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What bearing is this??

babun
Not for a gun {I think}, but this is the first place I'm asking because of all the diverse
experts here. I just bought about 300 of these Torrington bearings.{don't ask!!!}
The part number on the 1976 box is "AHTT-44813" . It looks like it is made to lock into a casting or part and have only the outer race revolve. The inner hole {.311"} is OFFSET from the outside diameter and appears to be used only as a grease/oil pathway.
When I google/search on the part number, The ONLY place I see it is on a Russian bearing supplier website [No info given-just to order them}.
Torrington and Timkin have no hits on this bearing. Anyone know anything about it??
Any one worked or knows someone that did work at torrington back in 1976??
Thanks...
1001070oz.jpg
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Comments

13 comments

Date Votes
  • DRP-AZ
    Call Bearing, Belt and Chain in Phx.

    Those guys know some stuff that's long forgotten by the rest of the world.
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  • babun
    Thanks, I will.
    One of the cultural shocks, I had when I moved to Tenn. about 15 years ago, was the almost
    total loss of "old" info. Up in New Yuk, you could always find an old timer that knew anything about anything. I even knew who had model T ford parts still on their selves in original boxes!!.
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  • Wolf.
    Try going to the Fafnir Beraing website and send them an email, a site message or telephone call by using their "contact us" feature.

    I don't think that querying the MIL-spec number is going to help much. This may be a standard bearing that has applications in the military, hence the MIL-spec number. If it was a military part, it may not have a civilian application.

    Anyway, just a nudge....hopefully in the right direction.
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  • babun
    If it had a mil spec number, I could find lots of info on it. What you see as a "mil-g" and "super mil" is the type of assy lubes used by Torrington. I am familiar with those.
    The "antt" is confusing to me as I remember the type of bearing, IE..roller,flanged,sealed, ect,ect, is id'ed by the letters, and "antt" is not listed anywhere.
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  • andrewsw16
    The Timken site has an AHTT-44817, an airframe roller bearing. Perhaps since it so old, the stock number has been changed.
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  • 11b6r
    Timken absorbed the original maker.
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  • cussedemgun
    babun,

    The "type" bearing pictured is designed for use as a roller guide.

    The key slot & offset hole are to provide sideway adjustment.

    Could be used on a moving carridge, rack & pinion system, a bandsaw blade guide, cam follower, or rolling door guide.(to name a few possible uses)

    Jim
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  • babun
    Thanks to all that helped me in finding info on this bearing.

    So far, I have found that this part number is no longer used/made, but is similar
    to a still in production bearing that is used for military air frames. My bearing is "listed" mainly on Russian supply websites. The similar bearing is now de-militarized.

    So if anyone knows who has 300 MIG21's they need bearings for, please send them my email address...[:D]
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  • givette
    Just a gut feeling, but the rollers in an aircraft's cargo floor was the first thing that came to mind when I saw the photo..



    ..perhaps a cabinet maker can use them as rollers for the drawers?
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  • babun
    quote:Originally posted by givette
    Just a gut feeling, but the rollers in an aircraft's cargo floor was the first thing that came to mind when I saw the photo..



    ..perhaps a cabinet maker can use them as rollers for the drawers?




    I think you may be right. As soon as Gunbroker resets my selling abilities, {my credit card expired}, I will list some lots of 12pcs. for only $4.00.
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  • v35
    Looks like a special and a thrust bearing to me and the Mil spec grease looks like low temp.
    There is a Viton seal so no lube or contaminant can get in for the life of the bearing.
    When you say offset, what do you mean?
    Is the bore eccentric to the outside diameter of the bearing?
    The slots are there to accept a keyed shaft to prevent slippage.
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  • babun
    NO, there is a hole inside the inner race to allow external grease to be applied from the housing via the inner shaft. It is NOT a sealed bearing. Note the two relief cuts on the inner housing at 10 and 4 o'clock on the some what rounded corner square. These would lock the bearing into a housing or flange.
    The inner id is offset from the od by about .080". The inner race would not revolve in use. Think about a roller on a loading rack or conveyor table.
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  • fordsix
    possible muffler or blinker bearings[:D]
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