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).
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.
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.
Our 4" dia swivel-stem casters have 3/4" wide dual black-plastic wheels and 1" steel stems with 1/2" - 13 threads. Available with or without a foot-operated lock No weight limit listed, but they're pretty sturdy, and pretty snazzy, at least to the extent that casters admit of snazziness.
This set of (4) stylish gray plastic casters includes (2) fixed and (2) swivelers. All have double 1-1/2" dia x 1/4" wheels set on an axle and are 1-3/16" wide overall. Fixed caster plates are 2-7/8" x 1-5/8" with 3/16" mounting holes on the corners and a tooth on the long side; swivel plates are1-5/8" sq with 3/16" mounting holes.
That is the question. You pick: the 3” x 1-1/4” dia swivel-stem caster with a rubber-coated plastic wheel on a 1” long threaded stem, or the same thing with a lever lock on the bolt side of the axle. Both have 1/2”-12 thread.
These black-plastic swiveling casters are the ones found on half the desk chairs on the planet, and look like a mini bottom half of one-a-them Segwayers. The dual wheels are 2" dia x 3/8" thick in a 1-1/2" wide case on a 5/16" - 18 threaded stem 1" long. Rated for 75 lbs each.
These ball casters are great swivelers and quite snazzy looking, too. Seen on your better chairs everywhere. These are brass plated, 2-1/2" dia on 1-1/2" square mounting plates with 3/16" holes at the corners.
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