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GH
 
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lid wrote:

I want the be able to spin by hand a heavy 24" round turntable on top of my
workbench using centrifugal force. Like the wheel on a car but horizontal.


If I understand your problem correctly, you're concerned that a lazy
susan bearing won't take side thrust and may not stand up to continuous
high-speed use.

How about splitting the problem into two parts -- use 3 or 4 skateboard
bearings mounted around the edge of the turntable to carry the weight,
use another 1 or 2 on the axle to take the side thrust.

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GH