[Fot] variation in Timken carrier bearing width?

Sat Oct 1 03:49:11 MDT 2016

The material is a huge problem! Do not use fake bearings! If you are worried, go for a good Japanese brand such as NSK, NTN or European FAG etc. AND BUY from an authorized distributor!

Here are some Chinese made alloy wheels that are very popular on general trailers, car trailers and boat trailers. I don’t need to add any comments. The pics will speak for themselves. I have destroyed 6 wheels in the last  few months! Luckily without killing anyone or myself!

The material is RUBBISH and unsuitable for the application! These wheels are made by/go under the brand KOYA. The make car alloy wheels as well and openly admit to wheel fractures on their website! It’s a crazy world we live in at the present!

"You can Make a Small Fortune From Motor Racing. As long as You Started With A Lage Fortune!"

Kind Regards

Peter Vucinic

TR4 - TR7 V8 - Spitfire MkII

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From: Fot [mailto:fot-bounces at autox.team.net] On Behalf Of fubog1
Sent: Saturday, 1 October 2016 1:41 AM
To: hpspitfire at gmail.com; jsukey at gmail.com
Cc: fot at autox.team.net
Subject: Re: [Fot] variation in Timken carrier bearing width?

This confirms some of the scuttlebutt I've heard, fake bearings, but I can't say that I've run across suspect Timkens... yet.
I was told by a Timken supplier that some of them are made in ??? nowadays but he didn't elaborate.
I have also noticed that the races on some appear to be pretty soft, they deform easily with a mild steel drift.
Glen

-----Original Message-----
From: Aaron Johnson <hpspitfire at gmail.com>
To: Jason Sukey <jsukey at gmail.com>
Cc: FOT list <fot at autox.team.net>
Sent: Fri, Sep 30, 2016 11:21 am
Subject: Re: [Fot] variation in Timken carrier bearing width?

How did you order the bearings?    There is a huge counterfit bearing manufacturing market.   I have lost count how many times over the last 6 years I've had to investigate them.  The last set of ball bearings I bought were skf but we're obviously not legitimate.  I took it with me to skf on a visit and confirmed it was not made in any of their factories.  

If you've got concerns of counterfit bearings send me some pictures and I can help. 

Aaron

Sent from my iPhone

On 29-Sep-2016, at 10:29 PM, Jason Sukey <jsukey at gmail.com> wrote:

John, 

        Replacing the old bearings because they were worn out.  New Timkens seem to be the best available option.

Jason

On Thu, Sep 29, 2016 at 12:52 PM, John Styduhar <johnstydo at gmail.com> wrote:

Some of the USA-stamped Timkens even look cheap when you compare them to the England-made.  I wouldn't be surprised if they were made overseas. If there is nothing wrong with your old bearings, why replace them?

On Thu, Sep 29, 2016 at 8:59 AM, Jason Sukey <jsukey at gmail.com> wrote:

Has anyone else noticed rather large variation in carrier bearing width's when rebuilding a spitfire differential?  The one I'm building right now, I've replaced what I suspect are the original bearings (Timken England) with brand new Timken USA bearings.  In order to reach the required .004" preload, it will require .012" LESS total shim than what was in there originally.  That seems like a big difference with the only variable being new bearings.  I'm using the same housing, same carrier, the bearings visually look to be fully pressed home.  Anyone else experience this? 

Thanks,

Jason Sukey

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