12" x 4" Rigid Plate Caster with Ductile Steel Wheel

Ductile steel is a composed of a combination of special alloys that give it higher weight capacities than cast iron; while being more economical than drop forged steel. Also referred to as malleable iron; material may flex rather than cracking or breaking when submitted to an extreme shock load. Features an extra thick walled, heavy-duty core, hub and tread face. Roller bearings are standard, with precision & tapered bearings as an option.

Idea for use on rough surfaces and has good rolling resistance under any condition.

The D4/R4 Series offers matching extreme duty swivel and rigid kingpinless casters with capacities up to 40,000 lb. Constructed from hot forged ASTM1045 steel with 1/2″ thick double-welded legs and a 1-1/4″ Grade 8 axle bolt. Features a forged 5/8″ thick swivel head with a 7″ precisely machined kingpinless raceway using 3/4″ hardened ball bearings. The swivel casters feature a forged 5/8" thick swivel head and a 7" precisely machined kingpinless raceway of 3/4" hardened ball bearings.