Remove BB30 bearings, pull or push?

munkster

What is the general consensus about removal of BB30 bearings? Is it better to have a removal tool that you whack and push the bearings out or are pullers better? Obviously the latter are less of a shock but I am wondering whether whatever needs to make purchase on your BB shell is likely to damage the frame in some way?

Specifically talking BB30 here not PF30, BB30A in fact but that's not a big distinction in this particular Q I don't think!

ta

arlowood

munkster wrote:

What is the general consensus about removal of BB30 bearings? Is it better to have a removal tool that you whack and push the bearings out or are pullers better? Obviously the latter are less of a shock but I am wondering whether whatever needs to make purchase on your BB shell is likely to damage the frame in some way?

Specifically talking BB30 here not PF30, BB30A in fact but that's not a big distinction in this particular Q I don't think!

ta

Park Tools favour the "push" option and have a relatively cheap tool for the purpose

https://www.wiggle.co.uk/park-tool-bott ... 7YQAvD_BwE

their tutorial on the use of the tool is here:-

https://www.parktool.com/blog/repair-he ... rvice-bb30

But you can get bearing pullers for a similar price to the Park incarnation

https://www.tredz.co.uk/.Unior-Tool-For ... tcQAvD_BwE

gezebo

Just tap them out. If you google there are a couple of tools available for this which are much cheaper than the park tool et al ones

munkster

Yep, I am very familiar with the tools, I just haven't put myself through the anguish of BB30 ownership for a long time (I've been using WheelsMfg adapters but thought I'd give it a try for once) just wondered which one people favoured.

Done plenty of Googling, even cheaper options here, look good:

Press: https://www.bearingprotools.com/collect ... -with-nuts
Puller: https://www.bearingprotools.com/collect ... ing-puller

munkster

So, on the subject of the puller is there any risk that the cup that provides the resistance against the frame (presumably the BB shell??) can cause any damage? That's my only concern about it, I think I prefer that method since it seems more controlled, it'll be getting used on an alu CAAD12 frame... cheers!

Ben6899

I'd buy a frame with a BSA BB shell, to be honest.

munkster

I shall sell my new bike immediately ;-)

StillGoing

munkster wrote:

So, on the subject of the puller is there any risk that the cup that provides the resistance against the frame (presumably the BB shell??) can cause any damage? That's my only concern about it, I think I prefer that method since it seems more controlled, it'll be getting used on an alu CAAD12 frame... cheers!

Have tried both methods and don't rate the pull method. Better to push out using one of these

https://www.wiggle.co.uk/park-tool-pres ... b0QAvD_BwE

sungod

my frame is bb30, c. 10 years all weathers no issue, it's not bb30 that's the problem, it's poor implementation of bb30

gently tap out, does not need a lot of force, main thing is to keep the bearing straight, clean, grease, press in new

with an alu frame you could heat the bb shell, differential expansion of alu vs. steel will make the bearings looser

fwiw cannondale don't have a good reputation for the quality of their bb30 shells, but you can use retaining compound if you get any creaking (loctite 641 with 7649 primer, done correctly it'll be a strong bond which really needs heat to weaken and remove bearings without a lot of force)

munkster

Thanks for those two useful replies. I can see this all ending in tears and me giving in and just installing another WheelsMfg screw-together BB to be fair, but want to give BB30 a chance for a bit at least. The Hollowgram chainset is pretty, apart from anything else ;-)

Alejandrosdog

munkster wrote:

Thanks for those two useful replies. I can see this all ending in tears and me giving in and just installing another WheelsMfg screw-together BB to be fair, but want to give BB30 a chance for a bit at least. The Hollowgram chainset is pretty, apart from anything else ;-)

Checkout the wheels bb kit, pullers and a really good press. The HollowGram is indeed a work of art

Ben6899

munkster wrote:

I shall sell my new bike immediately ;-)

I misread - didn't think you'd already bought it.

dgunthor

Hi, I sell a couple of pullers - the best one is £24.99 and removes in 5 seconds. The cheaper one you need to use a socket tool but is half the price. Prefer the pull method personally:
https://www.ebay.co.uk/usr/bicycle_service_centre