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Test Cylinders 101

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Home / Products / Hydraulic Cylinders / Hydraulic Test Cylinder
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Hydraulic Test Cylinders

For over 100 years, Hänchen has supported the test and simulation industry with actuators built for precision and durability. Our servo cylinders cover one of the widest ranges on the market. Choose from lightweight models for simple tests (Series 120/300) to hydrostatic models for demanding, high-frequency applications (Series 320). With patented sealing technologies found nowhere else in the market and highly-honed surface finishes, Hänchen cylinders last for decades in service.  

Series 120 Hanchen Hydraulic Cylinder

Hydraulic Test Cylinder Specifications

One of the largest testing ranges in the market, offering lightweight models for static applications or high frequency cylinders for dynamic testing.

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What Makes Us Different?

large range timeline icon - light gray

Largest Testing Range on the Market

o Offering lightweight servo actuators for static applications and ultra-rigid cylinders for dynamic testing.

12 Sealing Combos for Low Friction and Stick-Slip

Customize your cylinder for static or dynamic loads with patented sealing technology to minimize friction, stiction, and side loads.

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Fast Lead Times with Competitive Pricing

Competitive pricing and fast manufacturing (as quick as 14-18 weeks) compared to popular brands, like MTS.

Product Guide

Test Cylinders 101

Sealing Systems

Applications and Solutions

hydraulic test cylinder hanchen heavy-duty testing cylinder for dynamic applications

Test Cylinders 101

What are Test Cylinders?

Test cylinders are used extensively in the testing sector and can be used for checking the functional safety of systems, component parts or products, for structural testing of airplanes, refrigeration compressors, automobile exhaust systems, or for simulating loads and movements, such as operational profiles and flight profiles.

Product Benefits

  • Patented sealing and guides optimized to your friction and stick-slip tolerance 
  • Machined from a solid block of steel, creating a rigid cylinder construction with bores adjustable to the millimeter
  • Honed, crosshatch finishes designed for smooth acceleration and lasting performance
  • No leakage pump is required as pressure is regulated through venting and leakage ports, reducing energy use and lowering operating costs
  • Welded roundhead distributes stress evenly across the cylinder body compared to a traditional tie-rod design
  • Hydrostatic bearings offered for all sizes, starting at an inch diameter
  • Designed for higher pressure up to 4,640 psi (320 bar), allowing standard components to be used without upsizing your equipment

Stick-Slip in Hydraulic Cylinders

Our Hydrostatic Design

Product Guide

Test Cylinders 101

Sealing System

Applications and Solutions

Hydraulic Test Cylinder Sealing Options

Tell us about your application, and we will help you find the perfect seal. Any solution is possible for your application. We make patented and standard seals for low friction, side loading, high pressures, rotation, fast/slow movement, stroke amplitude, and medium compatibility.

In the following chart, the first row of images and titles denote sealing systems, while the first column on the left denotes guiding systems.

Basic Design
Lip seal, wiper ring

Servocop®
Compact seal, lip seal, wiper ring

Servoseal®
Servoseal®, lip seal, wiper ring

Servofloat®
Floating gap seal, functional oil seal, wiper ring

Functional oil seal
Functional oil seal, wiper ring

Servoslide®
Synthetic guide

– Simple movements
– Long-stroke oscillations
– Side loads due to lateral movement
– Low stick-slip
– v ≤ 0.5 m/s

– Controlled movements
– Long-stroke oscillations
– Side loads due to lateral movement
– Mostly stick-slip-free
– v ≤ 2 m/s

– Sensitive movements
– Long- and short-stroke oscillations
– Side loads due to lateral movement
– Low-wear
– v ≤ 2 m/s

– Sensitive movements
– Long- and short-stroke oscillations
– Side loads due to lateral movement
– Low-wear
– v ≤ 2 m/s

Metallic guide

– Simple movements
– High temperatures
– Universal application
– Low stick-slip
– v ≤ 0.5 m/s

– Simple movements
– High temperatures
– Mostly stick-slip-free
– v ≤ 1 m/s

– Simple movements
– Temperatures up to 80ºC
– Low-wear
– v ≤ 1 m/s

– Simple movements
– High temperatures
– Low-wear
– v ≤ 1 m/s

PTFE Wear rings

– Controlled movements
– Long-stroke oscillations
– Side loads due to lateral movement
– Long cylinder stroke
– Mostly stick-slip-free
– v ≤ 3 m/s

– Sensitive movements
– Long- and short-stroke oscillations
– External side loads due to lateral movement
– Low-wear
– v ≤ 3 m/s

– Sensitive movements
– Long- and short-stroke oscillations
– External side loads due to lateral movement
– Low-wear
– v ≤ 4 m/s

Servobear®
Hydrostatic bearing

– Sensitive movements
– Short-stroke oscillations, highly dynamic
– Highest side loads
– No leak oil pump required
– v ≤ 4 m/s

Product Guide

Test Cylinders 101

Sealing Systems

Applications and Solutions

Application Examples and Solutions

Hydraulic Test Cylinders are used in a wide variety of applications including automotive testing such as lifecycle tests, aerospace system tests such as load and environmental condition simulation, and fluid power operating condition simulation.

Automotive

Servo hydraulic lifecycle tests are the current industry standard for automobile components that are used far beyond safety-related structural elements. Users can depend on hydraulic test actuators for high positioning accuracy and reliability in applications for test systems and real time control. A test cylinder with a dynamic lift of up to 35 mm (1.3 in.), speed of 1.3 m/s (51.2 in/s), and acceleration of up to 50 m/s (1968.5 in/s) could be used for a test load requiring up to 28 kN (6,294 lbf) and a frequency up to 20 Hz.

Aerospace

System tests that simulate loads and environmental conditions in different flight phases are particularly demanding. To test the landing flaps and slats, servo hydraulic cylinders could be used here to replicate the airflow that involves rapidly changing forces with irregular parameters. For example, a servo cylinder with a bore between 40 to 160 mm (1.5 to 6.2 in.) could be used for a test stand with a holding force between 140 – 300 kN (31.4 to 67.4 lbf) and a stroke requirement of 300 to 1,670 mm (11.8 to 65.7 in.). 

