Service Caster #20 Series 1-1/4 inch expanding stem swivel casters with 4 inch semi steel wheel and posi lock are a versatile caster choice. Featuring a zinc plated finish and double heat treated ball bearing raceways, these casters are ideal for light and medium duty racks, carts, equipment, and shop projects.
Semi-steel provides a long lasting, high capacity wheel capable of easy rolling under heavy loads. These cast iron based wheels feature a machined hub and wheel face. An economic choice over steel, semi-steel wheels are abrasion resistant and rugged.
Semi-steel wheels are able to perform in temperatures up to 600 ° F.
Wheel size: 4" x 1-1/4"
Wheel hardness: 70-80 Shore D Durometer
Expanding Stem Size: 1-1/4" x 2-11/16”
Mounting height: 4-1/8"
300 pound capacity per caster Wheel rotates on sleeve bearing (Use for manual speeds; 3 mph.)