Aluminum 1/4 Turn Gearboxes for Manual Operation
High strength aluminum alloy construction with 3 frame sizes up to 9000 in.-lbs. (1,000 Nm) of output torque. This all-purpose product line has long been a favorite of butterfly valve makers.
Output torques have a safety factor which allows the actuator to withstand occasional overloads of twice the rated torque. Mechanical efficiency is high which reduces the required input effort and small,space-saving handwheels can be used. Two self-locking adjustable stopscrews give ±5°adjustment at each end of 90°travel and are sealed after adjustment.
The enclosure is fully weatherproofed using 'O' rings. All rotating parts are grease lubricated for life. External aluminum surfaces are protected with chromate finish;other protective coatings are available to suit particular applications.
Outline drawings for standard units are found below in pdf format. Please inquire for 2D and 3D CAD files.