Albion 94TRL Super Duty Casters utilize a precision roller bearing load and thrust swivel section. The swivel load raceway uses a 5-inch outside diameter precision tapered roller bearing. The thrust raceway uses a 1-1/4-inch tapered roller bearing. Combined with AISI 1405 drop forged steel top plate and yoke base, 94TRL casters have a long life with large weight capacities, perfect for very rugged applications.