Bearings crankshaft / SKF

discussions specific to the 906 Paso
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duske
Posts: 22
Joined: Mon Jun 10, 2013 10:20 am
model: 906 Paso
year: 1987
Location: Denmark

Bearings crankshaft / SKF

Post by duske »

Hi.

I renovating my 906 engine with new crankshaft and bearings.

Anyone that has the SKF numbers for the bearings or maybe a link to where i can buy them (cheap.....)

Any hints regarding engine assembly is recieved with thanks. This is my first Ducati engine.... :wacko:

Ps. I have disassembled the engine and can see the the main crankshaft bearings are "well done". I think this has caused my rotor to split 2 times.
duske
Posts: 22
Joined: Mon Jun 10, 2013 10:20 am
model: 906 Paso
year: 1987
Location: Denmark

Re: Bearings crankshaft / SKF

Post by duske »

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Duc906
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Joined: Mon Mar 30, 2009 7:59 pm
model: 906 Paso
year: 1989
Location: Australia

Re: Bearings crankshaft / SKF

Post by Duc906 »

Hi duske, have a look here:
http://forums.ducatipaso.org/viewtopic.php?f=2&t=4369
I compiled this list when I rebuilt my motor, it had NTN main bearings but the numbers should be the same.
As sugested in that thread you should be able to get all these bearings through a local bearing supplier or google the bearing number and you should find what yor looking for. Good luck with you're engine rebuild. :thumbup:
duske
Posts: 22
Joined: Mon Jun 10, 2013 10:20 am
model: 906 Paso
year: 1987
Location: Denmark

Re: Bearings crankshaft / SKF

Post by duske »

Thanks for your mail.

I have seen the list and tried to find one of the bearings I needed from your list - like : 7307 X2TB (main bearing) but it is hard to find. Ebay doesn't give me any hit. I can find some hit but the price is &%¤¤#%

It is me ? I was just thinking that the bearing must have another SKF number or ?
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Duc906
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model: 906 Paso
year: 1989
Location: Australia

Re: Bearings crankshaft / SKF

Post by Duc906 »

I found a few on eBay. Try this listing 160927490294, it's in Germany.
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Duc906
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model: 906 Paso
year: 1989
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Re: Bearings crankshaft / SKF

Post by Duc906 »

Here is another supplier a bit cheaper http://www.thebearingshop.com/H1.htm
duske
Posts: 22
Joined: Mon Jun 10, 2013 10:20 am
model: 906 Paso
year: 1987
Location: Denmark

Re: Bearings crankshaft / SKF

Post by duske »

Yiarkkk - expensive.

I should have bought a new bike instead... :-)
Micpaso
Posts: 5
Joined: Sun Jan 05, 2014 4:30 pm
model: 906 Paso
year: 1990
Location: Denmark east

Re: Bearings crankshaft / SKF

Post by Micpaso »

Hej duske :lol: , you should try these guys they are very helpfull and normally fair prized
http://danskkuglelejecenter.eu/.
Where in Denmark are you from? I'am from 4070 Kirke Hyllinge
Hilsen Michael
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jcslocum
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year: 1988
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Re: Bearings crankshaft / SKF

Post by jcslocum »

duske
Posts: 22
Joined: Mon Jun 10, 2013 10:20 am
model: 906 Paso
year: 1987
Location: Denmark

Re: Bearings crankshaft / SKF

Post by duske »

thanks for the links. I will try them out....
duske
Posts: 22
Joined: Mon Jun 10, 2013 10:20 am
model: 906 Paso
year: 1987
Location: Denmark

Re: Bearings crankshaft / SKF

Post by duske »

Hi.

For info i found all the correct updated SKF number for the main bearings, and bought them at Simply Bearings.

The list is :

2 x SKF 6305C3 Open Deep Groove Ball Bearing 25x62x17mm
Option's £5.57 £11.14
1 x SKF 7207BEP Single Row Angular Contact Ball Bearing 35x72x17mm
Option's £24.62 £24.62
1 x SKF 7307BEP Single Row Angular Contact Ball Bearing 35x80x21mm
Option's £32.40 £32.40
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paso750
paso grand pooh-bah
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Joined: Sun Jul 18, 2004 12:00 am
model: 750 Paso
year: 1987
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Re: Bearings crankshaft / SKF

Post by paso750 »

There are topics on other Ducati forums about crankshaft bearings saying the ones used by Ducati were specially designed for them and that others like the ones from SKF didn`t have the identical design and wouldn`t withstand the forces the same way as the original ones. Some also reported about bearing failures when using others.
jayh
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Joined: Thu Oct 22, 2009 10:38 am
model: 750 Paso
year: 1986
Location: Mildura ,Australia

Re: Bearings crankshaft / SKF

Post by jayh »

The crankshaft bearings are not standard deep groove bearings.I think that they are called angular contact bearings from memory,but that is not important.

What is important is that they require preload,the same as a tapered roller bearing requires preload.

This is achieved with shims on the crankshaft AND the final thickness of your crankcase gasket will
effect this measurement as well.Not to mention correctly pressing new bearings into place.

Failure to do this operation correctly,will cause premature bearing failure.SKF bearings are a far less likely
culprit.

Reasearch this procedure and plan accordingly,you should be fine if you don't take short cuts.I know that
it is a pain in the ass, repeatedly bolting and unbolting the crankcase,but this is the difference between
a good and bad rebuild. J.
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Derek
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Re: Bearings crankshaft / SKF

Post by Derek »

1994 907ie
2017 Supersport 939
2015 Scrambler Classic
1982 Pantah 500SL (now sold)


Scotland
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