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Thread: Jib crane bearing races

  1. #1
    Supporting Member Frank S's Avatar
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    Jib crane bearing races

    Sometimes it is next to impossible to find the size bearings you need so you have to make them
    Shown below is a 28 inch diameter bearing set for a jib crane
    the way the races are machined the inner race fits around a H beam and has a 90°contact area for the balls
    the outer race still in the lathe has a 90° contact area as well but is the opposite of the inside this way the bearing was not only 100% thrust capable but 100% radial as well Not like the angular contact bearings that can be bought off the shelf
    the material was ASTM 514 T1 steel later it was surface hardened.
    Jib crane bearing races-28-inch-jib-crane-bearing.jpg

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    Last edited by Frank S; 08-09-2018 at 03:37 PM.
    Never try to tell me it can't be done
    When I have to paint I use http://kbs.justoldtrucks.com/

  2. The Following User Says Thank You to Frank S For This Useful Post:

    Paul Jones (08-10-2018)

  3. #2
    Supporting Member Frank S's Avatar
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    Frank S's Tools

    Horizontal Bead roller set up

    Once I needed to make a turn table to be mounted in the floor for rail mounted trolleys to traverse and change directions. To do this I wanted a rubber seal to keep out dirt or water when the floor was cleaned
    I mounted my bead roller on the turn table then made the bead in the metal ring tacked to the turntable
    Jib crane bearing races-rolling-seal-bead1.jpg

    Jib crane bearing races-turn-table-2.jpg

    Jib crane bearing races-turn-table-base.jpg

    Jib crane bearing races-weather-tight-seal.jpg
    Never try to tell me it can't be done
    When I have to paint I use http://kbs.justoldtrucks.com/

  4. #3
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    Thanks Frank S! We've added your Jib Crane Bearing to our Cranes category,
    as well as to your builder page: Frank S's Homemade Tools. Your receipt:




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    Thanks Frank S! We've added your Bearing Weather Seal to our Miscellaneous category,
    as well as to your builder page: Frank S's Homemade Tools. Your receipt:






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