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  1. #1
    Join Date
    Apr 2019
    Location
    Adelaide
    Posts
    589

    Default Machinery Skate Bearings

    Looking to make some machinery skates to move some machines that are arriving soon (hopefully these won't fall off the forklift!!!).

    What type of bearing should I be looking to use on the top to allow the skate to swivel under the machine? I have looked at thrust bearings and they tend to be flat bearings with either balls of rollers between 2 separate washer looking bits. There are also the bearings that are used in a clutch as the thrust/release bearing which are larger and seem to be ball type only.

    I am looking to have each skate handle 1,000kg (maybe a little more). An ID of 12-30mm and OD of up to 90mm would fit - I am designing around the bearings although the C-channel I will use is 100mm wide.

    Rather than looking at the SKF catalogues and not really knowing what I am doing I thought I would ask the brains trust!!

    Cheers

    PS - using pallet jack front rollers as the wheels

  2. #2
    Join Date
    Mar 2011
    Location
    Southern Flinders Ranges
    Posts
    1,536

    Default

    Last homemade set I saw was done with tapered roller bearings on the top (trailer bearings most likely because they were cheap). The top of the skate had a press fit ring welded onto it which seated the cup, the turntable was machined to hold the race and cover the moving parts. Seemed to work ok.

  3. #3
    Join Date
    Nov 2017
    Location
    Geelong, Australia
    Age
    57
    Posts
    2,651

    Default

    I'd be leaning towards tapered rollers too. I wouldn't trust a clutch thrust bearing to support a load.

    If you did go down the path of a classic thrust bearing (eg 2 grooved plates and balls between), you'd want to have some provision for taking radial load as the thrust bearings are pure thrust/axial load only.

    With the tapered rollers you'd still want to retain the turntables somehow to stop them falling apart when you pick them up - but in use both the axial and radial loads are taken care of by the bearing.

    Steve

  4. #4
    Join Date
    Apr 2019
    Location
    Adelaide
    Posts
    589

    Default

    A trailer tapered bearing is designed to take a radial load but I guess it is also designed to handle a side load. Something like an SKF LM67048/10 is rated to 41.5KN static which is over 4 tonnes - should be plenty! It is also cheap as stated

    Will give it a go.

    Cheers fellas

  5. #5
    Join Date
    Apr 2019
    Location
    Adelaide
    Posts
    589

    Default

    Finally found time to finish off my machinery skates. Not tested yet but quite happy.

    20201017_160632.jpg

  6. #6
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    71
    Posts
    5,942

    Default

    Nice work. Where did you score the pallet jack front rollers as the wheels from??
    Regards,
    Kryn
    To grow old is mandatory, growing up is optional.

  7. #7
    Join Date
    Apr 2019
    Location
    Adelaide
    Posts
    589

    Default

    The nylon wheels came from Mitaco https://www.mitaco.com.au/products/n...k-front-roller

  8. #8
    Join Date
    Mar 2011
    Location
    Southern Flinders Ranges
    Posts
    1,536

    Default

    I’d be be happy with those too. Well executed.

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