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Author Topic: Ball bearing integrity  (Read 1001 times)

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Offline The Gurg

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Ball bearing integrity
« on: July 16, 2018, 06:53:18 AM »
Removed the countershaft bearing with two hammers. I used the handle of a wooden hammer to drive the bearing out while hitting it with another hammer. Thinking I could have hit to squarely on the center of the bearing, and this could have compromised the integrity.

Do you think the bearing is ok?
How do you check if a ball bearing is still worth reusing?
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Offline Duke McDukiedook

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Re: Ball bearing integrity
« Reply #1 on: July 16, 2018, 07:24:47 AM »
You don't, you just buy a new one. Bearings are cheap enough you just replace it.
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Offline American Locomotive

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Re: Ball bearing integrity
« Reply #2 on: July 16, 2018, 01:54:48 PM »
The only real safe way to remove a ball bearing is to press or tap directly on the "retaining" race. Hammering through the bearing will often damage the races and/or the ball bearings inside. By "through the bearing" I mean pressing on the inner race when the outer race is the one that's press-fit into something, or hammering on the outer race when the inner race is press fit onto something.

Basically any kind of impact force that has to be transmitted through the balls isn't good.
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Offline jgger

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Re: Ball bearing integrity
« Reply #3 on: July 16, 2018, 05:51:16 PM »
That goes for people too! :o
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Offline DaveBarbier

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Re: Ball bearing integrity
« Reply #4 on: July 17, 2018, 02:15:22 AM »
Quote from: jgger on July 16, 2018, 05:51:16 PM
That goes for people too! :o
Perfect
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Offline The Gurg

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Re: Ball bearing integrity
« Reply #5 on: July 17, 2018, 07:36:45 PM »
Ok,great advice all the way around. So now where do I get a ball bearing set for everything in the engine? Haven’t found a cheaper set.
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Offline Bankerdanny

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Re: Ball bearing integrity
« Reply #6 on: July 17, 2018, 08:15:34 PM »
What bike do you have?
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Offline The Gurg

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Re: Ball bearing integrity
« Reply #7 on: July 17, 2018, 08:47:56 PM »
1975 CB750 K-5
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Offline Duke McDukiedook

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Re: Ball bearing integrity
« Reply #8 on: July 18, 2018, 07:57:52 AM »
Never hurts.
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Offline przjohn

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Re: Ball bearing integrity
« Reply #9 on: July 18, 2018, 01:22:09 PM »
Quote from: The Gurg on July 17, 2018, 08:48:55 PM
When I go to pop the new bearing in. Throwing in the freezer for a couple hours before hand should make it easier to insert right?

Maybe I’m missing something here. You’re talking about the countershaft bearing mounting it back on the shaft, correct? The outer race goes into the case halves that are put back together with the shaft in place so that doesn’t matter. If you freeze the bearing and are trying to put it on the shaft  you are making it worse as the inner race will now get smaller. You would want to warm the bearing and not cool it I would think.
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Offline 754

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Re: Ball bearing integrity
« Reply #10 on: July 18, 2018, 01:35:26 PM »
Exactly..
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Offline DaveBarbier

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Re: Ball bearing integrity
« Reply #11 on: July 18, 2018, 04:16:13 PM »
You’re talking about the countershaft bearing that fits into the case, right? The one by the oil pump? If that’s the case then yes, freeze the bearing and it’ll pop right in.
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Offline The Gurg

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Re: Ball bearing integrity
« Reply #12 on: July 18, 2018, 09:56:04 PM »
Yeah I’m talking about the countershaft bearing going into the case. It’s definitely a snug fit.
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