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Chipmaster Motor mounting

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Stuart Bridger15/10/2019 09:24:49
566 forum posts
31 photos

I have a Chipmaster where the motor/variator assembly is mounted on the cast U shaped frame. Does anyone else have this arrangement who could point me to how the frame is mounted to the base of the lathe. The rubber anti vibation pads on mine have degraded into a gooey mess. While I could strip it down, I thought it would be easier to get some advice before starting

1) The manual shows three bolts but only two pads, but is not clear which location has the pads. Mine appears to have a sticky rubber mess around all three?

2) What form are the pads, do they just rest on the base or do they have a through hole

3) How is the motor assembly secured to the based? Mine seems to pivot from the single mounting at the front, which applies tension to the drive belts. But i'm not sure if this is correct or just down to the fact that the pads have disintegrated. I get an alarming banging at high speed, which implies that the assembly is bouncing around.

4) Lastly if anyone has replaced these mounts, what have they used?

Thanks

Stuart

DC31k15/10/2019 17:50:00
1186 forum posts
11 photos

Manual pictures show correct mounting arrangement.

Three of everything.

Vibration pad is just like an exhaust mounting. 1/2" UNC male/female. Nominally 2" diameter. Nominally 1" high. Male bit screws into base, female receives bolt through adjuster.

Tension belts using adjusting screws.

Exact replacements probably hard to find, but 25mm high, 50mm dia. female/female with M12 thread would do and just require drilling out cabinet threads to use bolt inserted from underside and new M12 upper bolts.

Stuart Bridger15/10/2019 20:14:37
566 forum posts
31 photos

Thanks, good information

Stuart Bridger06/11/2019 21:31:34
566 forum posts
31 photos

Started the mount replacement tonight, you can see what state the old ones were in.

0i3a4612.jpg

 

Once I had scraped the rmains of the rubber off, they unscrewed easily with water pump pliers

0i3a4620.jpg

What was left

0i3a4622.jpg

 

Replacement was well overdue!
New mounts will wait for another session.

Edited By Stuart Bridger on 06/11/2019 21:32:07

Stuart Bridger16/11/2019 15:19:43
566 forum posts
31 photos

All done, Ended up buying M10 metric mounts as UNC were not easy to find. Made up some studs to adapt the thread.0i3a4630.jpg

Edited By Stuart Bridger on 16/11/2019 15:20:19

Howard Lewis16/11/2019 16:10:32
7227 forum posts
21 photos

A successful outcome. Good lateral thinking.

Well done!

Howard

Stuart Bridger16/11/2019 16:55:17
566 forum posts
31 photos

Thanks, lathe is now significantly quieter running.

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