Clutch hub fit in bearing
- Thread starter springs75
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Sorry, I guess I should have searched for previous posts as it looks like this has been covered before. So am I to assume that the hub being a sliding fit in the inner bearing race Is OK and no bearing retainer is needed? The original hub was a slight interference fit and I pressed it out.
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Too much play and you’ll get wobble. But I’m fighting the same issue as yours. I need to find the posts you found that said it’s not an issue.
Time Warp
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There is little need for the bearing to be more than a precise push fit having the circlip , any wobble will mainly be related to the bearing clearance being single row but even then it should be minimal.
Maybe the OEM bearing is a C0.
Maybe the OEM bearing is a C0.
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...It says in the manual, technical data section (A) "Clutch centre bearing specification: Deep gro[o]ve ball bearing - one dot"
Edit: One dot = C2.
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With the circlip there is still play in and out.
I tried the new hub on the old clutch drum with a new bearing last summer from OB. It’s slightly snugger.
I’m going to get a new bearing. I though the tolerance of the bearing had more to do with the balls or rollers than the outer dimensions.
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Sounds good to me.
Any wobble will come from the bearing, clerance or otherwise or the centre/center hub spline fit.
The bearing is only along for the ride unless the clutch lever is pulled in and am reminded I need to get a couple in C2.
The original Hoffmann's I removed the other week were very smooth running still but near no axial play so wondered if they were a tighter clearance (wondered wrong it seems)
I have baskets where the centre could be pushed out by hand, others that needed pressing.
A little Loctite 290 after the bearing is in place would not hurt but probably not needed unless there was easy push side play on new parts.
The basket would probably sit in the same running position to the front sprocket anyway (chain or belt) with movement at the hub to bearing.
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My brother talked to Steve Maney about this when he first installed this kit many years ago. The solution was to get a new hub that fit the bearing. Steve said that any bearing goop would not last.
Given that this bearing is quite old it wouldn’t kill me to get a new one. While I’m sure it’s serviceable I’d like a snugger fit.
I don’t know if @cNw has run into this before.
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Send it back.
Your new bearing should press cold into the new clutch body without any play.
If I understand your post concern. Actually I don't much understand it. You simply press the center in or tap it in carefully and lightly. It should fit.
5 Nortons later I've never had an issue with the clutch hub bearing fit. Never had one loose or wear out. The clutch hub center is another story . They get notched. Especially the very early commando models or the much later sintered bronze plate ones. The bearing itself is a non issue.
Your new bearing should press cold into the new clutch body without any play.
If I understand your post concern. Actually I don't much understand it. You simply press the center in or tap it in carefully and lightly. It should fit.
5 Nortons later I've never had an issue with the clutch hub bearing fit. Never had one loose or wear out. The clutch hub center is another story . They get notched. Especially the very early commando models or the much later sintered bronze plate ones. The bearing itself is a non issue.
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The hub should be machined to spec and doubt they would be that hit and miss to be tight or to loose.
I did notice the inner ID on OEM centres can vary a little when they go over the location of the bearing in the basket though.
It would want to be a decent push fit but severe pressing would be overkill maybe altering the clearance.
I use a tube for that type of fitment same as the sleeve gear in the gearbox, a machined tube with a sliding fit to the item being installed seats on the bearing inner race.
That way no driving in force is taken by the bearing itself.
It also comes back to that bearing is doing little rotational work unless the clutch is disengaged.
It is probably a $20 bearing.
The sleeve goes over the sleeve gear so it can be pressed in with no load to the bearing.
The clutch bearing would be little different to me.
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Don't you just love it when someone assumes where you live is just like where they live!
Some of us don't live within an hour or two of 'the bearing shop'!
And some of us might choose to use mail order for other reasons! Health in times of pandemic, or just so we don't alert the money monitoring system to bike expenses....'just going to the bearing shop dear' will trigger a response here!
Actually, since my Belt drive is from Norman White I recently got one from him, just to be sure I got the right sealed bearing!
One point Norman made was, there should be some play in the drum. Not too much, just enough for it to rock a little.
Clearly Swooshdave's is not acceptable and although my clutch centre was tight in the bearing, the bearing had way too much play, it rocked nearly as much as in the video. And when spun the bearing was gritty and notched.
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There is something I would just check out I were you. It looks to me as if there are witness marks from the centre running on the drum?
Fast Eddie
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Honestly TW... considering the horrible situation most of Europe is in right now, that jus’ ain’t funny. You’re starting to gloat. Please stop.
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I have spent most of the last year needing a signed form to go to more than 20km away, and occasionally just to get out of the door, the beach is 100km!
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I don't know what that guys problem is but am sure he has sand in his vagina was my point but now gone.
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To be honest FE, I didn't really understand the full meaning here?
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To be honest, one of my problems this afternoon is just you! You clearly know enough about motorcycles, but you do make assumptions about circumstances that affect other people that you have no knowledge of.
We all try to be helpful here if we can. I am sure you mean to do that to. But don't assume others can just go buy stuff, don't tell them their choice of buying method is wrong, it's up to them.
Right now, I can't even buy stuff from the UK the way I could up to 1st January!
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