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Post by Teachndad on Feb 17, 2024 6:16:32 GMT -8
Hi Friends, For anyone researching and looking for bearing and grease seal info for a 1955 Rod and Reel with @length 17' that looks like this:  Here are the bearing numbers and grease seal from the original axle. Inner bearing – Timken 2788 Outer bearing – Timken 1779 Grease Seal is a National 5970 and Modern Equivalent is a Timken 203034 Timken 203034 - Nitrile Oil Seal - Solid, 1.875 in Shaft Dia., 3.000 in OD, 0.437 in Overall Width, 203 Design, Nitrile Rubber (NBR) Lip Material Cheers, Rod |
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nccamper
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Posts: 7,745 
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1962 Forester- 1956 Shasta
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Post by nccamper on Feb 17, 2024 22:41:25 GMT -8
Love the dramatic lighting.
I found replacement parts easily even on 60 year old campers.
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Post by Teachndad on Feb 22, 2024 6:40:11 GMT -8
Hi Friends,
Here is some more information. I made the mistake of opening up the hub and removing the grease seal before ordering a new seal. That meant the trailer was sitting up on a jack on one side - I live in earthquake country and we had a reminder a few days earlier...
I was going to be leaving soon for a trip I could not postpone. I wanted to get a new seal installed and the hub/wheel re-installed before I left.
Long story short, I ended up ordering seals from two different sellers and manufacturers off the Big River site hoping to get at least one seal before I left. That way, I could reinstall the hub and wheel so as not to worry that my trailer might fall off the jack during a "shaker". Two seals were from Timken and one from National. The National brand seal arrived first. I was able to install that seal during a 1 hour rain window in the middle of a storm. Note, the National brand is under the Timken umbrella. I thought, "Oh sure, they should be identical".
Boy was I wrong.
A Timken seal arrived the evening before I left. I opened up the box and immediately noticed some differences between the National seal and the Timken seal.
The National seal was lighter in weight.
The Timken seal was definitely heavier. The inner nitrile on the inner diameter was more robust and the double walls for the seal were thicker. The nitrile also seemed to be more pliable but stronger if that makes sense. On the inner side of the seal was a thicker rubber o ring.
hmmmm...
I have decided that when I get back home, I will pull the National seal off the hub and replace it with the Timken seal. I just feel it's a better product especially in the long term. A little bit of extra work to save myself some possible grief down the road. (No pun intended)
So, guess which one was cheaper. Yes, the National brand seal was $11 and the Timken was $19.
You get what you pay for?
The National seal I am sure would have worked for the short term, but I certainly feel more comfortable with the more robust Timken seal. That's just me, though.
Cheers,
Rod
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