The testing sector is a multi-faceted and sophisticated field. High speeds, frequencies, accelerations - good to know that Hänchen cylinders of the 320, 300 and 120 series always keep up. There are many factors to be considered when selecting the right test hydraulic actuator.
We have made this easy for our customers. Because Hänchen's complete service ranges from personal consulting to the interactive product configurator HÄKO. From the planning phase to the start-up.
From individual hydraulic cylinders, test actuators and clamping devices to entire drive systems including documentation. From standard applications to custom-made special solutions. Decades of experience will help us find the perfect solution for you.
Read more about high quality hydraulic cylinders by Hänchen.
The test actuators convince with their stability and high inherent stiffness. They are suitable for high speeds and can reliably bear high lateral forces.
Thanks to the elaborate sealing and guiding system, Hänchen hydraulic cylinders don't need leak oil pumps.
The working areas of the test hydraulic actuator can be designed individually for the respective requirements. This saves acquisition and operating costs for the required periphery and increases the energy efficiency, e.g. with regard to the system's energy input and cooling power.
Switching between different test setups simply, quickly and cost-efficiently: mounting elements and accessories such as spherical rod eyes, integrated position transducers, force transducers, mounting plates, accumulators or control valves fit hydraulic cylinders with different eliminating extra purchases – optimal utilization of the existing test environment.
The performance map of a hydraulic drive describes the dynamic movement of a hydraulic servo actuator in a sine wave. Depending on the cylinder design, different performance classes can be reached.
Your applications aren't that challenging? Then our servo hydraulic actuator series 120 and 300 are just right for you. These are industrial hydraulic cylinders in typical Hänchen quality, of course – high surface quality, geometrical accuracy of the component parts, and coordinated sealing elements – for highest technical requirements and safe, reliably controlled drives. Slim test cylinders for simpler test tasks.
Double-rod cylinder series 320
Double-rod cylinder series 120 and 300
Single-rod cylinder series 120 and 300
Especially important for designing servo actuators for test systems:
Taking into account the lateral forces acting on the piston rod, and a cushioning to protect the cylinder.
An important point to be considered when designing servo hydraulic test actuators is the ability to bear lateral forces or side loads acting on the piston rod. Beside the diameter, the elastic curve of a piston rod under lateral forces depends above all on the stroke length, the free piston rod end and the stroke position. So, the admissible lateral force in the retracted end position will always be higher than in the extended position.
For the exact lateral force curves for every dimension, please use our Hänchen configurator HÄKO at >> Test cylinders >> Equipment
Every servo actuator of the 320 test cylinder series is equipped with an emergency cushioning in front of every end position. This serves to protect the cylinder.
The length of the emergency cushioning is included in the stroke. The actual stroke without emergency cushioning is called the effective stroke.
|25||28 – 45||strong||3 – 23||4 – 35||50 – 170|
|30||34 – 55||strong||4 – 35||6 – 53||50 – 220|
|40||45 – 70||strong||7 – 54||11 – 83||50 – 270|
|50||56 – 80||strong||11 – 64||16 – 98||50 – 450|
|63||70 – 110||strong||15 – 134||23 – 204||50 – 450|
|80||90 – 120||slim||28 – 132||43 – 201||50 – 450|
|80||90 – 150||strong||28 – 266||43 – 405||50 – 450|
|100||110 – 150||slim||35 – 206||53 – 314||50 – 450|
|100||110 – 175||strong||35 – 312||53 – 518||50 – 450|
|125||140 – 175||slim||
66 – 219
|100 – 377||50 – 450|
|125||140 – 200||strong||66 – 402||100 – 613||50 – 450|
|160||180 – 220||slim||112 – 376||171 – 573||50 – 450|
strong: massive construction (e.g. vertical installation)
slim: lighter construction (e.g. horizontal installation with spherical rod eyes)
A dynamic test environment requires free-moving, low stick-slip hydraulic cylinders. Hänchen offers two test cylinder designs with especially low friction. High production accuracy with very little guide clearance guarantees wear-free use and thus a long service life. You'll find further information on the design of the pistons sealing system here.
|Guiding system cover||PTFE wear rings
= contact guiding element
|Sealing system cover||Floating gap seal, functional oil
seal, wiper ring
|Sealing system piston||no seal with throttle gap|
|Guiding system in cover
= no-contact guiding elements
|Sealing system on the cover
||Functional oil seal,
|Sealing system on the piston
||no seal with throttle gap|
In both designs, the contacting functional oil seal is not under pressure. This makes the residual friction in the entire pressure area constant and very low. The leak oil is discharged to the tank through the overflow oil connection without pressure, it should not be suctioned off.
Guide values apply for chamber pressure (operating pressure)
of 210 bar, fluid ISO VG 46 at 55°C
Guide values apply for supply pressure (system pressure)
of 280 bar, fluid ISO VG 46 at 55°C