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 Post subject: Tapered headset bearings
PostPosted: Mon Sep 17, 2018 7:18 pm 
Gold Trader
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Joined: Fri Jan 23, 2009 2:30 pm
Posts: 14776
Location: Surrey
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?


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PostPosted: Mon Sep 17, 2018 8:54 pm 
MacRetro rider
MacRetro rider

Joined: Tue Mar 29, 2011 6:06 pm
Posts: 2370
Location: Roamin' in the gloamin'
https://www.superstarcomponents.com/en/ ... om-set.htm


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PostPosted: Mon Sep 17, 2018 8:59 pm 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider

Joined: Thu May 06, 2010 10:05 pm
Posts: 7519
Location: Aberdeen
clubby wrote:
https://www.superstarcomponents.com/en/uk-made-headset-bottom-set.htm


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


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PostPosted: Mon Sep 17, 2018 9:22 pm 
GOLD | PoTM | Rider | rBOTM
GOLD | PoTM | Rider | rBOTM
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Joined: Tue Feb 26, 2013 6:26 pm
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Location: 54 Festive Road Winchcombe GLOUCS Yarp...
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 ?


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 Post subject: Re:
PostPosted: Mon Sep 17, 2018 10:40 pm 
Gold Trader
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Joined: Fri Jan 23, 2009 2:30 pm
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Location: Surrey
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.


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PostPosted: Mon Sep 17, 2018 11:09 pm 
Gold Trader
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Joined: Fri Jan 23, 2009 2:30 pm
Posts: 14776
Location: Surrey
The History Man wrote:
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


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PostPosted: Tue Sep 18, 2018 5:26 pm 
GOLD | PoTM | Rider | rBOTM
GOLD | PoTM | Rider | rBOTM
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Joined: Tue Feb 26, 2013 6:26 pm
Posts: 22803
Location: 54 Festive Road Winchcombe GLOUCS Yarp...
mine is cup od 44 and bearing id 30.1 weird tange thing


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 Post subject: Re:
PostPosted: Tue Sep 18, 2018 7:04 pm 
Gold Trader
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Joined: Fri Jan 23, 2009 2:30 pm
Posts: 14776
Location: Surrey
No worries, thanks for looking.


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PostPosted: Tue Sep 18, 2018 10:06 pm 
Moderator /Lincs, E & S Yorks Deputy AEC
Moderator /Lincs, E & S Yorks Deputy AEC
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Joined: Mon Nov 26, 2007 6:16 pm
Posts: 4190
Location: RetroModding™ since 1988
Try kinetic bike bearings website

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


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 Post subject: Re:
PostPosted: Wed Sep 19, 2018 8:02 pm 
Devout Dirtbag
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Joined: Tue Sep 24, 2013 6:51 pm
Posts: 115
Try THESE


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