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.
You pick: the sleeved bearing, sometimes listed as a "special agricultural bearing," is a single race radial bearing, 1-9/16" OD x 5/8" ID x 3/4" with a black plastic sleeve surrounding it, measuring 1-13/16" x 1" with a 1/16" wall; the booted bearing measures 1-1/2" OD x just shy of 11/16" ID x 1/2" thick, inside a 1-13/16" black rubber boot with a removable hex ID bushing.
Our each is (10) feet of #420 roller chain with a 1/2" pitch at 1/4" wide. Pre-stretched and heat-treated, and includes a master link. Rated for a 3600-lb load. This size is used with a lot of minibike and go-kart drives.
That is the question. You pick: the 3” x 1-1/4” dia swivel-stem caster with a rubber-coated plastic wheel on a 1/4” x 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.
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.
If these were full-size, car guys would put them on restored ’57 Bel Airs and low riders. These 6” dia solid rubber wheels are gray with (5) treads on 1-7/8” wide tires. Mounted on a 4” dia aluminum rim with dual 9/16” ID bearings with a loose bushing between them. One side has a nearly 1-3/4” dia hub that protrudes approx 3/16”; the other bearing is recessed by 3/8”.
For your riding comfort, this 9-5/8" dia x 3" wide pneumatic tire has a plastic hub, rubber treads and a 25psi inner tube. Has a 1/2” ID with a 1-1/4” dia x 15/16” axle hub on the inside face and a standard Schrader air valve on the outer. Great for DIY large wagons, or to replace those little hand truck tires.
Biggest industrial bearing we’ve seen in a dog’s age, and we’ve got some old industrial dogs around here. This shielded, single-direction roller thrust bearing is 80mm OD x 30mm ID x 36mm thick. Unique bore. Will fit either 30mm square or 31mm round shaft. Part #208PP5.
Steel. Not used but a little rusty from storage. Handy. Measures 3-1/2" dia with a single 1/2” ID sheave with a 2-1/8" x 1-5/8" dia hub and a keyed 1” ID bore. Drilled for a 1/4” - 16 setscrew (not included). Made in the USA.