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Helical
Rack and Pinion
Rotary Actuators - rack and pinion
The rack and pinion type actuator, in order to transmit the same torque, is required to be much bigger in size than the rotary vane motor.
Generation and transmission is carried out via a rack piston which is positioned transversely to a drive journal fitted with a pinion.
The resulting shear forces that occur between the gear teeth and the opposing back of the piston are hydraulically balanced, or supported by roller bearings depending on the design.
These actuators are particularly suitable for high torques.
DEK
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Working pressure up to 3,000 PSI |
Torque up to 352,000 IN-LBS |
Flange or foot mounting |
Angle of rotation 720° |
Preferred applications: |
Cement works, tire industry |
DEK1
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Working pressure up to 5,075 PSI |
Torque up to 1,540,000 IN-LBS |
Flange or foot mounting |
Angle of rotation 360° |
Preferred applications: |
Power plants, steel industry |
DZK
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Working pressure up to 5,075 PSI |
Torque up to 3,080,000 IN-LBS |
Flange or foot mounting |
Angle of rotation 360° |
More than 360° of rotation on request |
Preferred applications: |
Power plants, steel mill, Helm or rudder steering in boats and ships |