Made of thermoplastic materials, BNL bearings are all lightweight, have low inertia, are water-resistant, non-magnetic and need no lubrication. We use a range of materials to meet a variety of application requirements, from room temperature operation and immersion in water, to high operating temperatures and significant chemical exposure. Our most commonly used materials are below.
Acetal / Polyoxymethylene (POM)
Most of our products are made from Acetal. This is a widely used engineering plastic that is dimensionally stable when subjected to a range of loads, temperature fluctuation and fluids. It has excellent abrasion and fatigue resistance and low moisture absorption. It has a low co-efficient of friction delivering good long-term wear performance.
Polypropylene (PP)
Polypropylene offers excellent chemical resistance, especially to acids, alkalis and alcohol. It has good fatigue and impact resistance. It is also lighter than water and has low moisture absorption.