Energy Saver Polyon wheels have a crowned polyurethane tread bonded to a solid, heavy-duty cast iron core. The combination of a crowned tread and heavy core offers higher weight capacities, durability, and greater mobility than standard Polyon wheels. Optional precision ball bearings and tapered roller bearings require less effort to start up and maintain a rolling load. They also generate less friction heat and may prolong the life of the wheel. These wheels provide good floor protection and quiet rolling. Available in dark blue on black, they have a durometer of 95 Shore A (+/-5) as well as a temperature range of -40° F to 180°F.
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