Track Roller Bearings are designed to withstand heavy rolling or shock loads on track type and cam controlled equipment for automotive, industrial and airframe applications. These are made of materials such as carbon steel, high alloy steel, stainless, aluminum and engineered polymers. It has threaded, non-threaded or eccentric shafts. These are available with cylindrical or crowned outer ring profile. These are constructed from balls, rollers or an economical sector pin design. The track roller outer rings and needle rollers are made from high carbon chrome steel. The exposed surfaces may be cadmium or zinc nickel-plated. These are selectively heat treated to provide a combination of a fracture tough head, ductile shank, and a carburized raceway to provide high load carrying capacity.