Good-bye backaches. Save your sacroiliac with a 3-wheeled professional mover's dolly. It measures 6-3/8" wide between a trio of swivel casters with 1-9/16" x 11/16" wheels, and has a drop-down center and a 1/2" dia hole for permanent attachment to frequently moved items. Steel construction, 110 lb max load (so not piano-duty), and rubber pads above each wheel. Stands 2-1/2" tall. We think ordering (4) would be a good place to start.
These light-duty plastic casters are on swiveling stems and have dual 1-1/2" dia x 5/16" wheels in 1-7/8" x 1-3/16" hemispheric housings. Stems are striated steel, 3/8" dia x 3/4" long. We're thinking these would be fine for your average chair. Our each is a bag of (4).
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.
A nice pulley just ready to be combined into the block and tackle you
need for tiny jobs, like trimming your bonsai trees or hauling your
model boat out of the pond. Get this block with (1) sheave and rig up
whatever you need. Each block has an aluminum frame about 3–1/2” long
with “S” hooks on each end. The sheaves, or wheels are about 2” dia x
1/4” wide, with a “V” groove that looks perfect to handle 1/8” or
smaller Venetian blind cord. These dudes are perfect for demonstrating
mechanical advantage in the physics lab!! But not for heavy lifting.
Would be yellow, no? Yes, but you could put these nifty white plastic wheels on anything you like. You've seen lawnmower wheels? That's what these are like. Measure 6" dia x 1-7/16" thick with hard black rubber treads, a 1/2" axle bore and a 13/16" x 1/4" hub on the opposite side.
The ball casters are great swivelers and quite snazzy looking, too. Seen on your better chairs everywhere. These are brass plated on 1-1/2" square mounting plates with 3/16" holes at the corners. You pick the 2" or 2-1/2" dia versions.
These hard rubber wheels measure 3" dia x 1" with a 5/16" ID and a hub that extends exactly one perfect smidgen, making them 1-3/16" wide at the axle. Outside surface is slightly (call it a micro-smidgen) convex.
This black plastic gear is 3-1/16" dia with (96) teeth at 32 pitch, 20-degree pressure angle. Center has a 9/16" ID bore with a 3/4" dia x 1/8" bushing on both sides. One side also has (3) 3/32" ID x 1/8" standoffs along with a 3/16" tooth along one edge. Source and function are unknown but you'll think of something.
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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.