Fluid Power

To determine the characteristic values of a seal, seal test benches are suitable for simulating a wide range of operating conditions. Double rod cylinders could be used here for fatigue tests focused on examining the frictional force of the seals, tightness on rods and shafts.

Contact

+1.877.ICFLUID

Request a Price Quote

Brochures & Catalogs

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Frequently Asked Questions

Hänchen offers 5 cylinder cover sealing systems and 4 guide options to provide very low friction and minimize stick-slip for all those that need it.

On the market today, there are two standard sealing options for the cylinder cover: a basic design with a lip seal and wiper ring or hydrostatic functional oil seals. To address in-between friction and stick-slip needs, Hänchen offers these, plus additional sealing options.

Sealing pressure and temperature

We offer sealing options handling pressures up to 29,000 psi (2,000 bar) and temperatures from -40 °F to 392 °F (-40 °C to 200 °C).

Sealing systems

Sealing system in cover

Basic Design

Servocop®

Servoseal®

Servofloat®

Functional oil seal

Application

For simple, long stroke movements with minimal lateral loads

For low sensitive, stick-slip free movements

A step above Servocop®, very low friction, virtually no leakage

Extremely low friction

For pressure-less functional oil sealing with hydrostatic bearings

Sealing combo

Lip seal, wiper ring

Lip seal, wiper ring, compact seal

Servoseal®, functional oil seal, wiper ring

Floating gap seal, functional oil seal, wiper ring

Functional oil seal, wiper ring

Temperature range

-22 to 392°F (-30 to 200 °C)

-22 to 392°F (-30 to 200 °C)

-22 to 176°F
(-30 to 80 °C)

-22 to 212°F
(-30 to 100°C)

-22 to 212°F
(-30 to 100°C)

Speed

0.5 m/s

3 m/s

3 m/s

4 m/s

4 m/s

Guide options

In addition to sealing options, the guide system is equally important for reducing friction and wear. Hänchen offers:

Sealing system in cover

Servoslide® synthetic guide

Metallic guide

PTFE wear rings

Servobear® hydrostatic bearing

Application

For movements with moderate side loads

For simple, long-stroke movements or high temperatures

For movements with high side loads

For friction-free movement with very high side loads

Sealing combo

Lip seal, wiper ring

Lip seal, wiper ring, compact seal

Servoseal®, functional oil seal, wiper ring

Floating gap seal, functional oil seal, wiper ring

Temperature range

-22 to 176°F
(-30 to 80 °C)

-22 to 392°F (-30 to 200 °C)

-22 to 392°F (-30 to 200 °C)

-22 to 212°F
(-30 to 100°C)

Speed

2 m/s

1 m/s

4 m/s

4 m/s

Learn about all 12 different sealing and guide combinations here.

1,000 Hz.

The maximum frequency we can achieve is up to 1,000 Hz. While it is theoretically possible to design our cylinders for any frequency, the main limitation is the valve control technology. Our cylinders are capable of higher frequencies than most valves on the market can support. This means the maximum frequency you can achieve is limited only by the valve’s capability, not the cylinder itself.

The recommended operating temperature range depends on the lowest and highest temperature limit of selected seals and materials.

  • Engineers must consider the material’s permissible tensile strength and seal temperature limits at low temperatures. In this case, special attention should be given to the notched impact strength, which decreases as the temperature drops and affects the material’s resistance to sudden loads.
  • Materials with specific properties must be used to ensure reliable toughness values even at low temperatures, for example at –22 °F (–30 °C) or –40 °F (–40 °C).
  • In the area of the sealing elements, care must be taken to select the proper material. For instance, different NBR mixtures have different temperature properties and therefore the temperature limit is not necessarily defined by the simple material name, for example, NBR.
  • Seals for temperatures down to 5° F (-15 °C) are permitted as standard. Special seals can be used for low temperatures.

14-18 weeks lead time, including manufacturing and shipping.

Specialty cylinders are manufactured in 7-16 weeks in Germany and then shipped by air-freight (2-week shipping).

It can be difficult to put a number on the lifetime of a Hänchen cylinder. This is because it’s very application dependent. A cylinder in a concrete crushing application that is exposed to constant concrete dust in the air isn’t going to last as long as a cylinder in a clean environment. However, the rigidity, honing, in combination with the right sealing and material can mean that Hänchen cylinders last a long time. It is not uncommon for cylinders to last 20, 30 years with only seal kit changes.

Depending on application and maintenance, the lifetime of a Hänchen cylinder is twice as long as many standard competitors. Cylinders have lasted in service for 40 years without failure. Rigidity honing , the right sealing and material combos for the application will with only seal kits changes 20-30 years, application.

Yes.

Our team of experienced engineers specializes in developing custom hydraulic cylinder solutions to meet your exact needs. We can modify design, materials, size, mediums, seals, coatings, sensors, and more to create a product that meets your exact requirements. See full customizations here.

Yes.

IC-Fluid Power, inc. offers local and regional support throughout North America. Whether you need help with hydraulic cylinder servicing, troubleshooting, or just have questions, our experts are ready to assist. For personalized support, contact our team at sales@icfluid.com or call us at (419) 661-8811.

Yes.

We provide spare parts such as seal kits, piston rods, cylinder covers, and more upon request. Please reach out to our inside sales team at sales@icfluid.com.

The maximum speed is limited by the seal solution, which is the type of seal configuration and/or the material.

In the following charts, the numbers on the right denote the maximum velocity in meters per second (v max in m/s).

Sealing system in cover

0.5

1

2

3

4

Basic sealing system

+

–

–

–

–

Servocop®

+

+

+

+

–

Servoseal®

+

+

+

+

–

Servofloat®

+

+

+

+

+

Floating oil seal

+

+

+

+

+

Guiding system in cover

0.5

1

2

3

4

Servoslide®

+

+

+

–

–

Metallic guide

+

+

–

–

–

PTFE wear rings

+

+

+

+

+

Servobear®

+

+

+

+

+

Sealing system on the piston

0.5

1

2

3

4

Rectangular compact seal

+

+

+

+

+

Rectangular compact seal with elastomer

+

–

–

–

–

Throttle gap

+

+

+

+

+

Servoseal®

+

+

+

+

+

Series 320

The Series 320 cylinders are used in highly dynamic testing and motion control applications where high cycling accuracy is required, oftentimes with low amplitudes. It supports variable displacement profiles with stable performance under load.

