Originally Posted by
dabac
And you're not talking about the "cage" holding the balls?
It's not the mileage as such. It Depends on how well the bb is sealed, riding conditions etc.
My commuter sees 6000 miles/year. Has more than 30 000 miles on it by now.
Admittedly a cartridge unit of decent quality.
But 7500 miles as such is a survivable mileage.
Here's some background on the bike. I found it on the curb a little over ten years ago. The guy that had it didn't have a garage, and there was a little surface rust, so I think it was kept outside. There's no telling how many miles he put on it.
I want to put a good quality BB in there to replace it, here are the options so far based on a 118mm spindle:
Shimano UN55
https://www.vueltausa.com/components...113-118mm.html
Product Description | Origin8
Are any of these significantly better than the others, and how can you tell? As far as price, the Origin8 costs the most at around $36.
Below is a pic of the adjustable cup.
Dave