Helac Corporation offers a diverse line of helical, hydraulic rotary actuator to meet our customers' unique application requirements.

The L-Series rotary actuators offer large diameter drilled and tapped shaft flanges and integral, composition bearings and are commonly used for applications where load-bearing and intermittent positioning are the primary requirements. This actuator line is available in compact configurations and can carry tremendous radial, thrust and moment loads without the need for additional external bearing support.

The T-Series rotary actuators feature a one-piece through shaft and internal tapered roller bearings and are commonly used for applications where torque generation and higher frequency cycling are the primary requirements. The T20 Series can carry substantial radial, thrust and moment loads without external bearings while, at the same time, facilitating smooth operation and low breakaway pressures.

Hydraulic Rotary Actuator Quick Reference Guide Design Features Helac Corporation's Helical Rotary Actuators Alternative Industry Products*   L10 Series L20 Series L30 Series T20 Series Rack and Pinion Actuators Vane Actuators Standard Configurations Varies by manufacturer Varies by manufacturer Torque Range in-lb 1,700 - 25,000 4,500 - 15,000 17,000 - 740,000** 25,000 - 60,000 Varies by manufacturer Varies by manufacturer Nm 190 - 2,825 508 - 1,690 1,920 - 83,600 2,830 - 6,780 Varies by manufacturer Varies by manufacturer Pressure Rating psi 3,000 3,000 3,000 3,000 3,000 3,000 bar 210 210 210 210 210 210 Bearing Capacity High High High High Low Low Internal Leakage None None None None None High Standard Rotations 180, 360 180 180, 360 200, 220 90, 180, 360 100, 280 Shock Resistance High High High High Low Low Backlash Low Low Low Low Low None * The information provided is based on typical data given by manufacturers of these products. It is conceivable that these products have been or could be designed with substantially different characteristics. ** High torque output of 740,000 in-lb for select models only. Higher torque output available through custom design.