  • Sealing Systems
    The Series 320 uses Servofloat®, Servobear®, or Servoseal® sealing systems. The piston is fitted with either a gap seal or Servoseal®.
  • Cylinder Design
    The cylinder body has a rigid construction that limits vibration. Optional conical protection tubes reduce lateral movement in fast or high-force conditions. All models use a double-rod configuration with bore sizes offered in 1 mm increments.
  • Mounting and Sensors
    The Series 320 includes a mounting plate that supports control valves and allows accumulators to be attached for pressure regulation to smooth out the dynamic movement. Inductive and magneto strictive transducers can be integrated for position sensing.
  • Typical Applications
    The cylinder is typically used in test systems demanding precise motion, high cycle rates, and consistent displacement control.

Series 120 and 300

The Series 120 and 300 cylinders are designed as compact alternatives to classic test actuators for simple testing tasks. When equipped with a mounting plate and position transducer, they deliver precise performance for static and dynamic test applications.

  • Sealing Systems
    Servocop®, Servoseal®, or Servofloat® sealing systems are available on the cover, combined with Servoslide® guide systems or PTFE wear rings. On the piston, either a rectangular compact seal or Servoseal® is used for test applications requiring consistent sealing performance.
  • Cylinder Design
    These cylinders feature a lightweight, rigid design ideal for long strokes or for applications where the cylinder must move with the test structure, such as pivoting movements.
  • Single-rod: supports static or low-frequencies up to 7 Hz.
  • Double-rod: supports dynamic frequencies up to 25 Hz.
  • Mounting and Sensors
    Compact mounting plates allow the integration of lightweight control valves and position transducers, forming a complete and efficient test actuator assembly.
  • Typical Applications
    Series 120 and 300 cylinders are typically used in simple test setups requiring precise linear motion with moderate dynamic loads and minimal actuator mass.

Choosing a single or double-rod cylinder depends on the force ratios, dynamics, and lateral vibrations.

  • Up to 7 Hz: use single-rod (Series 120 or 300)
  • Up to 25 Hz: use double-rod (Series 120 or 300)
  • Over 25 Hz: use double-rod (Series 320)

Single-rod, Series 120, 300 (up to 7 Hz)

Single-rod cylinders are suitable for moderate dynamics with frequencies up to 7 Hz. Higher frequencies can also be achieved, depending on the dynamics of the control valve used, the travel speed, and the cylinder size. Asymmetrical control valves may have to be used for this purpose.

Double-rod, Series 120, 300 (up to 25 Hz)

Above a certain dynamic, it is advisable to work with equally large effective areas on the cylinder. For example, it is recommended to use double-rod cylinders for up to 25 Hz, as most control valves have symmetrical surfaces.

Besides the hydraulic limits, even the mechanical properties play an important role. At exceptionally high frequencies, very heavy and stiff cylinders are preferred to prevent the cylinder from swinging up due to transverse acceleration. For example, this can be achieved by using heavy, conical protection tubes.

Double-rod, Series 320 (above 25 Hz)

For applications exceeding 25 Hz, the Series 320 is recommended.

For short strokes or low-amplitude movements (for example, around ±1 mm) over an extended period, contact seals can cause friction and significant wear because the surfaces move too little to maintain lubrication.

In such cases, non-contact sealing or guiding systems are recommended such as Hänchen’s Servobear® (commonly referred to as hydrostatic), Servoseal®, Servofloat®, or Servobear®). This design avoids surface scoring and provide smoother motion.

Sealing system in cover

“simple” long-stroke
Movement

short-stroke oscillation
Amplitude x < 6mm

Basic sealing system

+

– –

Servocop®

+

–

Servoseal®

+

+

Servofloat®

+

+

Floating oil seal

+

+

Guiding system in the cover

“simple” long-stroke
Movement

short-stroke oscillation
Amplitude x < 6mm

Servoslide®

+

–

Metallic guide

+

– –

PTFE wear rings

+

+

Servobear®

+

+

Sealing system on the piston

“simple” long-stroke
Movement

short-stroke oscillation
Amplitude x < 6mm

Rectangular compact seal

+

–

Rectangular compact seal with elastomer

+

– –

Throttle gap

+

+

Servoseal®

+

+

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Home / Products / Hydraulic Servo Valves / Hydraulic Servo Proportional Valves – P10 Pro
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Hydraulic Servo Proportional Valve – P10 Pro

The P10 Pro is a high flow servo proportional valve engineered for demanding heavy duty applications. With strong dynamic stability and robust construction, it manages large volumes of hydraulic power with confidence, supporting presses, power and energy systems, and large-scale industrial automation. It is designed for environments where consistent control under higher loads is essential.

Available on NG10 port pattern as standard. S77 adaptors available.

Popular Upgrade Models:

  • Bosch Rexroth 4WRPEH 10
  • Woodward 27G50F
  • Atos DLHZ0
  • Moog D634

Key Stats:

  • Hysteresis: <0.2%
  • Leakage: <0.4 gpm (<1 lpm)
  • Shock Resistance: 50 g
  • Frequency Response: >65 Hz
  • Rated Flow: 10.6 to 42 gpm (40 to 160 lpm)
  • Flow Maximum: 66 gpm (250 lpm)
  • Response Time: <20 ms
  • Mounting Interface: ISO 4401-05-04

Key Features:

  • Onboard electronics with spool position feedback
  • Rated flow of up to 160 lpm at [1,015 psi (70 bar)]
  • Based on the NG10 port pattern
  • Bandwidth > 65 Hz (-3 dB, up to ± 25% FS)
  • Chip shear capability of >157 lbf (>700 N)
  • Valve mass of 8.8 lb (4 kg)

Standard Modification Options:

