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Servo-hydraulic testing actuators

Zwick's servohydraulic testing actuators feature rugged, durable construction and are used both in servohydraulic testing machines and as single actuators.



Hydraulic power packs

Servo-hydraulic test equipment requires a pressurized oil supply with an extremely high level of cleanliness and constant pressure. Pressure fluctuations must be minimal at all times, even with very irregular oil demand from the consumer.


Hydraulic distribution unit 

Hydraulic distribution unit

The hydraulic distribution unit is the electrically operated switching device in servohydraulic testing systems. It connects or disconnects the hydraulic pressure for a servohydraulic testing actuator or servohydraulic testing machine.


Servo valve 

Servo valves

Servo valves are used in closed control loops for high-accuracy control of hydraulic energy, with multi-kilowatt hydraulic power controlled by input signals in the milliwatt-range.

Hydraulic pipelines 

Hydraulic pipelines

Hydraulic pipelines are used when the distance between pressure generator and consumer is too great for hoses to be used. As a general guide, a pipeline should be used for runs of 10 - 12 meters and above. In contrast to hoses they do not have to be replaced at regular intervals.


Hydraulic grips for servohydraulic testing machines

Particularly severe demands are placed on specimen grips used with servohydraulic testing machines. They must not be fatigue-critical and must be suitable for alternating load tests, optimized for weight, easy to operate and capable of gripping a wide range of specimen geometries and widely varying materials.


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