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Originally Posted by sanddrag
Go to page 1027 on http://www.mcmaster.com (just type the page in the search box). Scroll down a bit and you will see stamped base mount ball bearings. The are lighter than their cast iron coutnerparts. Also, pillow blocks are sometimes referred to as "mounted bearings" |
AWESOME!!! Thanks for your help!!!
Is there any difference between the shaft sizes, because the 1/2", 5/8", 3/4" shaft sizes each say they support the 3/8" axles (bolts) we bought.
In addition, can we use the polyester (with delrin raceway) base-mount bearings instead of the steel ones? I would think it would be lighter, however under the circumstances, is the increased price X3 worth the added benefit?
ALSO - if we were to use 1/2" axles/bolts (our two front wheels are andymark omnidirectional wheels) would the same "pillow block" work for it? Should we get a different size? I ask this because the steel section doesn't say it supports a bolt hole size of 1/2", only stainless steel has a 1/2" bolt hole size option at 5x price though.
One other thing - say you needed 8 of these (2 for each wheel, right) are we talking a lot of weight here? If they were 10 pounds each that would be 80 pounds!!!
Any help answering these rookie questions would be greatly appreciated.