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Old 12-07-2009, 11:16 PM   #76
bmwktmbill
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Tseta,
I agree, lots of factors influence wear. We have to add running the chain too tight. That's hell on everything including wheels.
bill
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Old 12-08-2009, 12:48 PM   #77
warewolf
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Quote:
Originally Posted by Tseta
First, the bearings for both setups are commonly available from industrial bearing suppliers. No need to pay the KTM prices.
Maybe so, but from my bearing supplier the double-row angular contact bearing is still 5 times the price of a normal deep-groove ball bearing.

Given the issue with contamination, I would venture to suggest there is no marked difference in life or performance, merely price. The accountants have finally won!
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Old 03-05-2012, 03:58 PM   #78
Ohffs
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So what's the cheap alternative (off the shelf) bearing that will fit? I don't mind keeping an eye on it or even replacing fairly regularly. This is mine



Also my Cush drive rubbers look worn. Is there a pattern part replacement or is it a ktm visit?
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Old 03-05-2012, 10:52 PM   #79
Tseta
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Ohffs: You seem to have the "older" cush drive setup and as such, are going to be looking for a 3205-B-2RSR double row angular contact bearing. The nomenclature may be a bit different with each bearing manufacturer, but the important part obviously is to get a bearing in the correct size (25x52x20.6) and design (double-row, angular contact, sealed from both sides).

The cush drive damping rubbers (#54610459000), at least to my knowledge, are only available through KTM.

Cheers,

Tseta
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Old 03-07-2012, 05:29 AM   #80
Ohffs
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Thanks for the reply. Are the Cush rubbers different from each sprocket carrier types different?
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Old 03-07-2012, 06:02 AM   #81
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No, they are the same for all the sprocket carriers. In fact, it seems that they've been the same ever since model year 1991...

-T
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Old 03-07-2012, 06:03 AM   #82
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Thought tooled the same. Thanks for the rapid reply
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Old 03-08-2012, 08:51 AM   #83
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Picked up a 6205 2rs today just to confirm its no good. 5.6mm too shallow.

Hoping this will do it

http://simplybearings.co.uk/shop/adv...ywords=32052rs
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Old 03-08-2012, 09:35 AM   #84
Ohffs
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Can we confirm that (25x52x20.6) is the correct size before I order. I don't have anything to measure my old bearing accurately enough.
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Old 03-09-2012, 12:06 AM   #85
bmwktmbill
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Quote:
Originally Posted by Ohffs View Post
Can we confirm that (25x52x20.6) is the correct size before I order. I don't have anything to measure my old bearing accurately enough.
It is late but this is what I see with a cheap plastic caliper

I have an OEM bearing new.
I am seeing 25X52X20.6 so not quite 21mm for thickness?

KTM pt# 0625032057
ball bearing 3205B-2RSTNG.

bill
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'02 KTM 640 Adventure-lowered
"On the road there are no special cases."
Cormack McCarthy-The Crossing

The faster it goes the faster it breaks.
And high performance=high maintenance.
Bill Shockley

bmwktmbill screwed with this post 03-09-2012 at 12:12 AM
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Old 03-09-2012, 12:17 AM   #86
Ohffs
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Not late at all mate thanks for taking the time to measure it for me .
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Old 03-09-2012, 09:41 AM   #87
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Let us know how that goes

Noticed mine was rough last tire change.
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Old 03-09-2012, 09:43 AM   #88
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Will do. Rang a local firm who can source one at 35 plus vat but obviously of be able to collect it. Failing that simply bearings stock it a bit cheaper. Il get it within a week and update.
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Old 10-24-2012, 01:08 PM   #89
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any more inputs and feedbacks?


thanks.
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Old 10-24-2012, 01:11 PM   #90
Ohffs
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not really. I ordered the bearing from simply bearings and all has been well since
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