Servo Hydraulic Test Actuators

Hydraulic Servo Actuators


Raagen servo actuators are commonly used in construction testing, automotive testing, and material component testing.


Raagen hydraulic servo cylinders are one of the essential equipment of any laboratory and facility. They can precisely perform a wide range of tests including low and high cycle fatigue tests, crack expansion testing, fracture toughness testing, seismic testing, automotive parts testing, vehicle testing, rail and bogie fittings testing, and other dynamic testing applications. Each system can be meticulously configured with the appropriately sized servo valves, manifolds and hydraulic power pack to fulfill user and test requirements. Raagen hydraulic servo actuators are equipped with the advanced features of Doli EDCi controllers, Materials Testing software and unique fatigue rated load cells. Test&Motion Dynpack dynamic testing software has a convenient interface for performing many dynamic tests. Test software modules specific to a wide variety of applications allow testing of different standards. Raagen dynamic test actuator systems, when combined with the appropriate software module and appropriate accessories, are also ideal for a variety of static tensile tests, compression tests, bending tests, peel tests, tear tests and friction tests.


Raagen offers advanced actuator system solutions for all types of materials testing, including monotonic, static, quasi-static and cyclic testing. Raagen offers hydrostatic dynamic actuators as turnkey solutions to meet current testing standards.

These solutions include the following features as standard:

  • Floor type or desktop, rigid load frames with different force capacities in wide ranges,


  • Suitable test benches (portal frames) for actuator positioning in systems where actuators positioned in different shapes and angles are used,


  • User-friendly, configurable static and dynamic materials testing software with powerful test design capabilities,


  • High resolution, synchronized digital controllers with high data acquisition rates,


  • Multi-channel, configurable dataloggers suitable for reading and storing sensors used during tests with high precision,


  • Robust, high-performance test grips and test fixtures for servo actuators.


Features of Raagen Hydrostatic Linear Actuators


Raagen Hydrostatic Actuators are used for precise control of high frequency movements and forces.

They are double-ended, linear force generating actuators operating under the control of sensitive servo valves.

Test actuators are specially designed for the dynamic testing of structures and components with low friction, low wear and high lateral loads.

Hydrostatic pressure centering bearings are available for high speed and low friction operation under conditions subject to high lateral loads.

Raagen test cylinders have a large diameter, one-piece, chrome-plated piston rod. In this way, it provides strength and lateral rigidity.

These actuators feature dynamic (fatigue rated) designs to precisely provide sustained forces over millions of cycles. Helping to maximize your uptime and minimize total cost, you can expect highly reliable performance over a long operating life.


 Components of Raagen Hydrostatic Actuator Systems:


  • High-tech dynamic load cell with high sensitivity from 0.01% to 0.5%.
  • High response or very high response servo valves with flow rates suitable for the capacity and flow rates of hydraulic power units and manifolds.
  • High precision position measurement sensors (selectable in the range of 0.1 µm-1 µm).



 Raagen Hydrostatic Test Actuators are commonly used for the following test applications:

  • Dynamic component fatigue tests
  • Structural fatigue tests
  • Durability tests of vehicles and automotive parts
  • Aerospace structural tests
  • Seismic tests (earthquake simulators)


Contact us now to take advantage of the privileges of the systems that Raagen has designed and produced to suit your exact needs.


Automotive Test Application Areas of Actuator Systems

Wheel Tests

Vehicle Bumper Tests

Fuel Tank Tests

Complete Vehicle Tests

Steering Lock Tests

Vehicle Control Panel Tests

Front and Side Airbag Tests (backrests / filling)

Seat Belt and Vehicle Accessories Tests

Wheel Airbag (dashboard) Tests




 ECE R11, ECE R12, ECE R14, ECE R17, ECE R21, ECE R42, ECE R46, ECE R55, ECE R58, ECE R62, ECE R66, ECE R73, ECE R80, ECE R93, ECE R105


Doli EDC Controller T&M Materials Testing Software

Doli EDCi series electronic controllers can automatically recognize and calibrate sensors such as load cells, temperature sensors, LVDTs, strain gauges, I/O’s, elongation measurement sensors and vibration sensors.

It has a data sampling rate of 1000 Hz to 10 000 Hz according to the model selected from each channel per second.

Additional channels and cards can be added to the control system.


 Test&Motion Plus Dynpack Test Software

Test&Motion Software DynPack software is an advanced dynamic testing software module for controlling dynamic testers. Records and graphs data up to 10 kHz from all channels individually.

DynPack can be integrated with one or more EDCs at the same time. Thus making it possible to control multi-axis systems.

Dynamic testing software is suitable for dynamic testing applications in triangular, sinusoidal, ramp, sweep, sawtooth waveforms.

The user enters the test frequency, number of cycles and amplitude values ​​into the software via T&M+ Dynpack and the tests continue without the need for an additional operator intervention.

Compatible with Windows 2000 / XP / 7/10.

It has an oscilloscope window where actual values ​​and adjusted values ​​can be viewed instantly.

It has convenient menus to set functions such as cycle preload setting, cycle counter, test end criteria, limit value settings.

It has PID settings menu.

It allows the simulation of fatigue tests determined by the Import data feature.

The test software is delivered with the original dongle with Doli license.

Real-time load, displacement, deformation, time and external user-defined parameters can be presented with the test software, viewed graphically and all these data can be transferred to the graphic axes.

It has an overload protection system.

It has an automatic break detection system.

User defined methods can be created. It is possible to create 30 user-defined formulas and/or parameters based on force, displacement and deformation. This number can be increased with additional modules.

These parameters are recognized and reported both during the test control and at the end of the test.

The user can graph the values ​​he chooses on the x and y axes and report these graphs.

The system has 10 different language options.

The units of the sensors measured in the system can be selected for monitoring and control.

Test procedures can be saved as a method file and recalled to the system.

The test files can be saved in program format with the graphic data, the program can be called again, the graph can be examined again and new calculations can be made to the program over the previous tests.

Limits are defined for each sensor read and controlled in the system, the engine can be stopped or the system status is fixed in case of exceeding the limit according to user selection.

Thanks to the TMB screen, the system has the ability to define new users, sensors, results and make calculations with various "C+" based codes.

The system is suitable for long-term tests and the frequency of data acquisition, recording and display can be determined by the user.