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Antique Gas Engine Discussion

Removing stuck roller bearings from crankshaft.


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Old 02-27-2005, 03:33:18 PM
Jim Gorter Jim Gorter is offline
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Default Removing stuck roller bearings from crankshaft.

I am trying to remove the roller bearings from a crankshaft. I am having difficulty getting the inner race to move. Does any one have some advice or tips on how to get these off. Both are set up against a flange, so I cant get a puller jaw behind the race. Any and all help is appreciated, Jim.
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Old 02-27-2005, 04:25:06 PM
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Default Re: Removing stuck roller bearings from crankshaft.

I took my Alpha VW crank case to a weld shop and after laying a bead on the race, it should fall out. This engine used Ford Model T parts, so new Timken bearings and races were not a problem.

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Old 02-27-2005, 05:53:39 PM
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Craig A Craig A is offline
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Default Re: Removing stuck roller bearings from crankshaft.

Quote:
Originally Posted by Jim Gorter
I am trying to remove the roller bearings from a crankshaft. I am having difficulty getting the inner race to move. Does any one have some advice or tips on how to get these off. Both are set up against a flange, so I cant get a puller jaw behind the race. Any and all help is appreciated, Jim.
There are a couple ways to get the cone off the shaft. One is to knock the rollers off of the inner race and CAREFULLY grind one side of the race almost ALL the way through at which time a dull chisel against the roller flange should do the trick. The other is find a guy who is REALLY GOOD with a torch and burn it off. We burn them off most of the time because it's the quickest.
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Old 02-27-2005, 06:28:02 PM
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Keith Smigle Keith Smigle is offline
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Default Re: Removing stuck roller bearings from crankshaft.

I had an inner race that was seized on a spindle on my trailer so I just used a dremel to cut a slot thru the race and drove a screw driver in to the slot which spread the race and it came right off.
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Old 02-27-2005, 10:21:03 PM
Harry Harry is offline
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Default Re: Removing stuck roller bearings from crankshaft.

I guess when he said race, I was thinking outer race, or the cup. The cup was what I was referring to with the weld bead to heat it up.

As to the roller bearing, cut through the cage, get rid of the rollers and heat the inner cone.

Hell, I'm no machinist, but I do get by with a little help from my friends.

http://www.timken.com/products/beari...neer/intro.asp

http://www.bearings.machinedesign.co...ech_a01-5.aspx

http://www.bearings.machinedesign.co...emech_a02.aspx
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Old 02-28-2005, 02:13:48 PM
Jim Gorter Jim Gorter is offline
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Default Re: Removing stuck roller bearings from crankshaft.

Gentlemen, Thanks for the advice. Sounds like its time to break out the Victor Wrench. Harry, Thanks for the Bearing 101. I appreciate knowing a little more about what I am working on before I start swinging the hammer. Thanks again, Jim.
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Old 02-28-2005, 04:40:33 PM
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Default Re: Removing stuck roller bearings from crankshaft.

Remember..........I said REALLY GOOD with a torch.......
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Old 02-28-2005, 04:54:28 PM
Bob Fultz Bob Fultz is offline
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Default Re: Removing stuck roller bearings from crankshaft.

Only thing I'd like to add is if you start beating on that thing with a hammer and chisel, get a good pair of safty glasses. Those races can sent a small piece of steel across the room like a shotgun.
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Old 03-03-2005, 03:26:57 PM
Jim Gorter Jim Gorter is offline
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Default Re: Removing stuck roller bearings from crankshaft.

Gentlemen, I have emerged victorious from battle with stuck main bearings. First welded a quick bead on the cups and they tapped out easily. The cones were more stubborn so I took the torch and slowly trimmed down the side to within 1/8 inch of shaft. then they just tapped off. A little crocus cloth on the shaft and rod throw and were ready for new Timkin rollers. Thanks for the help, Jim.
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