Large Bushing
Large Bushing
(OP)
I am looking for some info on the design of large greased bushings. I have a 10 foot diameter, very low RPM shaft subject to a large bending moment.
Any reference design books or even a potential supplier would be a great help.
Thanks.
Any reference design books or even a potential supplier would be a great help.
Thanks.





RE: Large Bushing
One traditional solution is a piece of railroad rail, bent into a circle the hard way, and supported by a pair of double- flanged crane wheels, or for really heavy loads, several bogies equipped with crane wheels.
Another traditional solution is a circular band of thick steel, supported by bogies having slightly crowned but otherwise plain roller wheels.
Look for pictures of ready-mix trucks and cement kilns.
Mike Halloran
Pembroke Pines, FL, USA
RE: Large Bushing
RE: Large Bushing
I have also had some good luck using a turntable bearing in an application similar to this (just not nearly this big). Kaydon has a 96" on their "standard" offering brochure which can handle 4,975,000 ft-lbs of moment load.
I'm sure they are pretty much made to order, and would be able to build any size you want. The bearing may cost a little more, but the machining costs are so much less.
RE: Large Bushing
RE: Large Bushing