Results 1 to 25 of 25
  1. #1
    mtbr member
    Reputation:
    Join Date
    Jun 2017
    Posts
    16

    Press fit bottom bracket tool?

    OK. I'm going to buy one of these. Just because I don't want to destroy the bottom bracket getting it out.

    Is there a universal tool? Or do I need a specific size.

    Looks like mine is a Shimano BB71-41.

    Thanks for any help!

    Joel in Asheville.

  2. #2
    mtbr member
    Reputation: Mr Pig's Avatar
    Join Date
    Jun 2008
    Posts
    10,523
    My bike has one of those. I have no idea how the heck you get it out! Thanks to you, I'm about to find out though ;0)

  3. #3
    mtbr member
    Reputation: rx4mtb's Avatar
    Join Date
    Jul 2012
    Posts
    161

    Press fit bottom bracket tool?

    Look at the Enduro tool, it's pricy but does really good job.
    What BB will you be replacing it with?
    Last edited by rx4mtb; 10-01-2017 at 05:50 AM.

  4. #4
    mtbr member
    Reputation:
    Join Date
    Apr 2016
    Posts
    432
    I made a tool to press in headsets and used it last week to press in bottom bracket bearings on an old Fat Chance mountain bike. Under $20 in parts

    Sent from my SM-N920V using Tapatalk

  5. #5
    mtbr member
    Reputation: ethierjung's Avatar
    Join Date
    May 2017
    Posts
    149
    2015 Scalpel Carbon Team/Eagle 1x12
    2015 Scalpel Carbon Team #2
    2017 Stache 7
    2016 Boone RSL
    2016 CAAD 12

  6. #6
    mtbr member
    Reputation:
    Join Date
    Apr 2013
    Posts
    160
    I've been happy with the few bits I bought from ebay seller MTB Tools. They are basically nice versions of what a handy person would make at home, but they are priced very reasonably. The various machined bushings I have from him all fit as described.

    Press for BB92, 24mm spindles: MTB Tools BB24 Bottom Bracket Bearing Installation Press Tool | eBay

    Nothing fancy, but the price is right.

  7. #7
    mtbr member
    Reputation: Mr Pig's Avatar
    Join Date
    Jun 2008
    Posts
    10,523
    Yes yes yes but how do you get the thing out?

  8. #8
    mtbr member
    Reputation:
    Join Date
    Apr 2013
    Posts
    160
    Quote Originally Posted by Mr Pig View Post
    Yes yes yes but how do you get the thing out?
    A bearing removal tool like this works well: IceToolz E293 Press-fit Bearing Removal Tool BB bottom bracket bicycle bike B.B. | eBay

    You slide it in until the prongs pop out behind the bearing, then tap the bearing out with a dead-blow hammer.

    The other style is a slide hammer like this: Park Tool BBT 30.3 BOTTOM BRACKET BEARING TOOL Remove BB30 SRAM Press Fit 30 | eBay

    But I've had better luck with the "pronged" removal tools. You can also DIY it by using a sturdy drift to tap on the inside of the bearing, coming in through the opposite side. The problem is that you can't put force on the whole bearing at once, and you don't want to bind the bearing by pushing it out all from one side, so you have to tap, move to another spot, tap, move, tap, move, tap, etc., being very patient.

    Also, with anything pressfit you need to keep a bag of tricks handy for when things get tough - you can use dry-ice to cool the internal bearing to shrink it, you can use boiling water to heat the outer shell to expand it, you can use a dremel with a cutting wheel to put a "crack" in a tight bearing to break it and allow it to be pulled out, etc.

    I have a freezer in my shop (for popsicles), and whenever I'm pressing a new bearing into something I leave it in the freezer for a few minutes to cool it down - it can make the difference between a bastard of a tight fit, and and simple pressing action.

  9. #9
    mtbr member
    Reputation: Mr Pig's Avatar
    Join Date
    Jun 2008
    Posts
    10,523
    Quote Originally Posted by phidauex View Post
    You slide it in until the prongs pop out behind the bearing, then tap the bearing out with a dead-blow hammer.
    So there is no sleeve in there covering the inside of the bearings? I would've thought some kind of spacer tube would be needed in there?

