BMW K bikes (Bricks)

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1Back to top Go down    diff crown wheel barings k100rs 86 on Sun Mar 29, 2009 7:44 am

ALEX PITON

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hi i am looking for a set of part numbers for the crown wheel barings on my k100rs 1986,
the ball baring and tapered roller baring are $181 and $101 from bmw a little over pricedi think. considering i can get the tapered roller wheel barings for a falcon for $35 + seals and split pins inc. am after ntk or skf type pls.
if i get no replyes ill post up the onles i match up threw the local baring places.
cheers

    

2Back to top Go down    Re: diff crown wheel barings k100rs 86 on Sun Mar 29, 2009 10:31 am

Crazy Frog

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Hello Alex

Here are the BMW reference and dimensions for the bearing:
Bevel gear:
33 12 2 310 925 (ax bearing 25 x 62 x 25.4)
33 12 1 236 995 (needle sleeve 15 x 30 x 18)

Crown gear:
33 12 242 210 (grooved ball bearing 85 x 120 x 18)
33 12 1 451 188 (tapered roller bearing 25 x 52 x 16.25)

If I recalled correctly, the big grooved bearing had been made specially for BMW but I think my brother had found a replacement.(I will call him tonight)

Your old bearing should be stamped with the manufacturer name and #. It is very difficult to see and may need a pair of reading glasses.
When you find this #, go to see an industrial bearing dealer, and he will be able to order it or cross reference with another manufacturer.
You have to be careful that they meet the same specs. A lot of cheap(made in China) bearings don't have the same amount of balls or rollers.
You should stay with brand names like INA,SKF, FAG.....

Bert

    

3Back to top Go down    Re: diff crown wheel barings k100rs 86 on Mon Mar 30, 2009 8:40 am

ALEX PITON

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the little crown wheel baing is a skf and the large a fag. i have movement in the rear wheel i am thinking ofjust replacing the small baring . the larger 1 is not verry notchey but the tip of the small rollers in the tapered baring are all deeply pitted,, any thoughts.

    

4Back to top Go down    Re: diff crown wheel barings k100rs 86 on Mon Mar 30, 2009 8:41 am

ALEX PITON

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i will prob only buy ntk or skf baring..
cheers and if get replacement baring sort it would be much appreciated

    

5Back to top Go down    Re: diff crown wheel barings k100rs 86 on Tue Mar 31, 2009 9:56 am

ALEX PITON

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well i got prices and he large cw baring is about 101 and the little 1 about 30... bit better than bmws 101 for the little one and 180 for the large

    

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