Eckart_PSM2-Rotary-actuator-WZ_30fs | © Eckart GmbH - Germany

Rotary actuator PSM2

Low weight and low space requirement

at a glance

    • angle of rotation up to 360° or more
    • compact and robust
    • wear resistant
    • adjustable drive shaft datum
    • compatible thread adapter
  • angle adjustment ± 5°

rotary actuator

The PSM2 is a pneumatic rotary actuaor that works according to the principle of the dual curve-roller deflection, and is most suited to applications in small installation spaces and with low weight requirements.



Size5 sizes
max. torque at 6 bar
(87.02 psi)
4 to 78 Nm
(2.95 to 57.54 lb-ft )
Angle of rotationStandard 90°/180°/360° and any intermediate angle
Mediumpercolated, oiled or percolated, oil free compressed air
Operating pressure6 bar (87.02 psi)
max. allowed operating pressure10 bar (145.04 psi)
Installation positionas required
Temperature range-10°C to +50°C (14°F to 122°F)
higher or lower on request
Absorption volume0,15 to 2,60 cm³/1°
(0.009 to 0.16 in³/1°)
max. admissible rotation time per 90° (without load)0,1 to 0,4 s
Weight / kg 90° / 180° / 360°0,8 to 5,9 kg / 0,9 to 6,5 kg / 1,0 to 8,2 kg
(1.76 to 13.01 lb | 1.98 to 14.33 lb | 2.20 to 18.08 lb)
max. radial load FR150 to 900 N
(33.72 to 202.31 lb)
max. axial load FA250 to 1100 N (56.25 to 247.21 lb)

High-quality aluminium alloys and modified plastics are used as materials. As a result of this material combination, the rotary actuator has an extremely low weight. The sizes/operating widths vary, with diameters ranging from 40 mm to 100 mm, and a torque of up to 80 Nm at an operating pressure of 6 bar can be achieved. The maximum operating pressure is 10 bar.

Due to the design of the standard drive shaft with a key hub, it is possible to insert a so-called thread adaptor or a hub adaptor, depending on requirements, which can then be equipped with all manner of connecting profiles, such as gear-shaft, rectangular, hexagonal, cylindrical and polygonal profiles.

Because of its torque, angle of rotation, pressure range, positioning accuracy, stability of position, type of attachment and dimensions, the Eckart PSM2 rotary actuator can be used in a wide range of applications.

The selection and the size depends above all on the demands and the operating conditions under which the rotary actuator is operating. For the planning of special items, it is also important for us to be aware of all technical details.


    • locating pin on the end of the shaft
    • switching elements for angular interrogation
    • manual operation (emergency)
    • another back end of the shaft

Special designs
according to the request of the customer

    • various shaft types, such as DIN5480 gear shaft, gear hub, hollow shaft
    • every intermediate angle
    • switching elements for angular interrogation
    • lake and saltwater resistance


  • Tool change
    Tool change
  • Bending machines
    Bending machines
  • Gate valve control
    Gate valve control
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