Mast rollers

Mast rollers (supporting rollers) are a special design of ball- or cylindrical roller bearings with a reinforced outer ring. In contrast to rolling bearings support rollers are not incorporated into a casing but rather run with their outer ring on a straight or curved guide rail. The strength of the outer ring as well as the rolling elements is important for their load capacity. Besides a good seal against dirt entering from the outside and loss of grease from the inside a high load capacity is of great importance of durability