What is a 'VRS' bearing?

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mxh
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What is a 'VRS' bearing?

Postby mxh » Sun Nov 10, 2013 22:46 pm

I'm going to replace the shock linkage bearings on a Trek Lush as they're a bit sticky, and looking at the code on them they are a 6900-VRS.

I've tried a bit of googling to find out what a VRS type bearing is, but can't find anything. It seems to be just a standard 22*10*6 with 2 rubber seals - so I'm just going to use some 6900-2RS instead.

But does anyone know what a VRS bearing is, and what's the difference from a 2RS?

And just in case someone asks - No, I haven't read it wrong. It's definitely VRS :)

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nicklouse
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Re: What is a 'VRS' bearing?

Postby nicklouse » Sun Nov 10, 2013 23:02 pm

where are you getting this VRS info from as it does not describe ant standard sealing standard.
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mxh
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Re: What is a 'VRS' bearing?

Postby mxh » Mon Nov 11, 2013 00:05 am

It's written / stamped on one of the rubber seals of the bearing.

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Giraffoto
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Re: What is a 'VRS' bearing?

Postby Giraffoto » Mon Nov 11, 2013 07:40 am

I can't remember all the prefixes and codes, but there are bearings with the seals made of different materials (including stainless steel) and with different properties (such as guaranteed water resistant to x metres HD) and the bearing codes reflect this. It may also, on the other hand, be just something this manufacturer does to distinguish their "extra special" range. It's the four digits that tell you you've got the right size though.
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suspended
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Re: What is a 'VRS' bearing?

Postby suspended » Mon Nov 11, 2013 08:55 am

mxh wrote:I'm going to replace the shock linkage bearings on a Trek Lush as they're a bit sticky, and looking at the code on them they are a 6900-VRS.

I've tried a bit of googling to find out what a VRS type bearing is, but can't find anything. It seems to be just a standard 22*10*6 with 2 rubber seals - so I'm just going to use some 6900-2RS instead.

But does anyone know what a VRS bearing is, and what's the difference from a 2RS?

And just in case someone asks - No, I haven't read it wrong. It's definitely VRS :)


Not sure what the difference might be but, on pages 33 and 34 of the PDF at the following URL (http://www.trekbikes.com.ua/doctrek/sus ... agrams.pdf), the bearing you appear to be describing is given as 6900-2RS so that will probably be fine.

kwozzymodo
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Re: What is a 'VRS' bearing?

Postby kwozzymodo » Mon Nov 11, 2013 10:47 am


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stubs
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Re: What is a 'VRS' bearing?

Postby stubs » Mon Nov 11, 2013 10:51 am

Its a non contact low friction seal used for very high speed applications. Pointless fitting it to a suspension link just fit the right number RS bearing.
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mxh
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Re: What is a 'VRS' bearing?

Postby mxh » Mon Nov 11, 2013 22:23 pm

kwozzymodo wrote:http://www.bearingworks.com/technical_data/seals_and_shields.php


Hmm, so "The ‘RS’ type seal is a rubber seal that makes contact with the inner race" and the " The ‘V' type seal is a non-contact type rubber seal that does not contact the inner race". So a "VRS" is, well, who knows!!

But if it is for high speed applications (as 'stubs' suggests) I wonder why they put it in a suspension linkage - especially as the suspension PDF that 'suspended' has linked to does indeed show 6900-2RS bearings - maybe they ordered the wrong ones at the factory and just used them anyway!

Thanks for the responses guys.

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Kowalski675
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Re: What is a 'VRS' bearing?

Postby Kowalski675 » Mon Nov 11, 2013 23:12 pm

mxh wrote:So a "VRS" is, well, who knows!!



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