This 6" x 2" Kingpinless Dual Wheel Polyurethane Elastomer Swivel Caster is made of liquid cast polyurethane. They are easy to push (designed for medium loads) with easy start-up, are capable of withstanding shock loads and abusive conditions. They are durable and resist abrasions, cracking and chipping, and are floor protective and non marking. Ideal uses for this wheel are tow lines, freezers, and other continuous use applications.
For more info, check out Caster Wheel Types.
Kingpinless caster rigs are different from standard kingpin caster rigs in that the swivel section is held together without a rivet or nut and bolt kingpin. Kingpinless caster rigs are held together by a single row of ball bearings that are contained by a full contact interlocking swivel raceway design. Kingpinless casters are ideal for towing, conveyor, maintenance/utility carts, tow lines, drag lines and more robust applications seen in industrial environments.
For more info, check out Caster Rig Types.