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Need help with finding Crank Bearings

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Need help with finding Crank Bearings

Old 11-05-18, 08:57 PM
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DukeRyder
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Need help with finding Crank Bearings

Hi there vintage bike enthusiasts! Iím having a heck of a time finding crank bearings for this 1970s era Sears 3-Speed. Itís a ladies model made in Austria. The bearings are 1/4Ē balls and thereís 9 of them in the cage. Thereís plenty available that meet the 1/4Ēx9 criteria but theyíre way too small and other bearings sold for Sears 3 speeds are too big. I was hoping someone could give me a lead on a source for the bearings.



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Old 11-05-18, 08:59 PM
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An old school bike shop? I know mine has a lot of vintagey parts in boxes in the back. Donor from a yard sale?
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Old 11-05-18, 09:05 PM
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Also if anyone has a lead on a Tl3-S20 ballcup removal tool so I can fix the rear hub thatíd also be greatly appreciated.

The bike was my girlfriends grandmothers and sheís got sentimental attachment to it. It needs a little TLC so she can safely ride around with our 9mo old son

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Old 11-05-18, 09:17 PM
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I'm a little confused here. Are you saying that replacement cages are too small in diameter? If so, then just reuse the old cage and snap the new balls into it. Alternatively, dump the cage and just use loose balls. Stick them to the races with grease. If you use loose balls then you will probably use more than nine...just be sure to leave approximately the space of one ball...don't use too many balls by crowding them all together.
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Old 11-05-18, 09:20 PM
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HI,

just pull a single bearing from your retained bearing holder, clean it thoroughly, and use your caliper to accurately it. Count the number of nalls in the holder and doble it. take away 1 of them so that 2(x) -1 = number of loose bearings. Use the best waterproof grease you can, something like "red" bearing grease which is tenacious holding onto metal parts.

As far as the tool, do you have a local bicycle co-op?
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Old 11-05-18, 10:22 PM
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No, no, no. Fill the cup with 11 bearings, no added space. This is how half the bikes out there did it, and is perfect for the dimensions of the Steyr Cups and spindle.

You won't find an original bike out there that was factory assembled (intentionally) with one ball missing.

And same for the Steyr headsets, but where the original bearing cages had about 14 evenly-spaced balls instead of a much better "full compliment" of balls filling the races.
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Old 11-06-18, 03:06 AM
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Originally Posted by dddd View Post
No, no, no. Fill the cup with 11 bearings, no added space. This is how half the bikes out there did it, and is perfect for the dimensions of the Steyr Cups and spindle.
Itís not really ďmissingĒ one ball. The point is, you donít want to put in so many balls that they all rub against each other when they roll. There must be a bit of space between them when assembled properly.
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Old 11-06-18, 07:51 AM
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Whenever I have replaced the cage with loose balls, it was pretty obvious when I had the correct amount of balls. With the balls neatly lined up around the cup there will be a small space left that is too small to fit one more ball.
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Old 11-06-18, 12:00 PM
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Originally Posted by Pompiere View Post
Whenever I have replaced the cage with loose balls, it was pretty obvious when I had the correct amount of balls. With the balls neatly lined up around the cup there will be a small space left that is too small to fit one more ball.
+1 I like to pack the cup with grease, lay the bearings in, then take the spindle and give a spin or two. This assures that the bearings are seated properly and makes any gap pretty obvious.
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Old 11-06-18, 12:11 PM
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Originally Posted by dddd View Post
No, no, no. Fill the cup with 11 bearings, no added space. This is how half the bikes out there did it, and is perfect for the dimensions of the Steyr Cups and spindle.

You won't find an original bike out there that was factory assembled (intentionally) with one ball missing.

And same for the Steyr headsets, but where the original bearing cages had about 14 evenly-spaced balls instead of a much better "full compliment" of balls filling the races.
Yep. Loose bearings are the way to go. A little more hassle, but much better overall.
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Old 11-06-18, 09:34 PM
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Originally Posted by davester View Post
I'm a little confused here. Are you saying that replacement cages are too small in diameter? If so, then just reuse the old cage and snap the new balls into it. Alternatively, dump the cage and just use loose balls. Stick them to the races with grease. If you use loose balls then you will probably use more than nine...just be sure to leave approximately the space of one ball...don't use too many balls by crowding them all together.
i wish I could have reused the old cage (the pic is of the one good bearing). it was completely trashed! I thought about leaving them loose in there just pack with grease. If I canít find a suitable replacement thatíll be my course of action for sure.
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Old 11-06-18, 10:15 PM
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11 loose 1/4" balls on either side.
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Old 11-06-18, 10:57 PM
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Originally Posted by DukeRyder View Post


i wish I could have reused the old cage (the pic is of the one good bearing). it was completely trashed! I thought about leaving them loose in there just pack with grease. If I canít find a suitable replacement thatíll be my course of action for sure.
Ditch the bearing cage, additional ball bearings is far better.
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