Heavy Duty Scotch Yoke Electro-hydraulic actuator, symmetrical and inclined, with motion from 0 to 90°.

  • Power supply: autonomous hydraulic system, filtered hydraulic oil.
  • Double and stop adjustments, open and closed position: 0 ± 5° 90 ± 5°.
  • Torque output: the hydraulic system can be set according to customer needs Temperature: standard -30 to +100°C (-22 to +212°F), high -20 to +150°C (-4 to +302°F), low -55 to +80°C (-67 to +176°F)
  • Welded steel, epoxy powder coated, red (RAL 3020) or according to customer requirements.
  • Interface: ISO 5211 / DIN3337 and NAMUR valves, VDI / VDE3845 and NAMUR top mounted accessories

Technical data



  • Made of welded carbon steel.
  • Bidirectional double-stop adjustments with integrated adjustment, which allow adjustment from 85° to 95°. Modulated and subjected to a pressurized area for safe operation.
  • Actuator made of welded steel, equipped with two self-lubricating bronze bearings to improve alignment.
  • Steel pin, equipped with bearings with two guide bushes, to ensure symmetrical motion. Two chromed steel bars guide the actuator during the travel across a steel carriage.

Hydraulic Cylinder

  • Made of carbon steel.
  • Fully welded for better pressure resistance.
  • Maximum pressure 210 bar.
  • Double Acting (DA) available in single or double cylinder.

Spring cylinder

  • The spring is located inside the steel cylinder.
  • The spring is sized with respect to the oil supply pressure.
  • The spring cylinder is welded to the flange fixed to the central body.
  • The design allows the cylinder to be completely removed with the compressed spring safely inside.

Surface treatments

  • Actuator and carriage are phosphate-plated;
  • The entire external surface of the actuator is sandblasted and painted with epoxy powder, RAL3020 as per standard, another color on request.

Power Pack

  • Functional Power Pack Unit
  • All important components (motor, pump, hydraulic solenoid valve, hydraulic tank, etc.) are protected and included in a steel box (stainless steel on request).
  • Manual override of the pump installed in the Steel Box.
  • The Power Pack design can be realized according customer dimensional needs.


Attuatore elettro-idraulico Scotch Yoke Heavy Duty
1Hydraulic ActuatorDouble Acting / Spring Return
2Power PackSteel / Stainless Steel
3Electronic CabinSTD / Exd
4MotorSTD / Exd
5Hand pump Lever SwitchSTD / Exd
6Hand Pump/
7Hydraulic Reservoir/
8Oil Level IndicatorSTD / Exd
9Oil Reservoir Filling/

Areas of expertise