  • Rated flow rates of up to 42 gpm (160 lpm)
  • Multiple voltage or current control options
  • Various seal materials available
  • Non-standard configurations available

Technical Data:

DesignDirect Drive Servo Proportional Valve
ActuationRotary-Linear
SizeNG10
Mounting InterfaceISO 4401-05-04
Ambient TemperatureºC (ºF)-20 to +60 (-4 to +140)
Masskg (lb)4 (8.8)
Vibration Resistanceg30
Shock Resistanceg50
Max. Operating Pressure (P, A, B)Bar (psi)350 (5,000)
Max. Operating Pressure (T)Bar (psi)250 (3,600)
FluidHydraulic Oil DIN 51524
Fluid TemperatureºC (ºF)-20 to +80 (-5 to +175)
ViscositycSt5 to 500
Rated Flowl/min (US gal / min)40 to 160
(10.6 to 42)
Flow Maximuml/min (US gal / min)250 (66)
Pressure Gain% / %>40
Leakage at 100 barl/min (US gal / min)<1 (0.4)
FiltrationISO 4406 (1999) 18/16/13
Response Time at 100% Step Inputms<20
Frequency Response (-3dB gain, ±25% signal)Hz>65
Frequency Response (-90deg phase, ±25% signal)Hz>65
Hysteresis%<0.2
Threshold%<0.1
Null Shift%<1

View performance graphs for the P10 Pro Domin Servo Proportional Valve below including Step Response and Frequency Response:

  • Domin P10 Step Response Graph Chart for Domin Servo Proportional Valves, Graph and Figure
    P10 Pro Step Response Graph
  • Domin P10 Frequency Response Graph Chart for Domin Servo Proportional Valves, Graph and Figure
    P10 Pro Frequency Response Graph

Ordering Code

P10 Pro 1 2 3 4 5 6 7 8 9

Any value in range 40 to 160

Rate flow in l/min for 35 bar ∆P per control edge

R – Suffix for reversal of A and B port e.g. 250R

A

Axis cut (1% overlap linearized)

D

Deadband

F

Float Center

O

Overlap

X

For other options please enquire

A

± 10 V

B

± 20 mA

C

4 to 20 mA

D

± 5 V

E

± 5 mA

F

± 10 mA

X

For other options please enquire

For differing input and output signals, use two letters,
e.g. AC denotes ± 10V input and 4 to 20 mA output

C

Center

X

For other options please enquire

E

6 pin + PE circular connector *

E4

4 pin circular connector *

X

For other options please enquire

* EN 175201-804/MIL 5015 equivalent connector, shell size 14

Y

Enable mode on

N

No enable functionality

R

Recommended – any hydraulic oil in accordance with DIN 51524, filtered in accordance with ISO4406 18/16/13. Compatibility with water-free synthetic fluids available on enquiry.

X

For other options please enquire

N

Nitrile (Shore 90)

V

Viton (Shore 85)

X

For other options please enquire

Assigned individually to any with customized options upon enquiry

Variants on Request

Domin is proud of their ability to offer tailored solutions that meet customers’ specific needs. If you require a non-standard configuration, or a bespoke modification, we are confident we can provide you with the best solution. Talk to us here and one of our team members will respond as soon as possible.

Domin is a supplier and servo valve manufacturer for various applications including blow/injection molding, wood/timber machines, metal processing, die casting, hydraulic presses, and vibration equipment.

Related Products

Home / Products / Hydraulic Servo Valves / Hydraulic Servo Proportional Valves – P6 Pro
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Hydraulic Servo Proportional Valve – P6 Pro

The Domin P6 Pro is a compact servo proportional valve designed for precise control in smaller and mid-sized industrial systems. Its fast response and fine resolution make it well suited to machinery that depends on accurate motion management in a smaller footprint, such as injection moulding, ceramics, and automated handling systems. It installs easily into existing NG06 platforms and brings dependable day to day performance with minimal setup.

Servo Proportional Valves Designed for Industrial Applications

The P Series is designed for industrial and automation applications, such as injection molding equipment, ceramic presses, energy systems, and automated production lines. See how it compares to Domin’s original S Series in industrial applications:

P Series – Proportional Valves

S Series – Servo Valves

  • Accessible pricing for high-volume industrial applications
  • Designed for robust industrial manufacturing, molding, and automation
  • Applications for low to medium response rates (<10 ms for NGO6)
  • Competitive pricing with better performance compared to big names in the servo valve market
  • Designed for testing and dynamic applications
  • Applications for fast response rates (<3.5 ms for NGO6)

Popular Upgrade Models:

  • Moog D633: 75% lighter
  • Bosch Rexroth 4WRPEH 6
  • Atos DLHZO
  • Woodward 27B50F

Key Stats:

  • Hysteresis: <0.2%
  • Leakage: <0.13 gpm (<0.5 lpm)
  • Mass: 1.39 lbs (0.63 kg)
  • Rated Flow: 2.6-10.6 gpm (5-40 lpm)
  • Response Time: <10 ms

Key Features:

  • Onboard electronics with spool position feedback
  • Rated flow of up to 10.6 gpm (40 lpm) (at 1,015 psi (70 bar))
  • Mounting interface of ISO 4401-03-02
  • Available on NG06/CETOP3 port pattern as standard
  • Bandwidth > 100 Hz (-3 dB, up to ± 25% FS)
  • Low power consumption of less than 5 W 
  • Chip shear capability of greater than 89 lbf (400 N)
  • Low weight of less than 1.5 lbs (630 g)

Standard Modification Options:

  • Choice of rated flow up to 10.6 gpm (40 lpm)
  • Multiple voltage or current control options
  • Various seal materials available
  • Non-standard configurations available

Technical Data:

