Rotork Gears Series IB operators are Multi-turn devices intended for the operation of gate globe sluice and penstock valves. These gearboxes are suitable for manual and motorised applications. Torque range up to 8 135 Nm. Thrust range up to 1 557 kN. Totally enclosed gearing. Grease filled for life. Removable output sleeve. Input flanges to suit electric actuators.