Are the plastic gravity rollers available in heavy duty form?
A. Our plastic gravity rollers have been developed over many years to allow free rotation, no lubrication and easy cleaning. These factors are achieved by using plastic races in the bearings which restricts the load rating and the mistreatment that they can sustain. Not all plastic rollers made by other manufacturers are the same although their rollers may look similar. Often there is a steel raced semi-precision bearing hidden behind the plastic end cap housing. This means that they can take more abuse but will suffer corrosion, will have a higher inertia and will create more noise than a plastic raced bearing. If a heavier duty roller is required for a larger load or to survive mistreatment, the steel gravity roller range can offer a solution.