DesignDirect Drive Servo Proportional Valve
ActuationRotary-Linear
SizeNG06
Mounting InterfaceISO 4401-03-02
Ambient TemperatureºC (ºF)-20 to +60 (-4 to +140)
Masskg (lb)0.63 (1.39)
Vibration Resistance, All Axesg30
Shock Resistance, All Axesg50
Max. Operating Pressure (P, A, B)Bar (psi)350 (5,000)
Max. Operating Pressure (T)Bar (psi)250 (3,600)
FluidHydraulic Oil DIN 51524-535
Fluid TemperatureºC (ºF)-20 to +80 (-5 to +175)
ViscositycSt5 to 500
Rated Flowl/min (US gal / min)5 to 25 (2.6 to 6.6)
25 to 40 (6.6 to 10.6)
Flow Maximuml/min (US gal / min)56 (14.8)
89 (23.5)
Leakage at 100 barl/min (US gal / min)< 0.5 (0.13)
Pressure Gain%/%> 40
FiltrationISO 4406 (1999) 18/16/13
Response Time at 100% Step Inputms<10
Frequency Response (-3dB gain, ±25% signal)Hz>100
Frequency Response (-90deg phase, ±25% signal)Hz>100
Hysteresis%<0.2
Threshold%<0.1
Null Shift%<1

View performance graphs for the P6 Pro Domin Servo Proportional Valve below including Step Response and Frequency Response:

  • Domin P6 Step Response Graph Chart for Domin Servo Proportional Valves, Graph and Figure
    Step Response Chart for the P6 Pro
  • Domin P6 Frequency Response Graph Chart for Domin Servo Proportional Valves, Graph and Figure
    Frequency Response Chart for the P6 Pro

Ordering Code

P6 Pro 1 2 3 4 5 6 7 8 9

Any value in range 5 to 40*

Rate flow in l/min for 35 bar ∆P per control edge

R – Suffix for reversal of A and B port e.g. 60R

* Flow rating set in valve software – dynamic performance measured set at 60lpm flow.

A

Axis cut (1% overlap linearized)

D

Deadband

F

Float Center

O

Overlap

X

For other options please enquire

A

± 10 V

B

± 20 mA

C

4 to 20 mA

D

± 5 V

E

± 5 mA

F

± 10 mA

X

For other options please enquire

For differing input and output signals, use two letters,
e.g. AC denotes ± 10V input and 4 to 20 mA output

C

Center

X

For other options please enquire

E

6 pin + PE

E4

4 pin

X

For other options please enquire

Y

Enable mode

N

No enable functionality

R

Recommended – any hydraulic oil in accordance with DIN 51524, filtered in accordance with ISO4406 18/16/13. Compatibility with water-free synthetic fluids available on enquiry.

X

For other options please enquire

N

Nitrile (Shore 90)

V

Viton (Shore 85)

X

For other options please enquire

Assigned individually to any with customized options upon enquiry

Variants on Request

Domin is proud of their ability to offer tailored solutions that meet customers’ specific needs. If you require a non-standard configuration, or a bespoke modification, we are confident we can provide you with the best solution. Talk to us here and one of our team members will respond as soon as possible.

Domin is a supplier and servo proportional valve manufacturer for various applications including die casting, injection molding, wood/timber machines, vibration equipment, metal processing, and simulation.

Related Products

Home / Products / Hydraulic Cylinders / Carbon Hybrid Hydraulic Cylinder
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MARK LIGHT Carbon Hybrid Cylinder Logo

Hydraulic Cylinders — Carbon Hybrid

MARK carbon hybrid cylinders are the best of both worlds. Classic, high-strength metal (such as aluminum or steel) combined with lightweight, high-performance carbon fiber (CFRP).

Advantages at a Glance:

  • Higher efficiency of the cylinder due to:
  • Shorter cycle times
  • Lower mass acceleration and deceleration
  • Fewer CO₂ emissions during operation for better sustainability efforts
  • Higher payload (more load capacity) due to weight savings
  • Preservation of tribological properties meaning less wear on components
  • Less mass, less energy required, lower fuel consumption
  • Corrosion resistant, as carbon is not susceptible to rust or chemicals

What does carbon hybrid mean?

Precision-manufactured components such as pistons, rod guides, and cylinder bases are made of aluminum or steel for maximum resilience and durability. The inner tube, or the liner, is made of extremely thin steel (for example, on a micro-cylinder, the liner is only 0.4 mm thick), ensuring optimum tightness and precise sealing clearance.

The carbon hybrid comes from the fact that all cylinder parts are fully wrapped in carbon fiber. This carbon wrap is the only thing that connects the end pieces, such as the rod guide and cylinder base, and thus means optimal functioning of the cylinder. The carbon fiber is the structural connector, as opposed to welding, gluing or threading.

Why carbon?

  • High strength: Extremely resistant to tension and compression, ideal for load-bearing structures
  • High rigidity: High modulus of elasticity, advantageous for dynamic loads
  • Low density: Significantly lighter than steel or aluminum, saves weight and energy
  • Corrosion resistance: Rust-free and resistant to many chemicals
  • Good damping behavior: Effectively reduces vibrations and oscillations
  • Fatigue resistance: Stable despite repeated loads, less material fatigue
  • X-ray transparency: Permeable to X-rays, ideal for medical technology & aviation
  • Customizable properties: Fiber orientation & resin matrix can be precisely matched to the application
  • Adjustable thermal expansion: Minimized thermal expansion for precise components

Where Carbon Hybrid Cylinders make a difference

Because our carbon fiber cylinders are up to 70% lighter than traditional steel cylinders, using these components reduces energy consumption leading to measurable cost savings over time.

Below are some areas where our light-weight construction can really make a difference:

Application

Where carbon fiber makes a difference

How it makes a difference

Lifting platforms

Load moment

Reducing weight allows the platform to lift more or lift more safely, because the structure needs to support less self-weight

Transportation

Deadweight

Reducing deadweight increases potential payload capacity, reduces fuel usage, and improves efficiency

Agricultural technology

Load moment, corrosion

Lighter components improve load moments on AG machinery, and because carbon fiber does not corrode, these cylinders are strong in this environment where moisture, dirt, and chemicals are prevalent

Maritime

Weight, corrosion

Lightweight components improve stability and efficiency, while corrosion resistance is critical due to saltwater environments

Exoskeletons, tools

Micro-cylinders

Our small, lightweight micro-cylinders are optimal in wearable exoskeletons or handheld tools, where low weight is essential for ergonomics and mobility

E-mobility

Weight reduction

In electric vehicles, every kilogram saved increases range and efficiency, making lightweight components highly valuable

Rescue cylinders

Weight

Lightweight, powerful cylinders make rescue tools easier to handle for emergency responders, improving speed and safety during operations

MARK LIGHT is a supplier and hydraulic cylinder manufacturer for various applications including maritime, agricultural, mobility, and transport.

