Helical Hydraulic Rotary Actuators Series L and T
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Helical Hydraulic Rotary Actuators Series L and T

Helical, Hydraulic Rotary Actuators Series L and T Operating Technology Industries Served: Agriculture Construction Energy Marine Material Handling Military Mining Truck/Trailer and many others Helac’s innovative sliding-spline technology converts linear piston motion into powerful shaft rotation. Each actuator is comprised of a housing and two moving parts — the central shaft and piston. Helical spline teeth on the shaft engage matching teeth on the piston’s inside diameter. A second set of helical splines on the piston’s outside diameter mesh with the gear in the housing. Starting...

Helical, Hydraulic Rotary Actuators Series L and T Features and Benefits For over 50 years, Helac has lead the way in actuator technology and innovation. Our extensive line of compact and powerful rotary actuators offer simple and cost-effective solutions to move, support and position rotating loads in countless applications. Helac actuators are designed to replace multiple components and function as a rotating device, mounting structure and bearing, all-in-one. They feature tremendous torque output and exceptional load bearing capability in compact dimensions. • Powerful: High torque, high...

Helical, Hydraulic Rotary Actuators Series L and T Torque Versus Hydraulic Pressure and Loads The driving torque and holding torque are approximately linear with hydraulic pressure. As moment loads increase, drive torque may be reduced by up to 15%. Torque, % Rated Torque, % Rated Specifications Reference Guide Straddle Mount Cantilever Mount C Radial Load Radial Load Digital Drawings can be provided in the following formats: .pdf, .stp, .dwg and .dxf. Email request to helacactuators@parker.com or call +1 800 327 2589 (US and Canada), or +1 360 825 1601 (Worldwide). Parker Hannifin...

Helical, Hydraulic Rotary Actuators Series L and T Model Code / Ordering Information Actuator Series Measurement System Housing Configuration Standard Rotation L30: FT Foot Mount FF Front Flange Standard design with internal stop tube to limit rotation - indicates final rotation.*** C Counterbalance Valve*** 0 No Valve T20: FT Foot Mount T30: FT Foot Mount T20: 25, 45, 60 T30: 27 E English System M Metric System ES or MS Custom Design*** H Standard Seals and Bearings S Special Seals and Bearings*** L10: S1 Mounting holes in shaft flange only L20: S1 Mounting holes in shaft flange with...

Helical, Hydraulic Rotary Actuators Series L and T Mounting Options Customized Products Parker Hannifin Corporation can customize our rotary actuators to meet unique application requirements. Custom engineering can range from slight to complete, and is offered to those customers whose actuator needs match our program requirements. Rail Mount Cantilever Mount The load is mounted to the shaft flange and is supported at only one end of the shaft. Cantilever mounting is not recommended for aerial work platforms or other critical and safety-related applications. Clevis Mount Straddle Mount The...

Helical, Hydraulic Rotary Actuators Series L and T Valve Configurations Optional factory mounted counterbalance valves prevent rotation in the event of a hydraulic line failure, control rotation when loads go over center, and protect the actuator against excessive torque loads. L10 with counterbalance valve Hydraulic Schematic of Optional Counterbalance Valve Manufactured from aluminum, the valve blocks are bolted to a flat mounting pad on the actuator housing. Three bolts secure the valve block to the actuator. See specification pages for valve location. L20 with counterbalance valve The...

Helical, Hydraulic Rotary Actuators Series L and T Shaft Flange Drive Torque Model in-lb @ 3,000 psi (Nm @ 207 bar) Housing Flange Holding Torque in-lb @ 3,000 psi (Nm @ 207 bar) Moment Capacity Cantilever Mount in-lb (Nm) Approximate Approximate Displacement 180o Displacement 360o Weight 180o Weight 360o in3 (cm3) in3 (cm3) lb (kg) lb (kg) *L10-9.5 185° Specification charts are for general reference only. Consult drawings for actual values and tolerances. Parker Hannifin Corporation Helac/Cylinder Division Enumclaw, Washington USA

Helical, Hydraulic Rotary Actuators Series L and T D1 Shaft mounting surface diameter in (mm) D3 Mounting flange inside diameter in (mm) F1 Threaded mounting hole, shaft flange in, deep (metric, deep) F2 Quantity of mounting hole, shaft flange F3 Bolt circle diameter, shaft flange in (mm) F4 Threaded mounting hole, housing flange in, deep (metric, deep) F5 Quantity of mounting holes, housing flange F6 Bolt circle diameter, housing flange in (mm) F7 Shaft through-hole diameter in (mm) L2 Overall Length, non-rotating 180o in (mm) L2 Overall Length, non-rotating 360o in (mm) L3 Shaft flange to...

Helical, Hydraulic Rotary Actuators Series L and T Drive Torque in-lb @ 3,000 psi (Nm @ 207 bar) Holding Torque in-lb @ 3,000 psi (Nm @ 207 bar) Moment Capacity Straddle in-lb (Nm) Moment Capacity Cantilever in-lb (Nm) Displacement 180o Approximate Weight in3 (cm3) lb (kg) Specification charts are for general reference only. Consult drawings for actual values and tolerances. Parker Hannifin Corporation Helac/Cylinder Division Enumclaw, Washington USA

Helical, Hydraulic Rotary Actuators Series L and T D1 Shaft and endcap flange diameter in (mm) F1 Threaded mounting hole, shaft flange in, deep (metric, deep) F2 Quantity of mounting hole, shaft flange F3 Bolt circle diameter, shaft flange in (mm) F4 Clearance hole for shaft through-bolt (S1) in (metric) F6 Shaft center threaded hole in, deep (metric, deep) F7 Threaded mounting hole, endcap flange (S2) in deep (metric deep) F9 Bolt circle diameter, endcap flange (S2) in (mm) H1 Overall height (excluding valve) in (mm) H4 Overall height (with valve) in (mm) L2 Overall Length, nonrotating in...

Helical, Hydraulic Rotary Actuators Series L and T Shaft Flange Endcap Flange L30 Foot Mount Specifications Model Drive Torque in-lb @ 3,000 psi (Nm @ 207 bar) Holding Torque in-lb @ 3,000 psi (Nm @ 207 bar) Moment Capacity Cantilever Mount in-lb (Nm) Moment Capacity Straddle Mount 180o in-lb (Nm) Moment Capacity Straddle Mount 360o in-lb (Nm) Specification charts are for general reference only. Consult drawings for actual values and tolerances. Parker Hannifin Corporation Helac/Cylinder Division Enumclaw, Washington USA