The Difference Between Polyurethane Wheel And Rubber Wheel

Before the Second World War, rubber has always been the material of choice for the wheel manufacturing industry, because the material is naturally easy to obtain, low cost and widely favored by countries all over the world. However, during the Second World War, rubber and other materials were in short supply. After repeated research and exploration, people finally found a more cost-effective material - polyurethane. The wide application of polyurethane materials not only alleviates the shortage of rubber and other materials, but also compensates for some defects of rubber casters. Do you understand the advantages and disadvantages of the two?

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.

 Wheel load

Heavy-duty rubber casters have a load of 160-230kg, and have poor resistance to cracking and tearing;

The load capacity of polyurethane casters is about twice that of rubber wheels. It has excellent crack growth, tear resistance and chipping resistance. Even after 7-8 years, the performance is still good and has good wear resistance. 

 In the current caster industry, compared with rubber wheels, urethane casters such as Swivel Caster Wheel For Production Line and iron core polyurethane casters have obvious properties in terms of load carrying capacity, wear resistance, tear resistance, cutting resistance and rolling resistance. Advantages, its excellent material, high cost performance, widely favored by consumers, and gradually replaced the former position of the rubber wheel.