External Bearing Bottom Brackets - How long before the bearing need replacing

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What splines are you referring to? I'm new to BB maintenance and replacement (replaced my first Shimano HT-II BB only a few weeks ago), so I'd like to know about any possible source of annoying noises.
Where the non-drive crank arm mates with the drive-side part. Grease well. That and the pedal threads seem to be the most likely source of noises if the bearings are ok.
 

Shut Up Legs

Down Under Member
What splines are you referring to? I'm new to BB maintenance and replacement (replaced my first Shimano HT-II BB only a few weeks ago), so I'd like to know about any possible source of annoying noises.
Where the non-drive crank arm mates with the drive-side part. Grease well. That and the pedal threads seem to be the most likely source of noises if the bearings are ok.
Ah, got it :smile: . Yes, I used ample grease when I installed the BB recently (even some elbow-grease :laugh:).
 

GilesM

Legendary Member
Location
East Lothian
My Full suss has the Hope Ceramic one, been in for about three years now, usually used atleast once a week, all year round in lovely Scottish weather, and lots of mud and grit from the trails, it's still perfectly smooth.
Hardtail has a Hope Stainless one, fitted three years ago to my hard tail, after 18 months in my full suss bike, normally used twice a week, whatever the weather, still running smooth, however both bikes once had Race Face BB, they lasted about 6 weeks of off road Scotland, which is a bit odd as I really like the Race Face chainsets, and they seem to be really good quality. I bought some spare bearing and tools to replace the Hope bearings, but I've not yet needed them.
 
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