Bicycle Mechanics - Are these hubs really disposable?
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08-04-10, 06:40 PM
On the 2001 Bianchi Daytona SL Aluminum bike I have, the hubs are Bianchi Levitation.
Are these hubs truly disposable?
I don't see anywhere that I could possibly get at the bearings.
The interior of the axle is round. The exterior also doesn't appear to have anywhere I could use a wrench, pliers, etc.
Are you really supposed to just throw these hubs away when they wear out?
08-04-10, 06:50 PM
looks like cartridge bearing hubs, the bearings are replaced as a unit and are pressed in/out
08-04-10, 07:18 PM
edit: looked at the picture again, not what I thought
looks like you can fit a 5 or 6mm allen key in there.
08-04-10, 07:40 PM
Edit: Well maybe not...thought they looked a lot like neuvation wheels.l (http://www.neuvationcycling.com/maintenance.html)
08-04-10, 09:39 PM
Doh! I used my Chimpanzee brain and was able to pull the end cap right off.
Is there a trick to getting the cartridge out. I tried prying with a utility knife but it seems pretty tight.
Assuming you can remove the axle, this is a typical cartridge bearing removal tool: http://www.jensonusa.com/store/product/TL401B32-Abi+Enduro+Cartridge+Bearing+Puller.aspx
Note, you should be able to see a number on the bearing, and that number probably corresponds to an Annular Bearing Engineering Committee number, see http://en.wikipedia.org/wiki/ABEC_scale. You can purchase this bearing at an industrial supply shop.
08-04-10, 10:59 PM
I'll leave you with this link to the Neuvation tech page, they might be Neuvation wheels after all. Not 100% sure though...
08-05-10, 05:07 PM
looks like you can knock the bearing out by striking the axle. new bearings can be pressed with various methods, i like the press from wheels mfg.
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