Bearings for road b...
 

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[Closed] Bearings for road bike wheels

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Whereabouts do you guys source your road bike wheel bearings?
I’m after a full set for some American Classic Victory 30s circa 2010.
Do I need to take the bearings out for ref numbers or is there somewhere who will know which ones I need.
Cheers.


 
Posted : 04/05/2020 11:12 am
 JoB
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if you can see the bearings there will be a number printed on the seal, that's the bearing size

i ordered some bearings off these guys last week and they got to me in a couple of days


 
Posted : 04/05/2020 11:19 am
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This suggests that the combination of bearings changed over time so probably best to pull them out to check.

Fronts look like 6902 (unless 20mm axle) and the rear is a combination of 6902 and 15627.

Combinations listed here.


 
Posted : 04/05/2020 11:26 am
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if you can see the bearings there will be a number printed on the seal, that’s the bearing size

Do that with some Fulcrum wheels and you'll end up with the wrong bearings.


 
Posted : 04/05/2020 11:28 am
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What he said, you could probably find the answer on google but its easier to just go for one last ride, knock the old ones out, order fresh ones and they'll be with you quickly enough.

n.b. some wheels specify c3 bearings, this just means they have a smidgen of clearance between the balls and races, so you end up needing something like 6001-2rs c3.

Anyone know if c3 would be an advantage even when not specified? Or is it down to how tight a fit they are in the hub shell rather than something like protecting against binding under side loads.


 
Posted : 04/05/2020 11:31 am
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Thanks for the prompt replies guys. Will have a look at taking them out for a closer look.


 
Posted : 04/05/2020 11:35 am
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if you can see the bearings there will be a number printed on the seal, that’s the bearing size

Do that with some Fulcrum wheels and you’ll end up with the wrong bea

Nothing worse than reading 6902 off the seal, fitting a 6902 bearing and then wondering why the axle wont fit through the new bearing, then discovering you can get 17287 bearings with 6902 seals.


 
Posted : 04/05/2020 12:13 pm
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Anyone know if C3 would be an advantage even when not specified?

C3 are designed for high speed and/or high temperature applications. The smidge of clearance, (as you put it) is for a bit of extra thermal expansion allowance. The only benefit I can see in fitting them to bike wheels is that when brand new and you spin the wheel they're going to roll for aaaaaages as there's a bit less friction. But you've basically built in a few '000's miles of initial wear. I'd buy standard ones.


 
Posted : 04/05/2020 4:06 pm

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