Remove BB30 bearings, pull or push?

munkster
munkster Posts: 819
edited August 2019 in Workshop
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

Comments

  • arlowood
    arlowood Posts: 2,561
    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
    gezebo Posts: 364
    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
    munkster Posts: 819
    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
    munkster Posts: 819
    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
    Ben6899 Posts: 9,686
    I'd buy a frame with a BSA BB shell, to be honest.
    Ben

    Bikes: Donhou DSS4 Custom | Condor Italia RC | Gios Megalite | Dolan Preffisio | Giant Bowery '76
    Instagram: https://www.instagram.com/ben_h_ppcc/
    Flickr: https://www.flickr.com/photos/143173475@N05/
  • munkster
    munkster Posts: 819
    I shall sell my new bike immediately ;-)
  • StillGoing
    StillGoing Posts: 5,211
    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
    I ride a bike. Doesn't make me green or a tree hugger. I drive a car too.
  • sungod
    sungod Posts: 16,517
    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)
    my bike - faster than god's and twice as shiny
  • munkster
    munkster Posts: 819
    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
    Alejandrosdog Posts: 1,975
    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
    Ben6899 Posts: 9,686
    munkster wrote:
    I shall sell my new bike immediately ;-)

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

    Bikes: Donhou DSS4 Custom | Condor Italia RC | Gios Megalite | Dolan Preffisio | Giant Bowery '76
    Instagram: https://www.instagram.com/ben_h_ppcc/
    Flickr: https://www.flickr.com/photos/143173475@N05/
  • dgunthor
    dgunthor Posts: 644
    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