6" Polyurethane Cast Iron Hub Fixed Caster, Plate Mount
These heavyweight fixed casters feature a polyurethane tread molded to a ast iron hub with roller bearings. They offer very high weight capacities, provide good floor protection, are resistant to most chemicals and contain a grease fitting in the hub for easy maintenance. The roller bearing makes these very easy to roll under load and their overall design makes them very durable. These 6" casters have a 4-1/2" x 4" plate and 880 lbs. capacity.