The Triumph Dolomite Club - Discussion Forum

The Number One Club for owners of Triumph's range of small saloons from the 1960s and 1970s.
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PostPosted: Sat Jul 11, 2020 6:02 pm 
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Good afternoon, this might be of some help to you.

The rear hub bearing on a sprint is Timken part 2585 / 2523S. These are about £120 plus VAT each. However, Timken part 2585 / 2523 is only £35 plus VAT and has identical dimensions. I spoke to Timken (who were very helpful) and they confirmed the difference is an increase of 0.2mm on the edge radius of the cup. They were even kind enough to send me drawings for both bearings.

It is possible that the smaller radius could sit on the fillet in the hub and therefore stop the cup pushing fully home against the shoulder, so I ground a whisker of the edge and it pressed in with no issues. The pictures below explain it better. The first picture is the cup as standard and the second picture is after I have ground the edge.

I haven't run the car yet as I need to source a new half-shaft, but as soon as its back on the road I'll update the post - The bearing dimensions are identical so I don't foresee any issues.

Image

Image

Image


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PostPosted: Sun Jul 12, 2020 10:19 am 
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Location: Filey, North Yorkshire
If it all works out then that's an awesome money saving!

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PostPosted: Sun Aug 16, 2020 8:44 pm 
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Just an update.....I've done a couple of hundred miles and all seems well.


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PostPosted: Thu Aug 27, 2020 7:44 am 
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Joined: Thu Sep 28, 2006 1:13 pm
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Location: Over here...can't you see me?
If anyone is considering this job on their Sprint in the near future, I now have a small quantity of new old stock Unipart boxed bearings, part number GHB166 which are British made Timken or SKF brands. PM me if you wish to acquire at significantly less than £35 a piece.

Rimmer Bros are now quoting £152 for these!


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PostPosted: Thu Aug 27, 2020 10:05 am 
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Joined: Mon Dec 03, 2012 6:04 pm
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Quote:
Good afternoon, this might be of some help to you.

The rear hub bearing on a sprint is Timken part 2585 / 2523S. These are about £120 plus VAT each. However, Timken part 2585 / 2523 is only £35 plus VAT and has identical dimensions. I spoke to Timken (who were very helpful) and they confirmed the difference is an increase of 0.2mm on the edge radius of the cup. They were even kind enough to send me drawings for both bearings.

It is possible that the smaller radius could sit on the fillet in the hub and therefore stop the cup pushing fully home against the shoulder, so I ground a whisker of the edge and it pressed in with no issues. The pictures below explain it better. The first picture is the cup as standard and the second picture is after I have ground the edge.

I haven't run the car yet as I need to source a new half-shaft, but as soon as its back on the road I'll update the post - The bearing dimensions are identical so I don't foresee any issues.

Image

Image

Image
Did you grind that by hand? If you did it is impressively precise, I don't think I could do it that accurately.


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