  10. #10
    since 4/10/2009
    Reputation: Harold's Avatar
    Join Date
    Dec 2003
    Posts
    24,716
    Quote Originally Posted by Mr Pig View Post
    So there is no sleeve in there covering the inside of the bearings? I would've thought some kind of spacer tube would be needed in there?
    There's still a lip of some sort in there. It's the same tool you use to remove headset cups, so that's helpful.

    I bought one of these for installation.

    Professional Bottom Bracket Universal Press

    It's a really nice tool for the job.

  11. #11
    mtbr member
    Reputation: Mr Pig's Avatar
    Join Date
    Jun 2008
    Posts
    10,523
    Quote Originally Posted by Harold View Post
    It's the same tool you use to remove headset cups, so that's helpful.
    Spiffing. I have one of those.

  12. #12
    since 4/10/2009
    Reputation: Harold's Avatar
    Join Date
    Dec 2003
    Posts
    24,716
    Quote Originally Posted by Mr Pig View Post
    Spiffing. I have one of those.
    Gotta check the size you have. There are at least 2 sizes (Park has 2). The bottom cup on tapered headsets takes the bigger size, which iirc isn't much good for most bbs.

    Sent from my SM-G900V using Tapatalk

  13. #13
    mtbr member
    Reputation: Mr Pig's Avatar
    Join Date
    Jun 2008
    Posts
    10,523
    Quote Originally Posted by Harold View Post
    Gotta check the size you have.
    Mine is home-made. Old alloy seatpost with slots cut. Works, cost nothing ;0)

  14. #14
    since 4/10/2009
    Reputation: Harold's Avatar
    Join Date
    Dec 2003
    Posts
    24,716
    Quote Originally Posted by Mr Pig View Post
    Mine is home-made. Old alloy seatpost with slots cut. Works, cost nothing ;0)
    still need to make sure it's the right size for the bb you want to hammer out. needs to be small enough that it fits through the ID of the bearing/spindle hole and it needs to expand enough that it will snap into place on the largest diameter tube you'll be using it against (basically, the inside of the bb shell).

  15. #15
    mtbr member
    Reputation: Mr Pig's Avatar
    Join Date
    Jun 2008
    Posts
    10,523
    Quote Originally Posted by Harold View Post
    still need to make sure it's the right size for the bb you want to hammer out.
    Yeah, if it doesn't I'll just make another one. Dead simple.

  16. #16
    mtbr member
    Reputation: ethierjung's Avatar
    Join Date
    May 2017
    Posts
    149
    2015 Scalpel Carbon Team/Eagle 1x12
    2015 Scalpel Carbon Team #2
    2017 Stache 7
    2016 Boone RSL
    2016 CAAD 12

  17. #17
    mtbr member
    Reputation:
    Join Date
    Jan 2004
    Posts
    1,185
    To get it out assuming it's going to be completely replaced, a wooden dowel smaller in daiameter than the crank axle spindle & a rubber mallet.... start hammering. I knocked mine out with a large screwdriver making sure not to hit any metal.

    Pressed the new one in with a headset press. Works like a charm.

  18. #18
    since 4/10/2009
    Reputation: Harold's Avatar
    Join Date
    Dec 2003
    Posts
    24,716
    Quote Originally Posted by eshew View Post
    To get it out assuming it's going to be completely replaced, a wooden dowel smaller in daiameter than the crank axle spindle & a rubber mallet.... start hammering. I knocked mine out with a large screwdriver making sure not to hit any metal.

    Pressed the new one in with a headset press. Works like a charm.
    Probably better to get it out as straight as possible. Your way seems a great way to damage the bb shell of your frame doing it that way often. I know ppl who have scrapped frames with pf shells because replacing bbs frequently (and probably sloppily) eventually makes them fit loose.

    Sent from my SM-G900V using Tapatalk

  19. #19
    mtbr member
    Reputation: ethierjung's Avatar
    Join Date
    May 2017
    Posts
    149
    2015 Scalpel Carbon Team/Eagle 1x12
    2015 Scalpel Carbon Team #2
    2017 Stache 7
    2016 Boone RSL
    2016 CAAD 12

  20. #20
    mtbr member
    Reputation: Mr Pig's Avatar
    Join Date
    Jun 2008
    Posts
    10,523
    Quote Originally Posted by Harold View Post
    Your way seems a great way to damage the bb shell of your frame doing it that way often.
    Yeah, I've taken bearings out that way very often but it's risky, especially on an alloy frame. Don't get me wrong, I would do it that way if I had to but I've had years of practice. Any method that pushes the bearing out straight has to be preferable.

