Polyurethane on Polypropylene

Medium heavy duty casters are designed with a kingpin in the swivel with a double row ball bearing for smooth turning. These casters have 4-1/2″ x 6-1/4″ top plate increasing the load capacity on these casters. These wheels are composed of injection molded polyurethane treads which are mechanically bonded to a polyolefin core. The polyurethane tread is molded in, around and through a ribbed extension of the core to prevent debonding. These wheels withstand exposure to many chemicals, solvents, water, and acids. They are especially suited for use in Research Laboratories, Hospitals, Food Service, Schools, Bakeries and other Institutional applications.

Caster Features:

• Temperature Range: -45F to -180F
• Hardness (max. 300lbs capacity models): 45(±5) Durometer Shore D scale
• Hardness (max. 1700lbs capacity models): 55(±5) Durometer Shore D scale