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A Hunger Hydraulics Cylinder US Supplier & Distributor

IC-Fluid Power, Inc. is a supplier, representative, and distributor of Hunger Hydraulics’ cylinders, providing North American customers with direct access to Hunger Hydraulics’ specialized, heavy-duty, custom cylinders, advanced coatings, and large-scale manufacturing capabilities. Our close relationship (as well as our close physical proximity) with Hunger means responsive communication for our customers right from the factory floor, which is especially valuable for complex or heavy-duty projects. As an experienced hydraulics distributor, IC-Fluid Power delivers European engineering quality to industrial applications throughout the United States.

Hunger Hydraulics’ Background

Founded in 1945 by Walter Hunger in Saxony, Germany, the Hunger Group has built a rich heritage of innovation in hydraulic engineering. In 1981, the Hunger Group established its US branch in Ohio. Located in Rossford, Hunger Hydraulics USA has provided engineered hydraulic solutions for more than 44 years. Hunger is a world leader in custom, heavy-duty hydraulic cylinders, precision machining, sealing technology, and integrated hydraulic systems.

Hunger’s Hydraulic Cylinders

The Hunger Group is known worldwide for producing high-performance hydraulic cylinders built for demanding industrial environments. Their product range includes custom engineered cylinders, large-scale heavy-duty designs, advanced coatings, and low-friction sealing systems that support long service life even in harsh conditions. Hunger cylinders are used in subsea, offshore, mining, steel production, and other applications that require precision, durability, and reliable motion control.

Family-Owned Partnership with Hunger Hydraulics for Large Industrial Cylinders

We are a proud partner of Hunger Hydraulics USA, a global leader in custom hydraulic cylinders since 1945. As a Hunger partner, IC-Fluid Power benefits from direct leadership ties, presenting the North American market with European and German engineering standards.

IC-Fluid Power’s Capabilities for Large-Scale Industrial Projects

  • Priority access to manufacturing capacity and custom cylinder production
  • Connection to some of the largest and most advanced hydraulic cylinders in the world (cylinder weighing up to 280 tons!)
  • Trusted reputation for industrial-grade cylinders with patented low-friction sealing systems and advanced coatings like Ceraplate® or Ultraplate® for heavy-duty subsea, offshore, and mining applications  
  • Local proximity to Hunger Hydraulics’ manufacturing site with responsive communication for our customers right from the factory floor, just a two-minute walk from IC-Fluid Power’s facility in Rossford, Ohio
  • Experience delivering custom solutions across all scales and complexity levels since 1945

Need Support? We Can Help.

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Home / Products / Flow Dividers / Hydraulic Flow Divider Valve
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Hydraulic Flow Divider Valve

When precision is secondary to affordability, flow divider valves can be used. These two-section dividers are designed for compact applications with synchronization errors between ±4 to 5%.

These divider valves are bidirectional, capable of both dividing and combining flow. The flow division is largely unaffected by the viscosity of the fluid being used or changes in pressure.

Two models are available, both with identical flow capacity. The difference lies in their housing material and pressure ratings.

MKA

2 section divider. Flow Rate: 0.53 to 39 gpm (2 to 150 lpm). Lightweight aluminum body. Peak operating pressure of 3,045 psi (210 bar).

MKS

2 section divider. Flow Rate: 0.53 to 39 gpm (2 to 150 lpm). Steel body. Peak operating pressure of 5,075 psi (350 bar).

Technical Data Table

Type

Min. Total Flow
(gpm) [lpm]

Max. Total Flow
(gpm) [lpm]

Peak Pressure
(psi) [bar]

MKA-1/12

1.05
[4]

3.17
[12]

3045
[210]

MKA-1/24

3.17
[12]

6.34
[24]

3045
[210]

MKA-1/40

6.34
[24]

10.56
[40]

3045
[210]

MKA-2/90

10.56
[40]

23.77
[90]

3045
[210]

MKA-2/150

23.77
[90]

39.62
[150]

3045
[210]

Type

Min. Total Flow
(gpm) [lpm]

Max. Total Flow
(gpm) [lpm]

Peak Pressure
(psi) [bar]

MKS-0/6

0.52
[2]

1.05
[4]

4565
[315]

MKS-1/12

1.05
[4]

3.17
[12]

5075
[350]

MKS-1/24

3.17
[12]

6.34
[24]

5075
[350]

MKS-1/40

6.34
[24]

10.56
[40]

5075
[350]

MKS-2/90

10.56
[40]

23.77
[90]

5075
[350]

MKS-2/150

23.77
[90]

39.62
[150]

5075
[350]

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TEST POINTS AND TEST HOSE ASSEMBLIES SPECS

Home / Products / Test Points & Hoses / Test Points & Test Hose Specs
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Test Points and Test Hose Assemblies

Pressure is one of the most important diagnostic parameters in the hydraulic circuit.  Obtaining pressure readings is essential to successful preventive maintenance and troubleshooting. The Spradow test points allow the connection of a pressure gauge in only seconds while the equipment is running. It is the safest, cleanest and most convenient way of measuring pressure. Designing your equipment with the Spradow test points will improve the quality of your equipment and in today’s market, higher quality makes the equipment more attractive to potential buyers. The spring loaded check valve inside the test point opens during engagement of the special micro-bore hose fitting end. The connection can be performed under pressure without the use of tools. A single gauge connected to the high pressure micro-bore hose can check an unlimited number of test points. We also offer various types of hose assemblies for direct connection to the test fitting.

Material Data:

Max working pressure

9,135 psi (629 bar)

Temperature range

-4ºF to 322ºF (-15ºC to 161ºC)

Threads

M16 x 2

Metal material

Carbon steel and zinc chromate (stainless steel available upon request)

Seal options

NBR, 90 durometer (others by request)

ISO Standard

DIN ISO 4042

Compatibility

Interchangeable with other brands

Spradow is a supplier and test point and test hose assembly manufacturer for various applications including construction, mechanical, technological, and industrial.

