How to replace bearings in sprocket support/carrier?

Here be mechanigeeks. Anything technical that is not a teething problem.
jmh
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Re: How to replace bearings in sprocket support/carrier?

Post by jmh » Sat Feb 03, 2018 10:11 pm

Weird it’s not in the parts diagram huh.

I even called a ktm garage and their mechanic said no spacer.

Thanks.

Magic Wand
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Re: How to replace bearings in sprocket support/carrier?

Post by Magic Wand » Sun Feb 04, 2018 8:06 pm

Yes, it's really weird...
I have bought 2 sprocket carriers from eBay, from different years, and both of them has the metal spacer in between the bearings. Also the original carrier from 2010 has got it. SO, in this case I would not believe in the mechanic. Sorry...

/M

jmh
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Re: How to replace bearings in sprocket support/carrier?

Post by jmh » Wed Feb 07, 2018 5:21 pm

Thanks for that. Even when I callled a ktm garage. Their mechanic said no.

Magic Wand
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Re: How to replace bearings in sprocket support/carrier?

Post by Magic Wand » Wed Feb 07, 2018 7:41 pm

Most likely they look at the parts diagram and can't see the distance spacer/ring between the bearings...
/M

jmh
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Re: How to replace bearings in sprocket support/carrier?

Post by jmh » Thu Feb 08, 2018 10:20 am

Yeah.
Had to order part from rc8r diagram.

Serves me for giving my bike to someone else to sort. Always just do things yourself.

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Re: How to replace bearings in sprocket support/carrier?

Post by Magic Wand » Thu Feb 08, 2018 7:36 pm

Aha! There it is! 'Bearing distance ring'. Strange that it isn't at the SMt parts diagram...
/M

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Re: How to replace bearings in sprocket support/carrier?

Post by Mich69 » Mon Apr 02, 2018 12:36 pm

Hi all, when changing my rear tire I too noticed that my sprocket carrier bearings had worn out big time.
I made this video about the bearings and the carrier.
https://youtu.be/_SdJwwwL2JE

I hope it could be of use for the KTManiacs running into similar issues.
BTW, My bearings were ordered by my local car parts stockist, price wise this is much friendlier than the official KTM bearings ;)

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Re: How to replace bearings in sprocket support/carrier?

Post by eagle_awd » Mon Apr 02, 2018 4:16 pm

Thanks for the video...will check mine as well, I'm at 65k km's now, so I'm sure it won't be pretty :)

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Re: How to replace bearings in sprocket support/carrier?

Post by adcolor » Sat Jul 20, 2019 7:49 pm

So, just changed mine out. One was just the slightest bit rough.

I installed one by Koyo/Jtekt (Japanese brand, but made in Romania), and one Nachi (Japan).
To clarify a detail for folks, in terms of bearings. You have (in generic terms) a 6006 bearing, 2RS1, C3.

6006 gives the general dimensions and broad build details/specs.
2RS means 2 sided, rubber shields.
C3 refers to how close to spec the bearings are when warm vs cold (probably more accurately it has to do with the bearings duty cycle). C3 means they are loose until warmed up -- constant load. Things like blower motors or other devices that will run constantly for years.

In an earlier picture the new bearing has a metal shield vs the rubber shield. May not give as good a seal against fluid contaminates, but would keep out hard objects. Or might be more suitable for high temperatures, etc. Research the differences just so you know how you are changing things if you use a different bearing. These are exposed to the ugliest of space (well, not high temp nor extreme chemicals).

Not all manufacturers use the same terms -- the Nachi bearing is marked 6006nse c3. Not sure what the 'nse' means, but I presume that it is the same as the '2RS'. And the Koyo is marked 6006rs on each rubber seal (you could have only one side of a bearing sealed; that would be for environments where it is getting lubrication on one side, but sealed to the outside). The original SKF bearings were made in Italy and the part details stamped on the edge of the outer metal ring. C3 was marked on the rubber ring of one new one, but only on the box label for the other.
Mods: arrow exhaust, 2nd flies removed, plugged air injection caps, JC30-80 air filter, 44T sprocket, 80w high beam, short levers, weighted bar ends, Rox risers, remapped ecu, heated grips, horn, radiator screen, crash bar, skid plate, backrest.

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