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General => General => Topic started by: midden on 20 March 2015, 05:08:05 pm

Title: Bearing codes
Post by: midden on 20 March 2015, 05:08:05 pm

I have a bearing in need of replacing (not on bike) with  6003DU8 stamped on the cover.  What does the DU relate to?
What is the difference between the DU bearing and the  6003 2RS. The sizes are the same.


Also I seem to remember there was a bearing supply catalog posted a while back but I can't find it, be a great help if there is one available
Cheers

Title: Re: Bearing codes
Post by: chaz on 20 March 2015, 06:54:40 pm

Bearing name   NSK 6003DU bearing 6003DU size
Brand   NSK bearing
Outer diameter D    35 mm
Diameter d    17 mm
Thickness B    10 mm
Brand model    6003DU
Category   deep groove ball bearing
Remark   6003DU  bearing
   
Does it mean deep groove?  RS might mean rubber seal?

Title: Re: Bearing codes
Post by: Frosties on 20 March 2015, 06:58:53 pm

Found these on t' web - means feck all to me but sounds like a dry lubed bearing  :look


http://www.dynametal.co.th/dry_du.htm (http://www.dynametal.co.th/dry_du.htm)


http://forums.mtbr.com/shocks-suspension/what-du-bearing-1728.html (http://forums.mtbr.com/shocks-suspension/what-du-bearing-1728.html)




Errrrrrrr, good luck I guess.

Title: Re: Bearing codes
Post by: Kosmic Kartman on 20 March 2015, 07:02:17 pm

2RS means each side of the bearing has a rubber seal.

Title: Re: Bearing codes
Post by: midden on 20 March 2015, 07:50:28 pm

Quote from: Frosties on 20 March 2015, 06:58:53 pm

Found these on t' web - means feck all to me but sounds like a dry lubed bearing  :look


[url]http://www.dynametal.co.th/dry_du.htm[/url] ([url]http://www.dynametal.co.th/dry_du.htm[/url])


[url]http://forums.mtbr.com/shocks-suspension/what-du-bearing-1728.html[/url] ([url]http://forums.mtbr.com/shocks-suspension/what-du-bearing-1728.html[/url])




Errrrrrrr, good luck I guess.

cheers for links, confident mine don't need replacing now as they were feeling a bit dry  ;)

cheers for all replies  :)

Title: Re: Bearing codes
Post by: chris.biker on 20 March 2015, 08:08:14 pm

http://www.nskbearing.cc/NSK-bearings/NSK_6303DU_11293_china.html (http://www.nskbearing.cc/NSK-bearings/NSK_6303DU_11293_china.html)

I think the DU is the shield material, but explanation in above. If the bearing feels anything but sooth it will not last long.