Service Caster Series #30 rigid caster fitted with 4 inch diameter by 2 inch wide thermoplastic rubber donut tread on polyolefin core. Tread is soft, non-marking and non-marring. Rounded face "donut" style tread provides easier mobility over standard flat tread wheels.
Wheel rotates on roller bearing (Use for manual speeds; 3 mph.)
300 pounds capacity per caster
Top plate size: 4" x 4-1/2"
Bolt hole dimensions: 2-5/8" x 3-5/8" to 3" x 3"
Bolt size: 3/8" (hardware not included)
Mounting height: 5-5/8"
Tread hardness: 70 +/- 5 Shore (A) Durometer
Quality casters featuring bright zinc plating, 1/2" diameter axle bolt and grease fittings. With double ball bearing heat-treated raceways, and 5/8" bolted kingpins, these casters are ideal for dollies, platform trucks, shop floors, warehouse carts and freight terminals. Series #30 medium heavy duty casters are well-suited for food service carts, hotel housekeeping carts, and industrial and commercial equipment. Also ideal installed on drywall carts, welding carts, and wall panel carts.