I also discovered a similar bearing i.d. radius issue for the pinion tail
bearing in the Triumph diff. The typical Timken has a fat radius that creates
a small contact surface against the pinion flange. When I researched this
matter, I did find a Timken bearing with a different i.d. radius that provided
a much wider contact to the flange. The factory also used a wider contact
here. I had a couple axle assemblies sitting around and found original numbers
on this bearing that were different than the typically available bearing.
Obviously, through the years a substitute was made. The substitute is probably
less expensive. Better profit margin, but not really better.
Dave H.
Sent from my iPad
> On Dec 29, 2020, at 5:10 PM, Phil Gott <vfracing@aol.com> wrote:
>
> Thanks, guys!
> The seal that failed is not the O-ring. It is the seal in the bearing itself.
> Gear oil from the differential is slowly working its way into the bearing and
> diluting the grease, which is getting thrown out onto the brakes.
> Much appreciate the responses. I had not heard of â??Greenâ?? bearings as a
> brand before. Good to know that the chamfer radii are different from Timken.
> In googling the part numbers it looks like Moser actually sells the bearing
> and retainer as a set available from jEGS, Summit, etc.
> Thanks very much, everyone! And for such fast responses. What a great group!
> Phil
>
> Sent from my iPhone
>
>> On Dec 29, 2020, at 7:54 PM, Dave <dlhogye@comcast.net> wrote:
>>
>> Check the radius of the Timken bearing closely and make sure it will fit,
>> or is larger than the radius on the axle flange before you install it.
>> Moser axles don't come with Timken bearings. They come with Green bearings.
>> The first time I used Timken, I found that the radius of the bearing
>> interferes with the radius of the axle and keeps the bearing from going on
>> as it should. There was about .015" gap.
>> The numbers on the Green box are 9507F RW507E. I asked the auto parts guy
>> to get me the Timken cross and when installing it, noticed I could press it
>> on all the way, leaving a gap to the shoulder.
>> Dave H.
>>
>> Sent from my iPad
>>
>>> On Dec 29, 2020, at 3:21 PM, Phil Gott via Fot <fot@autox.team.net> wrote:
>>>
>>> Does anyone know the part number for the axle bearings and shrink-on
>>> retainer used in the Southwick Conversion? Iâ??m a bit hesitant to take it
>>> apart until I have a replacement bearing. My bearing is fine but the seal
>>> is failing and throwing grease onto the brakes....
>>> Or maybe a make and model of car that it fits? I heard somewhere it is a
>>> Ford bearing, but donâ??t know the year, make and model.
>>> Thanks!
>>> Phil Gott
>>>
>>>
>>> Sent from my iPhone
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>>>
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>
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