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  •  » FYI Ford, Classic Mustang Tech Discussion
  •  » Small bearing 9” 31 spline axle seals?

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    2/10/2019 2:39 PM  #1

    Bentworker
    I FYI 24-7

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    Registered: 9/17/2017
    Posts: 475

    Small bearing 9” 31 spline axle seals?

    Anyone have seal suggestions for 31 spline axles in a small bearing housing?

    Thanks for your time,
    Peter

     

    2/10/2019 4:21 PM  #2

    Bolted to Floor
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    From: Houston, Texas
    Registered: 4/01/2013
    Posts: 2,018

    Re: Small bearing 9” 31 spline axle seals?

    For a seal, I would take the axle shaft with me to the local auto parts.

    For an axle shaft, we need to know what you’re working on!!!

    John  -- 67 Mustang Coupe 390 5 speed
     

    2/10/2019 4:26 PM  #3

    Bentworker
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    Re: Small bearing 9” 31 spline axle seals?

    Ford 9” small bearing housing with 31 spline axles.


    Bearing is 2.834”x1.562”

    Not a normal small bearing with a 28 spline...


    Considering going with these to eliminate the seal, but I am not sure they will work with the MS cobra brake retainers...

    https://www.strangeengineering.net/product/small-ford-2-834-1-562-axle-bearing-ea.html/

    Last edited by Bentworker (2/10/2019 4:27 PM)

       •Thread Starter
     

    2/10/2019 6:09 PM  #4

    MS
    Forum Originator

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    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 12,299

    Re: Small bearing 9” 31 spline axle seals?

    Do your axles have the pressed-on sleeve where the seal interfaces with the axle?  Seal depends on whether or not you have that type axle.  My truck has 31 spline small bearing 9" with the sleeves. I got the seals from OReilly.  NOT the normal 28 spline small bearing seal.  NOT the normal 31 spline big bearing seal.  There is a third one that is just right if you have the axles with the sleeve.  Sorry I do not have the seal number.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    2/10/2019 6:31 PM  #5

    Bolted to Floor
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    From: Houston, Texas
    Registered: 4/01/2013
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    Re: Small bearing 9” 31 spline axle seals?

    My 67 has a small bearing housing. I bought Jegs brand 31 spline axle shafts and used bearings from Oreilly's, part number BCA RW207CCRA. The dimensions are off form what you posted. The inner seal part number I had is not good. It took a trip to the parts house to come up with the right one.

    That's a neat idea from Strange, you had best call them to find out why their retainer plates are required. The Ford design has worked well fro many years. Is it worth it to spend $15 more per bearing and $100 on retainer plates to eliminate $8 worth of seals?

    John  -- 67 Mustang Coupe 390 5 speed
     

    2/10/2019 9:07 PM  #6

    Bentworker
    I FYI 24-7

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    Registered: 9/17/2017
    Posts: 475

    Re: Small bearing 9” 31 spline axle seals?

    AH-HA!

    Well, I know why it was leaking now...
    Drumroll...

    I had seals in it for a large bearing size shaft, and my 31 spline axles from strange or moser had the small bearing journal.   The seal surface was riding in air...

    So, Incorrect seals for me, but correct seals if you are running the larger diameter axle with the goofy large axle to small housing conversion bearing...
    National 9363-S
    Those ones are about 2.25” od, and would seal on a 1.562” shaft.

    National 9569-S is what I need to seal up on the 1 3/8” ish (small) shaft in a small bearing housing.

    At least it was a cheap mistake.

       •Thread Starter
     

     

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  •  »  Small bearing 9” 31 spline axle seals?

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