DIY Bearing Cup Press Tool for $5 (Press Fit Bottom Bracket) WITH PICS!!!- Mtbr.com
Results 1 to 10 of 10
  1. #1
    mtbr member
    Reputation: Poopshute's Avatar
    Join Date
    Mar 2010
    Posts
    577

    DIY Bearing Cup Press Tool for $5 (Press Fit Bottom Bracket) WITH PICS!!!

    Hey all. So I needed to change out my press fit BB. I read some posts about different options to press in a new BB using ParkTool's or a DIY method. Getting the bearing cups out needs a specialized tool that ParkTool sells for about $40. There was no getting around this tool as ParkTool pretty much has this figured out. They sell a couple press' as well. One being shop quality which is well over $100 and the other is an "economy" version for about $85. You can achieve the same results with a trip to your local hardware store and $5. See below on how...

    First off, since I'm changing out a Shimano BB91 BB, I purchased the ParkTool BB-90.3 bearing removal tool. It's about $40 and comes with a couple handy bushings. See picture below:


    Next, you'll head over to the hardware store and want to buy one each of the following:

    1.) One 5/8" x 6" bolt (make sure it has enough exposed thread. some bolts have little thread at the top which isn't ideal for this job)

    2.) Two 5/8" flat washers

    3.) One 5/8" nut

    Though it's not required, having the two bushings from the ParkTool BB-90.3 tool kit is quite handy. I needed the removal tool anyways so it was pretty cool for ParkTool to include the two bushings for installation as well.


    Here's the press assembled:


    And a couple of pics of how it looks like with a press fit bottom bracket in between:



    And how it looks like on the bike while pressing a BB in (you'll need to use a couple wrenches to do the work pressing the BB into the shell on the bike):



    Everything to make this tool cost $5 aside from the ParkTool bushings. You don't have to use the bushings but they do make the press a little more "stable" and easier to work with. You can use larger washers than the one's I used if you're not going to use the ParkTool bushings and achieve similar results. Honestly, with how well this DIY tool worked (and for how cheap), I don't understand why you would want to spend anymore on a "shop" version (unless of course you work in a bike shop).

    Hope this post helps save people a few bucks!
    Last edited by Poopshute; 07-17-2014 at 08:19 AM.

  2. #2
    mtbr member
    Reputation: Awshucks's Avatar
    Join Date
    Apr 2013
    Posts
    716

    Re: DIY Bearing Cup Press Tool for $5 (Press Fit Bottom Bracket) WITH PICS!!!

    Great post. Posts like these that make mtbr a great resource.

    Sent from my PC36100 using Tapatalk 2

  3. #3
    mtbr member
    Reputation: Poopshute's Avatar
    Join Date
    Mar 2010
    Posts
    577
    Quote Originally Posted by Awshucks View Post
    Great post. Posts like these that make mtbr a great resource.

    Sent from my PC36100 using Tapatalk 2
    No problem. I've seen plenty of threads where people explain how to make this tool but I don't think I've seen one with pictures. Pictures are always great to visually explain how things go together. Glad this is helping others.

  4. #4
    Evolutionsverlierer
    Reputation: acer66's Avatar
    Join Date
    Oct 2010
    Posts
    978
    Nicely done

  5. #5
    mtbr member
    Reputation: gmats's Avatar
    Join Date
    Apr 2005
    Posts
    3,218
    Aloha, nice job!!

  6. #6
    mtbr member
    Reputation: Mr Pig's Avatar
    Join Date
    Jun 2008
    Posts
    11,032
    Quote Originally Posted by Poopshute View Post
    Getting the bearing cups out needs a specialized tool that ParkTool sells for about $40. There was no getting around this tool as ParkTool pretty much has this figured out.
    Sorry but...not exactly! ;0)

    Go to your local bike shop and ask for an old aluminium seatpost, hopefully they'll have one kicking around. If not, try another shop until you get one.

    Cut off the seat clamp. Try to cut it reasonably straight.

    Use a hack-saw to cut four slots in the other end, just like the Park tool.

