Jib crane bearing races

[Frank S]

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.

[Frank S]

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

[DIYer]

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:

Jib Crane Bearing by Frank S

tags: bearing, jib crane

[DIYer]

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:

Bearing Weather Seal by Frank S

tags: bearing, seal, turntable