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ducatipaso.org :: View topic - Steering Stem Bearings
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Steering Stem Bearings
http://www.ducatipaso.org/forum/viewtopic.php?f=1&t=1579
Page 1 of 3

Author:  Desmo_Demon [ Wed Jan 24, 2007 4:17 pm ]
Post subject:  Steering Stem Bearings

I'm in the process of changing out the steering stem bearings on my '87 Paso and wanted to share the info that I ran across.

What appears to be the original bearings on my bike are taper-roller bearings of SKF manufacture. The bearings are an odd-size and don't cross reference with much of anything else, and I've found them to range in price from $16-$25 USD each.


Bearing - SKF #32005-X/Q
Measurements - 25mm id x 47mm od x 15mm width


I just wanted to share this info to try save others from having to do the research. :D

Author:  Garnet [ Wed Jan 24, 2007 8:48 pm ]
Post subject: 

I just checked my current SKF price list (Canada) and 32005-XVB is the current number for that size. It seems to be readily available and price is around 25-32 $CDN.
Good Luck
Garnet

Author:  Desmo_Demon [ Wed Jan 24, 2007 9:04 pm ]
Post subject: 


Author:  Desmo_Demon [ Mon Jan 29, 2007 7:57 pm ]
Post subject: 

I went to assemble the front end on my Paso, and not suprisingly, I realized that the previous owner didn't put it together correctly. :eek:

There is a seal in the top and bottom of the steering head, and neither seal was there (seal is part #937817081). Turns out that seal is obsolete, now. Here is the size of that seal...

45mm ID x 52mm OD x 2mm thick

I've been calling a lot of the Ducati dealers in the USA, have a guy checking with a dealer or two in Italy for me, and I've contacted a huge dealer in Australia and am awaiting a response. The closest I can find anywhere else is a 45x52x7. Anyone know where I can get this seal? I need two of them.


More data:

Note - There is a "distance piece" (part #037037020) which is a spacer and has a groove in the ID for an o-ring. This o-ring (part #46320046A) is also obsolete. Fortunately, it is a fairly standard metric o-ring and can be found in many places. I believe the measurements for this o-ring are 2mm thick with an ID of 24mm. I found them available through McMaster-Carr.

Author:  Garnet [ Tue Jan 30, 2007 4:09 pm ]
Post subject: 

CR seals (SKF) list a 45 x 52 x 4 as part # 17692. A bit closer....

Author:  Desmo_Demon [ Tue Jan 30, 2007 5:53 pm ]
Post subject: 


Author:  Desmo_Demon [ Mon Feb 05, 2007 6:55 pm ]
Post subject: 

I found a 45mm id x 52mm od x 4mm thickness seal through...

http://www.metric-seals.com/

They are a little under $7 each, so I'm going to try these. I think the recession in the steering head is right at 4mm, so, if the lip of the seal aligns with the distance piece (spacer) correctly, I will be able to use that....and put this front end back together! :D

Author:  Desmo_Demon [ Thu Feb 08, 2007 2:15 pm ]
Post subject: 

I got the seals in yesterday. The lip in the steering head where they are installed is 4mm deep and the seal's lip is low in the seal, so they worked wonderfully. I have the bearings and races, seals, and the lower triple with stem now installed on the bike. All I need, now, is some time to put the rest of the front end together.

The seal on http://www.metric-seals.com is listed as part #S 45 X 52 X 4 WAO. They cost me $6.90 each and a whopping $8 in shipping via UPS in the USA. I hope this helps someone in the future. :cool:

Author:  lceriani [ Mon Apr 23, 2007 9:33 pm ]
Post subject: 

I am in trouble with steering bearings, too... I disassembled mine, but I cannot recognize the manual scheme.

I found that the whole assembly should be like this:



Where:
2: #036191020 = washer
3: #762604606 = bearing (SKF #32005-X/Q)
4: #037037020 = distance piece
5: #937817081 = junk ring
6: #037037030 = ring nut
7: #707006020 = screw
8: #46320346A = O-Ring

I read that:
- bearing (3) should be SKF #32005-X/Q (X=ISO dimensions, Q=special geometry)
- the distance piece (4) has a inner groove for O-R (8), that should be a standard and easy replaceable component
- the "junk ring" (5), that you call "seal", seems difficult to find, but you replaced it with a 45mm id x 52mm od x 4mm

So my questions:

- is the bearing a unique component or can it be split in two pieces? is that the SKF bearing you used?
I only could extract the "cage" with rollers, but not its "seat" (the external part), that seems very stuck. Is this correct? Should I force and push the blocked seat with a tool to remove it or could I re-use it again?



- what about the washer (2)? I cannot see if I have washer because I cannot fully remove the bearing, but in case they are missing, do you know their dimensions?

- does the seal you bought perfectly fit?

Thanks!
LC

Author:  paso750 [ Mon Apr 23, 2007 9:57 pm ]
Post subject: 


Author:  ducapaso [ Mon Apr 23, 2007 10:14 pm ]
Post subject: 

Anyway, they sell the entire bearing, so, you'd surely bettter taking away the external ring :thumbup:

Author:  lceriani [ Tue Apr 24, 2007 2:33 pm ]
Post subject: 


Author:  paso750 [ Tue Apr 24, 2007 2:48 pm ]
Post subject: 


Author:  Desmo_Demon [ Tue Apr 24, 2007 3:18 pm ]
Post subject: 


Author:  paso750 [ Tue Apr 24, 2007 7:05 pm ]
Post subject: 


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