How long do BB30 bearings last?

[bondirob]

One of my bearings is shot.
I bought the bike in April and have done less than 1000 miles on it.
I contacted the shop where I bought the bike to see if the warranty covered it and the mechanic said no its down to wear and tear. He also added that bb30 bearings need regular replacement.
I would have thought they'd last longer than that does anyone have any experience of these bearings?

 

[jay clock]

the 30 means minutes.....

 

[bondirob]

​

 

[mythste]

General consensus seems to be not long enough!

 

[jay clock]

press fit are a pain. Wheels Manufacturing do some replacements that are better it appears http://wheelsmfg.com/bottom-brackets.html Just got one on my bike so will see how it goes http://wheelsmfg.com/bottom-brackets.html

 

[bondirob]

press fit are a pain. Wheels Manufacturing do some replacements that are better it appears http://wheelsmfg.com/bottom-brackets.html Just got one on my bike so will see how it goes http://wheelsmfg.com/bottom-brackets.html

I might give that a go if I keep going through bearings

 

[swee'pea99]

Sounds like cobblers to me. I'd think any decent BB should be good for 5000+ miles, and SRAM have a good reputation.

 

[ianrauk]

Sounds like cobblers to me. I'd think any decent BB should be good for 5000+ miles, and SRAM have a good reputation.

Not BB30. Plenty of internet stories of all sorts of troubles. They designed something that simply does not work very well.

 

[fossyant]

The issues are down to alignment and it doesnt take much for them to be out being press fit rather than screwed in. This causes wear.

GXP and Hollow tech are better.

 

[Soltydog]

I didn't get much more than a 1000 miles out of mine, the replacement one seemed to last longer though

 

[uclown2002]

20K on my Boardman without replacement.

 

[bondirob]

[QUOTE 4520349, member: 45"]Not fit for purpose. Take it back.[/QUOTE]

I agree but I'll probably buy some good quality bearings rather than have them put some more cheaper ones in.
Besides they won't take responsibility anyway.

 

[lpretro1]

The bearings are not really the issue - it's down to the shell they are going in - BB30 shells they are never perfectly round causing uneven wear and hence creaking/clicking etc. You might get lucky and have one that will last for ages or maybe not

 

[Pale Rider]

Press or interference fit is fine for a Tupperware lid but it's always going to struggle in a high stress/low weight application such as a bicycle bottom bracket.

And the more times you knock it out and press in a new one, the more the thin-walled shell will wear.

If you are keeping the bike, I would look into changing to a screw fit bottom bracket.

Various options, of which Praxis is the best - according to Praxis.

https://www.praxiscycles.com/conversion-bb/

 

[Dogtrousers]

I had a SRAM GXP BB seize rock solid after not long. I cant remember how far, probs between 1,000 and 2,000 miles.

In my day .... cup and cone ... Jumpers for goalposts