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  1. #1
    Join Date
    May 2012
    Location
    Vermont 3133 Victoria
    Posts
    248

    Default Thomas 4 x 4 tyre pump

    Hi Gang,
    I have this Thomas pump which is need of some work. I have stripped it down and am replacing the bearings. One was marked as 6102Z which I ordered from RS components. didn't think to check the dimensions. So it seems 6102Z is a 12mm ID I need 8mm ID.? Bearing I need is is 32x10x8. Also the piston seal is a plastic type cup, should I just give it a light smear of grease.
    Cheers
    Bruce

  2. #2
    Join Date
    Oct 2011
    Location
    Norwood-ish, Adelaide
    Age
    59
    Posts
    6,541

    Default

    I think there have been a few mix ups here
    A 6201 is OD32, ID12 and 10 high. I can't find a SKF listing for a 6102 Z or a 610 2Z (the Z meaning grease shields from memory)
    I also tried selecting a bearing of OD32, ID8 and 10 high and that came up empty as well.

    If you really need 32x10x8 then you may have to make up a sleeve for the bearing you have been given.

    Michael

  3. #3
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,443

    Default

    HI Bruce, Guys,

    Like Michael, I have been unable to fine anything for that bearing number ! I do recall that quite some time ago there was a range of bearing numbers that was discontinued. I would have a wonder round to my local bearing supplier and ask them to help find the actual bearing that you want from the sizes. They will have cross reference guides that they use that are not generally made public.
    Best Regards:
    Baron J.

  4. #4
    Join Date
    Dec 2005
    Location
    South Australia
    Posts
    1,656

    Default

    If this is the same Thomas as made 4x4 winches ,they are known for using custom made components only available through them

  5. #5
    Join Date
    May 2012
    Location
    Vermont 3133 Victoria
    Posts
    248

    Default

    Boy Now I think I might be dyslectic.
    I just checked the number on the shield and it is 6201z, Hoover NSK. This pump unit is made in the USA. The bearing is definitely 32 OD x10 high x ID8 as measured.

  6. #6
    Join Date
    May 2012
    Location
    Vermont 3133 Victoria
    Posts
    248

    Default

    Definitely no sleeve on the shaft.

  7. #7
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,443

    Default

    Bruce,

    Bearing 6201 is a 12 mm bore ! 32 mm Diameter and 10 mm Thick !
    Best Regards:
    Baron J.

  8. #8
    Join Date
    May 2012
    Location
    Vermont 3133 Victoria
    Posts
    248

    Default

    Yep,
    And 6201 is on the shield but the ID is 8mm with no sleeve, could it be an imperial size?20191113_211123.jpg20191113_211107.jpg

  9. #9
    Join Date
    May 2012
    Location
    Vermont 3133 Victoria
    Posts
    248

    Default

    Yes I think so.

  10. #10
    Join Date
    Aug 2008
    Location
    near Rockhampton
    Posts
    6,216

    Default

    Just bush a 6201 bearing. Job done.
    Gold, the colour of choice for the discerning person.

  11. #11
    Join Date
    May 2012
    Location
    Vermont 3133 Victoria
    Posts
    248

    Default

    yep but the lathe is in rebuild.

  12. #12
    Join Date
    Sep 2008
    Location
    Riddells Creek, Vic.
    Posts
    831

    Default

    Are you sure it is 8mm I/D Bruce, it could be a 6201 metric bearing with an imperial bore ie 5/16". What did you use to measure the bore?

    Lex.

  13. #13
    Join Date
    May 2012
    Location
    Vermont 3133 Victoria
    Posts
    248

    Default

    Hi Lex,
    The shaft mic's as 8mm, can you get off the shelf 6201 metric bearing with an imperial bore of 5/16.
    Regards
    Bruce

  14. #14
    Join Date
    Sep 2008
    Location
    Riddells Creek, Vic.
    Posts
    831

    Default

    I'm not sure about 5/16" Bruce, but I do know that you can get 1/2" and possibly other imperial sizes.

  15. #15
    Join Date
    May 2012
    Location
    Vermont 3133 Victoria
    Posts
    248

    Default

    Turns out Bearing wholesales in Bayswater have 1 6201Z with an 8 mm bore so I will get it tomorrow.

    Cheers
    Bruce

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