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Home / Products / Test Points & Hoses / Smart Logger Pressure Gauge
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Smart Logger Pressure Gauge

Smart Logger Bluetooth digital pressure gauges incorporate a high precision pressure sensor with an accurate LCD display showing measured pressure in real time and can transmit readings up to 10 Hz via Bluetooth. 

This digital pressure gauge is equipped with a large size LCD liquid crystal display, which has multiple functions such as zero reset, backlight, power on and off, pressure unit selection & low voltage alarms. Easy to operate and install, the display can be rotated 330° which is convenient for operators to read from different angles. The unit is supplied with a protective rubber shroud has good shock resistance and can measure gas, liquid, oil and other media that are not corrosive to stainless steel. This Smart Logger Bluetooth digital pressure gauge supports iOS and Android Bluetooth apps with configuration parameters that include display of pressure values, acquisition rate modification, zero reset operation and start/stop logging. 

Smart Logger Bluetooth digital pressure gauges are suitable for portable pressure measurement, equipment matching, calibration equipment and other pressure measurement fields. 

Advantages at a Glance:

  • Dial can be rotated 330º
  • Easy operation
  • Multiple selectable pressure units
  • Zero reset and backlight
  • Bluetooth connection to iOS and Android apps with datalogging
  • Low power consumption design, 2x AA batteries
  • 12 months of battery life
  • Ergonomic & robust design, with rubber shroud and easy operation

Pressure Range Chart:

Pressure Ranges

psi

bar

Negative/compound pressure

Vacuum to 14 & 232 psi

Vacuum to 1 & 16 bar

Low pressure (on request)

0…1.4, 5.8, & 8.7 psi

0…0.1, 0.4, & 0.6 bar

Medium pressure

0…870, 2,320, & 3,625 psi

0…60, 160, & 250 bar

High pressure

0…5,800, 10,150, & 14,500 psi

0…400, 700, & 1,000 bar

Technical Specifications:

Overload capacity

up to 8,700 psi (600 bar) – 200% FS; 10,150 psi (700 bar) – 150%; 14,500 psi (1,000 bar) – 120%

Backlight color

White

Dimensions

143.5 x 75 x 40.5 mm

Accuracy

±0.2%FS

Long-term stability

Typical ±0.3%FS/year

Operating temperature

-20 – 65ºC

Electrical protection

Anti-electromagnetic interference design

Measuring medium

Oil, water, gas, and other stainless steel corrosion free medium

Pressure connection

G1/4″ BSP (alternative threads on request)

Connection material

Sensor body 304L, wetted parts 316L

Shell material

TPE+ABS

Product features

Turn on/off, backlight, clear, zero unit, switch extreme value, record, Bluetooth connection

Power supply voltage

3V (2x AA batteries)

Power display

Four sections display

Dial

Rotatable to 330 degrees

Pressure unit

MPa, bar, kgf, mH20, psi, kPa, mmHg, mBAR, mmH20, Pa, inWC

Protection level

IP54

Smart Logger Series Specifications

G

Pressure Stage

Part Number (NBR)

Series

G1/4-WD

870 psi
(60 bar)

1-982-10-03-060

SL-60

G1/4-WD

3625 psi
(250 bar)

1-982-10-03-120

SL-250

G1/4-WD

10150 psi
(700 bar)

1-982-10-03-210

SL-700

G1/4-WD

14500 psi
(1000 bar)

1-982-10-03-150

SL-1000

Other dimensions on request. We reserve the right to change the technical performance. All dimensions in mm. ± 0.5 mm.

*G1/4″ WD Flat sealing, other threads available on request.

Spradow is a supplier and test point and test hose assembly manufacturer for various applications including construction, mechanical, technological, and industrial.

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Home / Products / Hydraulic Servo Valves / Hydraulic Servo Valves – S12 Pro
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Hydraulic Servo Valves – S12 Pro

Compact Power. Proven Reliability.

The Domin S12 Pro is the next evolution in high-performance, high-flow hydraulic valves. It builds on the proven reliability of the S6 Pro, which is now used as the first stage for the most advanced two-stage valve in the world.

The S12 Pro delivers unmatched performance with the same trusted dependability. Combining high flow, excellent dynamics, proven reliability, and low power consumption, the S12 Pro sets a new benchmark in demanding applications.

With dimensions of 13.25 in (377 mm) in length and 6.9 in (177 mm) in height, the S12 Pro is thoughtfully designed with all components fully enclosed, eliminating exposed wires or sensors. This user-focused design element ensures not only a clean, sleek appearance, but also easier handling and installation.

This combination of performance and compact design makes the S12 Pro ideal for applications in industrial manufacturing, test simulation, and the energy sector.

Popular Upgrade Models:

  • Bosch Rexroth 4WRLE 16
  • Moog D662
  • Parker D41FP
  • Atos DPZO-2

Key Stats:

  • Frequency Response: >100 Hz
  • Rated Flow: 66-174 gpm (250-660 lpm)
  • Response Time: <9 ms

Key Features:

  • Onboard electronics with spool position feedback
  • Rated flow of up to 250 lpm (66 gpm)
  • Based on the NG16 port pattern
  • Bandwidth > 70 Hz (-3 dB, up to ± 25% FS)
  • Low power consumption of less than 5 W

Standard Modification Options:

  • Choice of rated flows up to 250 l/min (66 gpm) 10 Bar △P
  • Multiple voltage or current control options
  • Various seal materials available
  • Non-standard configurations available

Technical Data:

