Tapered headset bearings

ishaw · Sep 17, 2018

I need to buy a lower race bearing. Research suggests it's a zs56/40.

My Google fu must be failing me as I can't seem to find any, aside from hope which are too pricy for me (it's a 650b build to see if I like it, so don't want to spend too much).

Even my usual go to UK based online bearing places don't seem to recognise the bearing code.

Anyone got any ideas on where I can find a cheap bearing that will fit, or even a complete headset?

clubby · Sep 17, 2018

https://www.superstarcomponents.com/en/ ... om-set.htm

jimo746 · Sep 17, 2018

clubby":3kzdrmlj said:
https://www.superstarcomponents.com/en/uk-made-headset-bottom-set.htm

Theres nothing Clubby doesn't know about balls (bearings)

The History Man · Sep 17, 2018

Possibly my shed. Do you have dimensions? I bought something like that way back by mistake and chucked in the spares box. I can stick a vernier on it ?

ishaw · Sep 17, 2018

Re:

Thanks. I was hoping to just get a bearing as I have the rest of the headset already, but this is certainly an option.

I'll get the ruler out on the one I have, verniers are a bit dodgy but will try them as well.

ishaw · Sep 17, 2018

The History Man":mcbu958q said:
Possibly my shed. Do you have dimensions? I bought something like that way back by mistake and chucked in the spares box. I can stick a vernier on it ?

Using verniers the od is 52mm, the id is 39.9. It's an angular contact bearing, but not sure what the angle is. A bit of research suggests this is a pretty common tapered set up, the 56 in the headset name is the outer dimension of the cup, not bearing.

Credit to park tools for the useful info: https://www.parktool.com/blog/repair-he ... ion-system

The History Man · Sep 18, 2018

mine is cup od 44 and bearing id 30.1 weird tange thing

ishaw · Sep 18, 2018

Re:

No worries, thanks for looking.

Andy B · Sep 18, 2018

Try kinetic bike bearings website

We use them in the workshop, they certainly know their stuff

dazdc5 · Sep 19, 2018

Re:

Try THESE

Tapered headset bearings

ishaw

clubby

jimo746

The History Man

ishaw

ishaw

The History Man

ishaw

Andy B

dazdc5

Retro Guru

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