  21. #21
    mtbr member
    Reputation:
    Join Date
    Jan 2004
    Posts
    1,185
    Quote Originally Posted by Harold View Post
    Probably better to get it out as straight as possible. Your way seems a great way to damage the bb shell of your frame doing it that way often. I know ppl who have scrapped frames with pf shells because replacing bbs frequently (and probably sloppily) eventually makes them fit loose.

    Sent from my SM-G900V using Tapatalk
    Really?! Yikes I guess I'll try and get a bit more sophisticated next time. I was in the process of completely rebuilding a process 153 and assumed my headset tools would work (to big), didn't want to lose any momentum so the screw drivers... Wonder if a bit of old handle bar could work next time...

  22. #22
    mtbr member
    Reputation: LarryFahn's Avatar
    Join Date
    Jul 2005
    Posts
    2,101
    Quote Originally Posted by phidauex View Post
    Just a heads up, but this isn't a slide hammer either. It still requires a hammer to drive it out. The blue washer on it goes into the opposing side to align the tool so you hit it straight on and don't cause the BB to get crooked.

    Fwiw, it comes with 2 "washers" that are compatible with a headset press. These are used to install an identical BB.

    Ttyl, Fahn
    Hubbard Bike Club

  23. #23
    mtbr member
    Reputation:
    Join Date
    Oct 2015
    Posts
    87
    The Park tool BBT90.3 is nice but overpriced ($50 or so).
    Press fit bottom bracket tool?-parkbbt903.jpg

    The Taiwan equivalent is similar and more reasonably priced ($20 on eBay) - Icetoolz E293.
    Name:  icetoolze293.JPG
Views: 810
Size:  10.7 KB

    Get a 1/2" piece of PVC pipe, four cuts, bend out, and you are done under $1.

    Name:  ghettobbremover.JPG
Views: 968
Size:  18.7 KB
    Never limited by common sense...

  24. #24
    mtbr member
    Reputation: Lone Rager's Avatar
    Join Date
    Dec 2013
    Posts
    5,080
    FWIW: Pressing on the unsupported race when installing or removing pressed in/on cartridge bearings is usually considered damaging to the bearing.
    Do the math.

  25. #25
    mtbr member
    Reputation:
    Join Date
    Oct 2015
    Posts
    87
    All these tools do the same thing, they press the fiber sleeve from the inside, I am not sure if any force passes through the bearings pressed in the sleeve, would have to dismantle one to check.

    These BB71 or BB94 Shimano bottom brackets are $20 and $30, so it is rare that anyone would remove and reinstall the same one. The tools main advantage, when compared to the real brute force of hammer and screwdriver, is to eliminate any risk of marring the frame. In that aspect, the $1 PVC one is the best choice, even if you misuse it, it is softer than the frame.
    Never limited by common sense...

Similar Threads

  1. DIY Bearing Cup Press Tool for $5 (Press Fit Bottom Bracket) WITH PICS!!!
    By Poopshute in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 9
    Last Post: 05-20-2017, 10:01 AM
  2. Replies: 4
    Last Post: 11-16-2015, 10:49 AM
  3. Park Bottom Bracket Press-fit Tool - BBT 90
    By rideronthestorm in forum Tooltime
    Replies: 9
    Last Post: 12-20-2012, 09:16 AM
  4. Shimano press fit BB92 and GXP press fit BB92 the same?
    By Stryder75 in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 2
    Last Post: 05-10-2011, 04:28 PM
  5. Press fit Bottom Bracket.
    By mudpup in forum Pivot Cycles
    Replies: 5
    Last Post: 04-01-2011, 10:37 AM

Members who have read this thread: 45

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

THE SITE

ABOUT MTBR

VISIT US AT

© Copyright 2019 VerticalScope Inc. All rights reserved.