Hydraulic Actuators

Rotary Actuators ST

High performance actuators for industrial applications

  • Standard torque range of up to 50.000 Nm
  • Higher torque as special design on request
  • Rotary angle of 90° up to 360°
  • Different rotary angles on request.

  Special Features

  • STD = with cushioning
  • STE = with mechanical adjustable stops
  • STED = with adjustable stops and cushioning
  • STF = with flange connection
  • Also availabe with second shaft and electronic position Transmitter

  Advantages Of Pleiger Rotary Actuators

  • High torques in compact design
  • Equal torque in both operating directions
  • Constant torque along the complete rotary angle
  • Low friction caused by hydrostatic compensation
  • Stable load fixing without additonal brake devices

Serial-ST

Rotary Actuators STK

Direct mounting type for ball valves and butterfly valves.

  • Torque of up to 50.000 Nm
  • Maximum operating pressure of 150 bar
  • Rotary angle of 90 – 100° depending on manufactured size
  • With mechanical adjustable stops
  • Connecting dimensions according to DIN ISO 5211

  Special Features

  • With mechanical, hydraulic or electronic position indication
  • With mechanical or hydraulic emergency operation equipment
  • With modular hydraulic control devices
  • For submerged applications

Advantages Of Pleiger Rotary Actuators

  • With hollow shaft and flange for compact assembling
  • High torques in compact, closed design
  • Equal torque in both operating directions
  • Constant torque along the complete rotary angle
  • Service- and maintenance-friendly construction

Serial-STK

Rotary Actuators STKG

Direct mounting type for ball valves and butterfly valves.

  • Opening -/Closing Torque of 4.000 Nm (125bar)
  • Maximum operating pressure of 150 bar
  • Rotary angle of 90 – 100° depending on manufactured size
  • With mechanical adjustable stops
  • Connecting dimensions according to DIN ISO 5211

  Special Features

  • Single-acting with spring return
  • Fail-Safe
  • With mechanical, hydraulic or electronic position indication
  • With mechanical or hydraulic emergency operation equipment
  • For submerged applications
  • With modular hydraulic control devices

  Advantages Of Pleiger Rotary Actuators

  • With hollow shaft and flange for compact assembling
  • High torques in compact, closed design
  • Service- and maintenance-friendly construction

Serial STKG with spring return and position indicator

Pleiger STKG fail safe esd antrieb federpaket

Application examples

Here you will find some examples of applications for Pleiger actuators!

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