Electro-Hydraulic Rotary Actuator
HSX Electro-Hydraulic Rotary Actuators combine self-contained hydraulic power with a heavy rack-and-pinion or scotch-yoke rotary transmission. Delivering immense quarter-turn (90° or 120°) torque for butterfly valves, ball valves, and heavy louver dampers with rapid fail-safe spring return capabilities.
Model Series & Engineering Parameters Heavy Quarter-Turn Drive
| Model Series | Rated Torque (Nm) | Spring End Torque | Rotation Time | Motor Power (kW) | Flange Standard |
|---|---|---|---|---|---|
| ERA-1000 | 1,000 Nm | 600 Nm | 2 – 8 s | 0.75 kW | ISO 5211 F10 / F12 |
| ERA-3000 | 3,000 Nm | 1,800 Nm | 3 – 10 s | 1.50 kW | ISO 5211 F14 / F16 |
| ERA-8000 | 8,000 Nm | 5,000 Nm | 4 – 15 s | 2.20 kW | ISO 5211 F25 / F30 |
| ERA-20000 | 20,000 Nm | 12,500 Nm | 5 – 20 s | 4.00 kW | ISO 5211 F30 / F35 |
| ERA-50000+ | 50,000 – 85,000 Nm | 32,000 Nm | 6 – 30 s | 7.5 – 15 kW | ISO 5211 F40 / Custom |
Ordering Nomenclature Guide: ERA - [Torque Nm] - [Action: DA/SR] - [Fail: FC/FO/FL] - [Ex-Proof].
Immense Quarter-Turn Hydraulic Force
High breakout torque perfectly matching industrial valve torque curves.
High Breakout Scotch-Yoke Torque
Provides maximum torque at 0° and 90° stroke ends, matching the seat seating and unseating torque demands of heavy valves.
Sub-2-Second Emergency ESD Trip
Heavy internal coil spring or hydraulic accumulator drives valve into fail-safe position in under 1.5 seconds.
Stepless Servo-Hydraulic Modulation
Integrated proportional servo valve provides ultra-precise 4-20mA position control with zero hunting.
Compact Monolithic Enclosure
Self-contained oil circuit eliminates external hydraulic piping, reducing installation footprint by 60%.
Proven in Severe Plant Environments
Delivering high thrust and zero-drift actuation across critical heavy industrial facilities.
Turbine Steam Extraction Valves
Fast-closing non-return check valves and emergency trip isolation.
Blast Furnace Gas Mainlines
Heavy butterfly valves and goggle valve quarter-turn drives.
Hydropower Penstock Butterfly
Turbine inlet isolation valves with gravitational counterweight trip.
Offshore Gas Emergency Shutdown
High-pressure pipeline ball valve emergency ESD actuation.
Request Technical Quotation & Sizing Proposal
Submit your required parameters, operating duty, or project drawings for Electro-Hydraulic Rotary Actuator. Our export engineering team will review your specifications and provide an official quotation within 24 hours.