Wheel hardness and resilience The hardness of the rubber wheel is usually between 67 and 75 degrees, and the hardness is relatively low; Polyurethane wheel hardness is as high as 83-95 degrees. Under the premise of ensuring safety, the use of polyurethane 4 Inch Caster Wheels casters not only has large bearing capacity, small rolling resistance, but also ensures a certain buffering capacity.
More importantly, the wheel hardness and resilience of polyurethane materials can be adjusted according to customer requirements and use environment. Caster raw materials Rubber wheel: easy to pollute, low production efficiency, raw materials can be mixed with recycled materials, there will be odor; Polyurethane casters: high requirements on the tread, using raw materials, no odor, can not be mixed with recycled materials.
Aging resistance When rubber casters are exposed to organic solvents for a long time, they are prone to swelling, and the tear strength and the ability to resist collapse and blockage are also weakened; Even if the polyurethane casters are exposed to organic solvents for a long time, the properties remain unchanged and will not be corroded.
