupling.
Usually each side is keyed on.
Google Rexnord Cat #2000 Page #46
Al.

[Hellbringer]

Thanks guy!