IS headset bearing OD tolerance

zelak999

Hi
I have an integrated headset and the current bearings have an outside diameter of 41.8mm.
I have got hold of some spares but the OD on these is 41.1mm.
Does anyone know what the OD tolerances are?
Given that the bearing seats on a 45 degree chamfer in the headtube, does the width of the bearing matter greatly?

nicklouse

sounds like the wrong ones. All the specs can be found on Parktools or the headset standard pages or in the FSA headset book and other places.

Parktools link in sig and the rest can be found in the FAQs and the tech links above.

Bearing numbers would help as there is no 41.1 standard.

zelak999

Thanks for the info.
Do you think that 0.35mm either side of the bearing to the headtube would make much difference?
I'm struggling to find a 41.8 x 30 complete integrated headset and the oem one is poor.
I am also finding it hard just to get decent quality bearings in that size.
I've heard Enduros are good but seem pretty rare.
Can you suggest the best place to look?

nicklouse

yes get the correct bearings or you will damage the frame.

Campy standard are not hard to find.