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Attaching Mantua worm to 2mm motor shaft?

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  • Member since
    January 2014
  • 197 posts
Attaching Mantua worm to 2mm motor shaft?
Posted by ChrisVA on Friday, June 25, 2021 5:46 PM

I'd like to fit an old Mantua worm (3/32") onto a 2mm motor shaft (minebea SE15 motor). Is there a bushing or other tubing that would work for this? Would I press the bushing into the worm first using a vice, then push the motor shaft into that
Thanks!

  • Member since
    January 2004
  • From: Canada, eh?
  • 13,375 posts
Posted by doctorwayne on Friday, June 25, 2021 5:50 PM

North West Short Line should have a bushing/sleeve suitable for that.

Wayne

  • Member since
    May 2004
  • 7,500 posts
Posted by 7j43k on Friday, June 25, 2021 5:51 PM

NWSL sells these.  Part number 10159-9.

I THINK the bushing is a loose fit on the shaft.

I would first check for loose vs. tight fit.  Then press the tight fit together.  Then glue on the loose fit.  Be sure to de-grease.  I would probably use epoxy, but nobody else does; they use superglue.

 

Ed

  • Member since
    September 2014
  • From: 10,430’ (3,179 m)
  • 2,311 posts
Posted by jjdamnit on Friday, June 25, 2021 6:32 PM

Hello All,

A-Line also offers Brass Sleeves - #12053.

Next in line on my R.I.P. track is a HO Bachmann GP38-2 repair using these sleeves and Female Worm Couplings - -#12033.

The motor shaft is 2mm and the couplings are 3/32-inch.

I'll update the post Possible Solution For Cracked Axle Gears...Thoughts??? as soon as possible.

Hope this helps.

"Uhh...I didn’t know it was 'impossible' I just made it work...sorry"

  • Member since
    November 2013
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Posted by snjroy on Friday, June 25, 2021 9:54 PM

CA works for me. Using my vise, I give a light squeeze on the shaft to give it a bit of grip. Only if the sleeve is a bit loose of course...

Simon

  • Member since
    May 2004
  • 7,500 posts
Posted by 7j43k on Friday, June 25, 2021 11:13 PM

snjroy

CA works for me. Using my vise, I give a light squeeze on the shaft to give it a bit of grip. Only if the sleeve is a bit loose of course...

Simon

 

 

If it's that loose, perhaps you need a different supplier.

 

Ed

  • Member since
    November 2013
  • 2,775 posts
Posted by snjroy on Saturday, June 26, 2021 11:53 AM

It does not take much to be loose... Even good quality motors, flywheels and sleeves can be loose when assembled.

Simon

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