Interesting concentric sealed bearing, like a pillow block, from Hub City. The outer portion measures 52mm dia x 15mm thick with an anti-rotation pin, and the inner measures 34mm dia x 12mm thick with a 22mm ID bore and (2) 3mm setscrews.
LAZY SCOTT BEARINGS
Never seemed fair to nail the "lazy" tag so permanently on the "Susans"
but that probably has no "bearing" on the issue. Also called turntable
bearings, they are the square or circular flat ball bearing devices YOU bolt
between two flat objects to achieve rotation. Like that spinning center
section of a Chinese restaurant table. We had these in surplus once and
they were quite popular. To our chagrin, we discovered they could be
bought commercially for the same price. So we did. The 4" version is
rated for a 300lb. load and the 12" (round) for 1000lbs.
Well, who doesn’t, really? And yet most of us confine our swiveling to our local dive. Until now, when you can buy genuine authentic bar-stool swivel plates and make home swiveling a reality. In heavy-duty steel, double 7” square plates are separated by a plethora of steel ball bearings, and have 1/4” mounting holes on the corners. Might be a touch stiff at first, but a little break-in swiveling and a drop of oil or dab of grease will fix that. Please note: These are designed to be stiff not swivel freely. To test, add oil or grease, stand on and twist and shout like the Beatles.
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In addition to this fabulous on-line catalog of incredible stuff, American Science & Surplus has three great retail locations. If you're in the neighborhood, please stop by! Store hours may vary. Feel free to call for store hours and directions.