The trolley is one of the basic elements of monorail and crane equipment. Long life and dependable service are absolutely essential. All parts of the completed Louden trolley, including wheels, bearings, yokes, loadbars and swivel fittings have been designed and constructed from proven materials to meet the most exacting requirements. Designed for maximum strength and ease of operation, Louden trolleys are built to carry the specified weight and to move the load with a minimum of effort. Since trolleys in most monorail and crane systems must withstand hard, rugged service, Louden trolleys have been engineered for durability under a wide range of operating conditions.