bearing cup replacement?

Discussion in 'Bicycle Repair' started by zippinaround, Aug 29, 2013.

  1. zippinaround

    zippinaround Active Member

    just trying to remove a bearing cup from the hub, i managed to get the undamaged one out easy enough but the damaged one just will not budge!
     
    Last edited: Aug 29, 2013

  2. grinningremlin

    grinningremlin Active Member

    Though I've never done it I found a technique on "Bike Forums".You heat up the hub (carefully) for a few seconds with a torch, then hammer out the cup with a "blind hole bearing puller".Three questions:
    How did you go about getting out the good one?
    Why pull out the good one?
    Where did you get replacement cups?
     
  3. zippinaround

    zippinaround Active Member

    That does sound like a good technique unfortunatly I don't have a torch . I just sprayed wd40 in the back of the cup left it overnight then tapped it out with an allen key. I was planning on replacing both rather than just one. Haven't got replacements yet but I thought a bike shop would sell them! If not I have an old buckled wheel I could use those.
     
  4. zippinaround

    zippinaround Active Member

    ok so i got the damaged one out but now i cant find replacements anywhere! is it possible to use a sealed bearing instead?
     
  5. zippinaround

    zippinaround Active Member

    i just want to replace the bearing cups or if i can just throw in cartridge bearings? the rest of the rim and spokes are fine.
     
  6. grinningremlin

    grinningremlin Active Member

    There's the problem, I looked into the same thing a while back, the way the industry is they expect the end user to buy a new hub or whole new wheel.There are NO real suppliers, not in the sense that you can buy everything else down to loose bearings.My plan was to pull the cups from an old hub and use those, but that doesn't mean they'll fit, there is no standard for cups outer diameter.I found one supplier in India, but if I remember correctly you'd have to buy a lot of cups.If we could get a group of buyers here I'd be willing to put a few bucks in for 6 or so cups for the future.New hub, pull some cups from a hub, or check with your LBS, they may have some loose.
     
  7. grinningremlin

    grinningremlin Active Member

    It's not that you CAN'T get them, it's that you probably have to buy 50,000 units.You need not replace the hub, cups can be pulled and reseated, find a hub on ebay of the same make as your hub, pull the cups and press/hammer them into your wheel, there's posts on "bike forums" detailing this process.
    I put in a price inquiry to a cup supplier in India just for fun,... we'll see.
     
  8. BigBlue

    BigBlue Active Member

    Here's a quote from Sheldon Brown, "Examine the cups (in the hub shell) in the same way. In most cases it is not possible to replace the cups without replacing the whole hub, but fortunately the cups usually are the last parts to wear out. If the hub is cleaned regularly, lubricated and kept in good adjustment, the cups should last indefinitely."

    Looks like your SOL on the hub cups.

    Chris
    AKA: BigBlue
     
  9. grinningremlin

    grinningremlin Active Member

    Not true, where there's a will,...
    He got one out, he needs a donor hub and some homemade tools as outlined in these posts.
    http://www.bikeforums.net/showthread.php/658886-Replacing-hub-races-101?highlight=101
    http://www.bikeforums.net/archive/index.php/t-729177.html
    It easier to buy a new wheel/hub, but you CAN replace the cups.
     
  10. BigBlue

    BigBlue Active Member

    O.K. , not all is lost on removing the cups.

    I found a post on the other forum. Links to the pictures were removed, but I found a decent copy with Google Images. http://motorbicycling.com/showthread.php?t=35368 The picture is worth a thousand words.

    HubConversion.jpg

    Chris
    AKA: BigBlue
     
    Last edited: Sep 1, 2013
  11. BigBlue

    BigBlue Active Member

    You've got me on that one. Removing and installing the cups are not the problems. It's locating quality replaceable cups. He still needs a donor hub or buy a used one for parts, but without examining it, you're taking chances.

    I agree it's easier to buy a new hub/wheel, but some people can't afford to or for whatever personal reasons like the challenge.

    Chris
    AKA: BigBlue
     
  12. grinningremlin

    grinningremlin Active Member

    Sublunacy, you sure do like being wrong A LOT, don't you?No pigs flying, facts in your face.I'd hate to be so stagnate in thinking as you.I'm sure the shops you worked at were full of superior snob "know it all's" who overcharged and laughed at those without your vast knowledge.As I said "YOU CAN BUY AND REPLACE CUPS" http://www.balcoindustries.com/bicycle-hub-cups.htm.
    Sublunacy, just because you think you know something doesn't make it true,... get it?
     
  13. zippinaround

    zippinaround Active Member

    thanks for all the help! the cups i'm looking for are 1 1/8". did you make an inquiry grinningremlin? i'd chip in a few dollars too if we can get a few more. big blue that is what i was thinking of doing just replace them with 1 1/8" cartridge bearings but my hub is coned so i cant fit any spacer in there! the centre is exactly the thickness of the axle could i still do it? and yes new stuff is out of the question cuz i'm super poor!
     
  14. BigBlue

    BigBlue Active Member

    Buying cups in volume won't solve your problem because their are probably dozens of different cups due to different style of hubs. Without a picture, I couldn't say yeh or nay if spacers would work. A straight hollow hub shell would work the best, as shown in post #12.

    Chris
    AKA: BigBlue
     
  15. zippinaround

    zippinaround Active Member

    thats true. what i'm saying is i cant fit any spacer in there! i'll put up a pic soon! do you know how the caged bearings work? do they run in a cup aswell or do they run on the cage?
     
  16. BigBlue

    BigBlue Active Member

    don't know about caged bearings:(

    Chris
    AKA: BigBlue
     
  17. zippinaround

    zippinaround Active Member

    a few pics

    just noticed while uploading these pics that my ruler only has 12 marks per inch so that cup is actually 1 1/12" ! the third pic i have a spacer in there but one end would just pressed against the narrowing hub.
     

    Attached Files:

  18. grinningremlin

    grinningremlin Active Member

    As I posted earlier (bike forums link), it can be done.His hub is pitted or damaged, he got one side out, a donor hub can be bought ebay style for $3 to $5 bucks.It's no different than the headset races.Pull the two cups, press them in, nothing to lose trying.Plus proving all the naysayers wrong.
     
  19. BigBlue

    BigBlue Active Member

    And what style hub does he have? Front, rear, bendix, 3 speed, drum, Shimano, coaster, Campy, BMX, SRAM, etc. - we don't know. OP states he's going to get a picture.

    As I stated earlier, every hub is different - hub cups aren't universal. On some hubs, the cups aren't removable.

    I looked on Ebay, there ain't too many hubs for $3 to $5. OP is in the UK and shipping and customs would be prohibitive to ship from the US to the UK. I looked on UK Ebay and are very few inexpensive hubs.

    Sure it is different than headset races. Hub cups come in different sizes where as headsets come in basically 2 sizes.

    If he had a used bicycle parts supplier nearby or scrounge a flea market/swap meet, he might find a hub that matches his at a reasonable price.

    I am not trying to prove anything other than trying to get the facts right and keep it in context relating to the OP. As stated by the OP, he doesn't have much money.

    Chris
    AKA: BigBlue
     
  20. zippinaround

    zippinaround Active Member

    the pics of my hub are in post #20 and no its not steel nor is it a steel wheel! this is a rear hub not sure what make but i think its falcon and at this stage i have both cups removed! i'm just gonna try get 2 cartridge bearings with the same OD as the good cup i have and put a spacer between the hub and centre race of the bearings hope for the best!
     
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