DesignTwo-Staged Servo Valve
ActuationDirect Drive Pilot
SizeNG16
Mounting InterfaceISO 4401-07-07
Ambient TemperatureºC (ºF)-20 to +60
(-4 to +140)
Masskg (lb)9 (20)
Max. Operating Pressure (P, A, B)Bar (psi)350 (5,000)
Max. Operating Pressure (T)Bar (psi)250 (3,600)
FluidHydraulic Oil DIN 51524-535
Fluid TemperatureºC (ºF)-20 to +80
(-5 to +175)
ViscositycSt5 to 500
Rated Flow (5 Bar △P per edge)l/min (US gal / min)250 (66)
Rated Flow (35 Bar △P per edge)l/min (US gal / min)660 (174)
Pilot Leakagel/min (US gal / min)<0.3 (0.08)
Main Stage Leakagel/min (US gal / min)<2.7 (0.7)
FiltrationISO 4406 (1999) 18/16/13
Response Time at 100% Step Inputms<10
Frequency Response (-3dB gain, ±25% signal)Hz>70
Frequency Response (-90deg phase, ±25% signal)Hz>100
Hysteresis%<0.2
Threshold%<0.1
Null Shift%<1

View performance graphs for the S12 Pro Domin Servo Valve below including Step Response, Flow vs Command, Frequency Response, and Pressure Gain:

  • Domin Servo Valve Direct Drive Valve S12Pro Step Response Graph Chart
    Step Response
  • Domin Servo Valve Direct Drive Valve S12Pro Flow vs Command Graph Chart
    Flow vs Command
  • Domin Servo Valve Direct Drive Valve S12Pro Frequency Response Graph Chart
    Frequency Reponse
  • Domin Servo Valve Direct Drive Valve S12Pro Pressure Gain Graph Chart
    Pressure Gain

Normal Operating Conditions

Min.

Typ.

Max.

Supply Voltage

V

22

24

30

Absolute maximum current draws

A

–

–

4.5

Normal Operating Conditions*

Min.

Typ.

Max.

Supply Voltage

V

-10

–

10

Output Signal**

V

-10

–

10

* Operation of the product outside of the nominal operation conditions is not guaranteed and may affect product reliability.

** The valve supply must be protected with a 5 AT fuse or equivalent overcurrent protection device.

Normal Operating Conditions

Min.

Typ.

Max.

Supply Voltage

mA

20

–

20

Output Signal

mA

20

–

20

Normal Operating Conditions

Min.

Typ.

Max.

Differential Input Signal

mA

4

–

20

Differential Input Signal for drive off

mA

-20

–

2

Type: Case Mounted
Termination: Connector according to EN 175201-804/MIL 5015 equivalent, shell size 14
Number of Contacts: 7

Pin

Function

Desc.

A

Supply +

+24 V

B

Supply 0 V

0 V

C

Output –
Enable Input

Output 0 V Reference
Drive Enable Input*

D

Input +

Differential Input, +

E

Input –

Differential Input, –

F

Output +

Output Signal

G

Earth

–

* When the enable function is selected, the function of pin C is the enable input. This replaces the standard pin function.

Unit Dimensions

Nominal dimensions are displayed in mm. Bracketed dimensions are in inches. Not to scale.

Mounting Surface Pattern

Dia Ø
mm

X Position
mm

Y Position
mm

P

20

50

14.3

A

20

34.1

55.6

B

20

65.9

55.6

T

20

18.3

14.3

L

6.3

0

34.9

X

6.3

76.6

15.9

Y

6.3

88.1

57.2

F1

M10

0

0

F2

M10

101.6

0

F3

M10

101.6

69.9

F4

M10

0

69.9

F5

M6

34.1

-1.6

F6

M6

50

71.5

* Valves includes seal grooves for X and Y ports for installation in existing systems X and Y connections are NOT required for valve operation.

Bolts (F1, F2, F3, F4)

Type: M10 x 60 DIN ISO 912-12.9
Req.Torque: 65 Nm (47.95 ft-lbf)

Bolts (F5, F6)

Type: M6 x 60 DIN ISO 912-12.9
Req.Torque: 13 Nm (9.59 ft-lbf)

O-Rings (P, A, B, T)

Type: 21.89 x Ø 2.62 (ISO 3601)
Material: NBR or Viton, 90 Shore A

O-Rings (L, X, Y)

Type: 10.32 x Ø 1.78 (ISO 3601)
Material: NBR or Viton, 90 Shore A

Standards Reference

EMC Regulations: Immunity: EN 61000-6-2, Emission: EN61000-6-3
Performance Tests: ISO 10770-1
Pressure Rating: ISO 10771
Hydraulics Interface: ISO 4401-07-07*

* Ports over-sized to Ø 20 mm.

Ordering Code

S12 Pro 1 2 3 4 5 6 7 8 9

Any value in range 250 to 660*

Rate flow in l/min for 35 bar ∆P per control edge

R – Suffix for reversal of A and B port e.g. 200R

* Flow rating set in valve software – dynamic performance measured set at 250 l/min flow

A

Axis cut (1% overlap linearized)

O

3% Overlap (linearized to 50% gain over center)

D

10% Overlap (with flow dead band)

X

For other options please enquire

A

± 10 V

B

± 20 mA

C

4 to 20 mA

X

For other options please enquire

For differing input and output signals, use two letters,
e.g. AC denotes ± 10V input and 4 to 20 mA output

C

Center

X

For other options please enquire

E

6 pin + PE circular connector

X

For other options please enquire

Y

Enable mode on

N

No enable functionality

R

Recommended – any hydraulic oil in accordance with DIN 51524.

X

For other options please enquire

N

Nitrile

V

Viton

X

For other options please enquire

Assigned individually to any with customized options upon enquiry

Variants on Request

Domin is proud of their ability to offer tailored solutions that meet customers’ specific needs. If you require a non-standard configuration, or a bespoke modification, we are confident we can provide you with the best solution. Talk to us here and one of our team will respond as soon as possible.

Domin is a supplier and servo valve manufacturer for various applications including blow/injection molding, wood/timber machines, simulation, gas, steam, & hydro turbines, hydraulic presses, and vibration equipment.

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10,000 PSI Valves

Hydraulic 10,000 psi valves including Manual Valves, Directional Control Valves, and Relief Valves. These valves are all rated up to 10,000 psi (700 bar), though they can handle pressures much lower.

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10,000 PSI Valves

Hydraulic 10,000 psi valves including Manual Valves, Directional Control Valves, and Relief Valves. These valves are all rated up to 10,000 psi (700 bar), though they can handle pressures much lower.