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PostPosted: Wed Feb 29, 2012 3:12 pm 
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Joined: Fri Dec 14, 2007 4:05 pm
Posts: 224
Hi,

I've been searching for a while but can't seem to find the exact specifcation of bearings for the the Mag 180 hub.

I'm looking to replace the bearings in the hub and the bike shop says there is one Tune specific bearing so I'm looking to see who stocks it..

Thanks in advance...


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Posted: Wed Feb 29, 2012 3:12 pm 


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PostPosted: Wed Feb 29, 2012 9:46 pm 
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Posts: 1842
Location: Melbourne, Australia
Check out the fairwheel forum for the hub comparison thread. Could be wrong but the 180 might still use the combined inner cassette bearings, and the DS bearing, in which case you'll only be able to get that from tune.

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PostPosted: Wed Feb 29, 2012 9:48 pm 
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This'll depend on where you are.

In Germany it would be Tune, in the US your LBS would want to contact [url]fairwheelbikes.com[/url], for other countries check here.

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PostPosted: Thu Mar 01, 2012 8:52 am 
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Joined: Sat Jul 10, 2004 5:37 pm
Posts: 1476
Location: France.
scotty wrote:
Hi,

I've been searching for a while but can't seem to find the exact specifcation of bearings for the the Mag 180 hub.

I'm looking to replace the bearings in the hub and the bike shop says there is one Tune specific bearing so I'm looking to see who stocks it..

Thanks in advance...


Tune Mag180 bearings are 6902-XOT-6802.

The 6902 is the non drive side bearing.
The XOT is the TUNE proprietary bearing. It is a 6902 merged with a 6802: there is a single internal race but two external races. The 6902 part is installed into the shell, while the 6802 part of the bearings fits into the freewheel.
The last 6802 bearing is the one pressed into the freewheel from the drive side.

You can see the exploded view of the Mag180 with the XOT proprietary bearing here:
Image

As information, this XOT bearing can be replaced with separated 6902 and 6802 bearings as long as the axle is alloy (not Mag160 nor Mag150), and as long as you put 0.3mm of washers between both bearings.

This is the exploded view of the Mag180 with the two separated bearings and the 0.3mm washer:
Image

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PostPosted: Thu Mar 01, 2012 2:48 pm 
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Joined: Fri Dec 14, 2007 4:05 pm
Posts: 224
Thanks Adrien,
I'm going to go for the two seperate bearing solution..
Cheers. :thumbup:


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