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Implement Alley Discussion Forum

Removing bearing lock collar

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Jim A.

05-25-2004 16:05:30




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I need to remove a lock collar from the end of a shaft to replace a bearing. What holds these things on? I got the set screw out, and I can turn it about a quarter turn in either direction by tapping it with a punch, but it wouln't come loose.




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JMS/MN

05-26-2004 12:45:02




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 Re: Removing bearing lock collar in reply to Jim A., 05-25-2004 16:05:30  
The others gave you options for removal. When you reassemble, it is normal to tighten the collar in the direction of rotation of the shaft. It should be tightened just enough to hold the collar to the shaft, then tighten the setscrew. Use a hammer and small punch/drift, but you don't need to whack it to kingdom come. You just risk breaking the inner race of the bearing.



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Mike

05-26-2004 06:06:55




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 Re: Removing bearing lock collar in reply to Jim A., 05-25-2004 16:05:30  
Had one a while back that was so hardheaded I thought I was dealing with my kids or something. Turned out the shaft had a little nick in it that wouldn't let it slip off. Did the same as what you're describing. Ended up using a gas wrench on it (cutting torch). Be careful not to cut into the shaft.
Mike



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bstrucker

05-26-2004 05:49:32




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 Re: Removing bearing lock collar in reply to Jim A., 05-25-2004 16:05:30  
It depends a lot on how big of hurry you are to get the machine back to work.If you have time and patience,keep wiggling,spraying with wd,and heating doesn't hurt.If you need it in a hurry,justcut or split the collar(they aren't hardened),take a puller and yank the shell off the bearing,then cut the inner part of the bearing off the shaft.Sometimes if you just heat them red hot,it will take the temper out of them,then you can split it.And sometimes,being that they are hardened,if you can support the shaft,you can give it a good smack with a big hammer and it will break.

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paul

05-25-2004 16:34:18




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 Re: Removing bearing lock collar in reply to Jim A., 05-25-2004 16:05:30  
Most likely a lot of rust in your case. Get it about 1/2 way between where it goes both ways, & see if a chisel will force it outward.

Torches & hammers. :)

--->Paul



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kyhayman

05-25-2004 18:39:28




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 Re: Re: Removing bearing lock collar in reply to paul, 05-25-2004 16:34:18  
Torches and hammers, thats me, heat, lots of heat :-).



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