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  1. #1
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    What crank bearings do I need?

    This is my crank specs I found online.

    Prowheel Alloy 335P6 28X38X48 170mm



    I have the denali road bike and after
    1600 miles the crank bearings are going out.

    I want to order new bearings now to have them ready when the old ones get to loose to use.

    Can anyone here tell what bearings I need? I dont have a lot of knowledge with bike parts. Thanks.

  2. #2
    coprolite fietsbob's Avatar
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    Cannot say without being there .. You got the Bucks to buy a whole new crankset and it's BB as a package deal?

    take what you have out... with the tools you bought for that purpose..

    and Measure it's over all length , If its Square taper type ,
    there may be a cartridge UN type BB that is similar,

    But As I am guessing blind , I have made a shot in the dark.


    I dont have a lot of knowledge with bike parts.
    bike shops do.. have any ?, they are equipped to do the work and see what you have, ..

    I've Never had to work on those Wally World type bikes , (every part chosen for lowest cost)
    Last edited by fietsbob; 01-19-14 at 09:58 AM.

  3. #3
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    Yea, im trying to keep this a cheap diy job. And I didnt want to remove the crank before I had to.

    I was going to order the little tools and bearings at the same time just to have them when that time comes. I didnt want to make a thing of it. this bike is just to tie me over until I get a better bike.

  4. #4
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    never mind i think i found the answer from a youtube video. guy was changing his old crank and i seen it had 9 bb's in the bearing case.

    seen some on amazon for a few bucks. one of the reviews mentioned the size and it matches up to my crank tube. I'm taking a shot for a few bucks. beats paying to shops and hassle of taking the bike there.

  5. #5
    Senior Member Bill Kapaun's Avatar
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    A typical old style BB takes 11 1/4" balls per side.
    Some cheaper ones used retainer bearings with 9 balls.
    A bit of shopping and I think you can find 11 ball retainers.

    Most of us don't use the retainer. Fresh grease holds the new balls in place.

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