Polyurethane is a more recent material than natural rubber, developed by Dr. Otto Bear in the 1930s. Polyurethane is a synthetic (man-made) material and was developed due to wars and political sanctions that restricted the availability of natural rubber in the past history. Today polyurethane comes in various grades and forms and is widely used in polyurethane casters. For more information, the background on polyurethane wheels can be found at the following link:
- In general, polyurethane caster wheels are 30-50% more expensive than rubber casters. It is therefore important to choose the best material keeping in mind the commercial cost of selection.
- As discussed above, both rubber casters and polyurethane casters have advantages, both providing each other with unique properties.
For example, it is common to find equipment used outside or on rough surfaces equipped with rubber casters, while on a smooth floor surface equipment commonly used indoors is included but polyurethane casters are applied.
This is mainly due to the floor surface, which is an important consideration for all caster wheels Australia choices. Natural rubber casters provide more grip, better traction and softer ride on rough terrain than polyurethane casters. Polyurethane casters, on the other hand, offer higher load capacity, wear resistance and roll resistance compared to rubber casters.
Roll resistance is an important feature for most applications. The lower the roll resistance, the easier it is to maneuver the tool, reduce operator fatigue and increase the efficiency of the tool. Polyurethane casters generally have lower roll resistance than rubber casters. It provides a more homogeneous material than rubber, mainly due to the synthetic nature of polyurethane. The highly consistent mix of materials provides a constant level of rolling friction.
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Author : John Smith |
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