The RWM Caster's 70 Series features a 2" wide wheels that are equipped with either 3/4" roller bearing, rotating on a 3/4" hardened and ground spanner, annular bearing, or a delrin/plain wheel bearing. 2-1/2" and 3" wide wheels are equipped with either a 1" I.D. straight roller bearing, rotating on a spanner bushing, 3/4" I.D. tapered bearings that rotate on the axle, or precision ball bearings.
This component's raceway design showcases a 2-3/4" diameter with 1/2" carbon steel balls. Load and thrust are accommodated by the patented Kingpinless™ design. The patented offset precision-machined raceway exerts radial force evenly, where there is full contact between the ball bearing and the raceway.
RWM's structural construction adds more mass at key points. This results in thorough heat treatment, and provides additional strength and combats brinelling into the core material.