Bearings - is it all balls?

[Yoda]

Giving my cycling time trial race bike a clean last night I found a tad of play in the bearings of the rear disc wheel.

Digging around on the manufacturer's website (Corima) I've ascertained that the bearing reference is 6001-VVC3.

Getting 6001 bearings on-line looks a cheap enough activity, but WTF is the VVC3 suffix?

Any bearing gurus out there who could shed some light, and perhaps suggest a suitable alternative?

 

[speedo]

Giving my cycling time trial race bike a clean last night I found a tad of play in the bearings of the rear disc wheel.

Digging around on the manufacturer's website (Corima) I've ascertained that the bearing reference is 6001-VVC3.

Getting 6001 bearings on-line looks a cheap enough activity, but WTF is the VVC3 suffix?

Any bearing gurus out there who could shed some light, and perhaps suggest a suitable alternative?

Hi yoda I normally just go to a bearing specialist when I want bearings for all kind of wheels ie mavic/zipp corima mopst of them will have the bearings you want.The only bearings that are any different are ceramic bearings but they are about 500 euro for a set for zipp wheels.

 

[Shep]

VXB is a bearing type, could be mis-read as VV3, that is if you were blind etc etc

 

[Yoda]

VXB is a bearing type, could be mis-read as VV3, that is if you were blind etc etc

Def VVC3.

 

[Graham W]

The 'VV' means it has two non-contact seals, Different to the normal kind of seals on say an M/C wheel bearing in that they don't contcat the inner race - so less friction.

The 'C3' means there is increased radial clearance between the inner and outer races, usually used for bearings that are going to run fast and hot (Like the new mains I've just put in my Norton).

Because of this they can feel a tad 'loose' even when new, so your old ones might be fine, unless of course they feel rough or gritty.

I can't see why you'd want those on a bicycle wheel though . . .

 

[Yoda]

I can't see why you'd want those on a bicycle wheel though . . .

Thanks Graham. Having now knocked them out they are a tad slack as well as being gritty.

Here's where they fit:-

http://www.corima.com/gb/produits/accessoires/default.cfm?family=accessoires_roulements

Have a look at the diagram of hubs 20016 / 20018 half down on the right hand side. The bearings are part no 270226.

 

[Graham W]

Hmmm, all the bearings they list for their hubs look pretty unusual types. I'm no expert; If it was me I'd give https://simplybearings.co.uk/shop/a...search_in_description=0&keywords=6001&&page=1 a ring and ask them what 6001 type they advise. I've always found them very helpful.

I imagine any sealed 6001 would do the job fine, and that the differences in use will largely be down to the level of friction in the bearing and its seals. You probably won't notice, unless shaving milliseconds off your next 25 miler is critical

 

[Yoda]

Went for these:-

http://simplybearings.co.uk/shop/p9....html?osCsid=33eacf70beb88bed6a884bc9dff96a62

£2.91 a go. That'll do for me.

Sod the milliseconds - I could benefit from Lance Armstrong's legs to take off several minutes.

 

[Wizard]

Sod the milliseconds - I could benefit from Lance Armstrong's legs to take off several minutes.

Put the old bearings back in and you'll have them in no time

 

[Steptoe]

The 'C3' means there is increased radial clearance between the inner and outer races, usually used for bearings that are going to run fast and hot (Like the new mains I've just put in my Norton).

. .

Thats it - You can get the same bearings with different qualities which are specified for some uses . Which is what the "C" numbers are.

e.g. BMW main bevel is a C3.