Transmission Chain cranked link chain - heavy duty Rooler chain - medum duty Roller Chain - Medum Duty Transmission chains are used to transfer light and medium power from the engine gearbox to the moving gears. Table : Roller Chain - A Type Table : Roller Chain - B Type up Cranked Link Chain - Heavy Duty Cranked Link Chain - Heavy Duty These chains are used in driving sets to transmit power in heavy mode and high torques. Table: Cranked Link Chain up