    Use anything handy to bend out the tabs you've just made and bingo, you have just made a free version of the Park BTT-90 :0)

    You can use any bit of threaded rod and large washers to replicate the bearing press. If the washers are too thin and bend just stack a bunch of them.

    I didn't know you got those bushes with the removal tool. Not like them! These days they seem to make you buy everything separately.

  7. #7
    mtbr member
    Reputation: Mr Pig's Avatar
    Join Date
    Jun 2008
    Posts
    11,032
    Oh, do check you get a seatpost that'll fit through your bearings ;0)

  8. #8
    mtbr member
    Reputation: Poopshute's Avatar
    Join Date
    Mar 2010
    Posts
    577
    Quote Originally Posted by Mr Pig View Post
    Sorry but...not exactly! ;0)

    Go to your local bike shop and ask for an old aluminium seatpost, hopefully they'll have one kicking around. If not, try another shop until you get one.

    Cut off the seat clamp. Try to cut it reasonably straight.

    Use a hack-saw to cut four slots in the other end, just like the Park tool.

    Use anything handy to bend out the tabs you've just made and bingo, you have just made a free version of the Park BTT-90 :0)

    You can use any bit of threaded rod and large washers to replicate the bearing press. If the washers are too thin and bend just stack a bunch of them.

    I didn't know you got those bushes with the removal tool. Not like them! These days they seem to make you buy everything separately.
    Quote Originally Posted by Mr Pig View Post
    Oh, do check you get a seatpost that'll fit through your bearings ;0)
    Yeah, you can definitely make your own... not sure a seat post would be the best option since they're usually pretty thick and would be a pain in the but to cut and bend out. Not to mention, there is the fitting through the bearing issue as you mentioned. Maybe some aluminum tubbing from the hardware store would be a better option? I guess the thing I like about the Park Tool is that the edges have been filed down and the insert portion is rounded so it makes placement pretty easy and doesn't completely destroy your cups if you have to remove them (had to remove my RWC cups as one of the spacers was installed on the wrong side). You also get those handy bushings with the Park Tool kit not that it's completely needed but it is a bonus.

    I'd say if you went off and made your own removal tool, you could get away with the whole setup for under $15 easily.

  9. #9
    mtbr member
    Reputation: Mr Pig's Avatar
    Join Date
    Jun 2008
    Posts
    11,032
    Quote Originally Posted by Poopshute View Post
    Maybe some aluminium tubing from the hardware store would be a better option?
    I think anything would work. I've only made one out of a seatpost but I can't see a reason why any bit of aluminium or copper tube would not work. Steel tube is too tough, I tried that. Aluminium seatpost is easy to cut and bend out but thick enough to be nice and springy and click firmly into place. It's probably pretty similar to the Park tool.

    The bottom end of a seatpost is perfectly flat and is also rounded off. If you used a bit of random tubing it would be easy to dress it similarly, as long as it's fairly flat it'll be ok.

    The best thing about buying the right tool though is pride of ownership. Park Tools just make you feel all fuzzy inside ;0) A couple of years ago I sold some really expensive Park facing and tapping tools. I never ever used them but it was still a bit of a wrench letting them go. Enjoy your removal tool, you'll never regret buying it.

  10. #10
    mtbr member
    Reputation:
    Join Date
    Dec 2006
    Posts
    154
    And another satisfied customer (me)! Thanks for the DIY tip.

Similar Threads

  1. Ibis Bearing Press Tool
    By SiO2 in forum Ibis
    Replies: 9
    Last Post: 07-08-2013, 06:35 AM
  2. Replies: 2
    Last Post: 05-02-2013, 09:46 AM
  3. Replaced bearing in press fit bottom bracket. Seal spins with crank. Normal?
    By cfrea in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 4
    Last Post: 01-05-2013, 09:20 AM
  4. Park Bottom Bracket Press-fit Tool - BBT 90
    By rideronthestorm in forum Tooltime
    Replies: 9
    Last Post: 12-20-2012, 09:16 AM
  5. Which bearing press tool kit?
    By crclawn in forum Tooltime
    Replies: 46
    Last Post: 12-01-2012, 11:28 AM

Members who have read this thread: 14

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 2020 VerticalScope Inc. All rights reserved.