Old 12-17-2015, 05:29 PM
  #44750  
sewbeadit
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Join Date: Sep 2011
Location: Washington
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Is this considered a "press fit" spool pin? Found on my Singer 237.[ATTACH=CONFIG]538265[/ATTACH]
When I got this machine I thought the spool pin was kind of short, but it was finished on the end, so I thought I must be wrong. Then I took the top off and here is what I found, I am sure it was pressed in.

Originally Posted by Rodney View Post
Press fit is a correct term. Machinists use it. It means that the part needs to be pressed or tapped into it's hole like on bearings. Bearings are generally just a few thousandths of an inch larger than the hole they fit in so they need to be pressed it. It keeps them from spinning in the hole and tearing it up. The shaft that rides in the bearing can be a press fit as well.
Rodney
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