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 Post subject: removing SRAM BB cups
PostPosted: Tue Oct 23, 2012 9:47 pm 
Old School Grand Master
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Location: Herts UK
Bottom bracket is BB30 and I need to replace the bearings in the BB cups, failing that replace the BB cups.

The chainset is SRAM XX and despite googling, I have not been able to find a set of BB cups like the ones fitted, closest ones being these, but mine are more tapered at the ends:

Am I correct in saying that the cups are pressed in, no circlips or anything else involved - so what is best way to remove them?

Place a metal bar against the inside of the race and tap out with a hammer? Not sure that a puller would work as this would need to rest on the carbon BB.

Image


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 Post subject:
PostPosted: Tue Oct 23, 2012 10:50 pm 
Gold Trader / rb Rider / Special
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Got a picture?
There is specific tool for it which is essentially a headset removal tool, which is what we used to use.
The ones we used to coem across a lot had a circlip behind the bearing.


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 Post subject:
PostPosted: Wed Oct 24, 2012 9:34 am 
Old School Grand Master
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Will get photos up but I think I know the answer. These cups spin so that would imply they are adapters that fit into the bearing race so these ought to be drifted out followed by a second drifting out of the bearings themselves.


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 Post subject:
PostPosted: Wed Oct 24, 2012 7:55 pm 
Old School Grand Master
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a photo - it says something like focustech on the adapter - hopefully somebody will recognise it and confirm ^^^^.


Attachments:
adapter.jpg
adapter.jpg [ 42.54 KiB | Viewed 139 times ]
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 Post subject:
PostPosted: Wed Oct 24, 2012 9:22 pm 
Gold Trader / rb Rider / Special
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What you said sounds about right. Are they adapters to run normal cranks?


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 Post subject:
PostPosted: Wed Oct 24, 2012 9:50 pm 
Old School Grand Master
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Location: Herts UK
what is normal these days?

cranks are Sram XX GXP format (same diameter as shimano hollowtech II drive side but annoying slightly smaller on non drive side).


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 Post subject:
PostPosted: Wed Oct 24, 2012 9:57 pm 
Gold Trader / rb Rider / Special
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Location: Rurally close.
Yeah thats what i meant, standard hollowtech rather than 30mm axle.
KCNC do one of these which screws apart. Guess it is an adapter if thats the case.
Yours may just be like a reducer that are stuck in by rubber seals?


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