Hydac
- Offer Profile
- Hydac is your competent
partner for all projects requiring fluid technology in connection with
hydraulics, electronics and engineering.
Our supply program includes hydraulic accumulators, fluid filters, process filters, coolers, electrohydraulic controls/industrial valves, sensor systems for pressure, encoder measurement and solenoid technology, cylinders, pumps, mounting technology, armatures, Condition Monitoring and many more. We plan and supply ready-for-use hydraulic control and drive systems, including electronic controls and regulators for mobile and stationary machines and plants for a wide array of industries.
In doing so, we rely on our many years of experience and on engineering support for the design of even complex electrohydraulic drive systems.
Product Portfolio
Filtration and fluid conditioning
Fluid conditioning systems
Dewatering and other fluid conditioning
- With the dewatering, degassing and other fluid servicing
and care systems, HYDAC offers an extensive product range of professional
solutions for oil servicing and care in bypass flow for hydraulic and
lubrication media. The product programme from HYDAC encompasses both mobile
and stationary servicing and care systems.
- Dewatering through vacuum or coalescence procedures
- Elimination of acids and oil ageing products
- Degassing and servicing and care of transformer oil
- Deoiling of water
Stationary filter systems
- With the stationary filter systems, HYDAC offers you an
extensive product range of professional solutions specially designed for
utilisation in the bypass flow for the permanent filtration of hydraulic and
lubrication media.
The wide array of different variant devices are permanently installed in the bypass flow and are used for the separation of solid particles (with or without integrated fluid sensors).- Bypass flow filters for working filtration
- Simple retrofitting on existing plants
- Relieved load on the main flow filter
- Increased system availability
- Increased service lifetime for hydraulic and lubrication media
- Reduction of Life Cycle Cost
Mobile filtration systems
- With the mobile filter systems, HYDAC offers an extensive
product range of professional solutions for hydraulic servicing and
maintenance. They are used for the filtered filling and/or repumping of
hydraulic and lubrication media, for flushing at the time of startup or for
continuous offline filtration. Convenient mobile devices are used for the
separation of solid particles (with or without integrated fluid sensors) on
several plants at once:
- Portable filtration units
- Mobile filtration units
- Clean filling and flushing
- Flexible utilisation on different plants
- Relieved load on the main flow filter
- Increased system availability
- Increases the service lifetime for hydraulic and lubrication media
- Reduction of Life Cycle Cost
Hydraulic and lubrication filter
Filter assemblies
- Our products of filters are:
- Tank breather filters
- Block mounting filters
- Inline filters
- Offline filters
- Return line & Suction Boost Filters
- Return line filters tank mounting
- Suction filters
- Special filters
Filter Elements
-
THE HEART OF THE
FILTER!
The operating fluid passes through the filter element and is thereby reliably relieved of solid particles and other fluids. Depending on the requirements and the hydraulic filter construction, various filter materials (surface/depth filters, coarse/fine filters), filtration ratings (1 to 200 µm) and designs (return line/suction/pressure filter elements) are used.
Clogging indicators
- Filter clogging indicator are used for monitoring the
filter.
If the contamination of the filter element increases, then the loss of pressure in the filter housing will rise. As soon as a particular limit value is reached, the clogging indicator indicates an imminent element replacement.
Spare parts and accessories
- Spare parts and accessories for HYDAC oil filters are:
- Other adaptors
- Connector plugs
- Silicagel filling
- Repair kits / seal kits
- Dirt retainers
- Clogging indicator adaptors
- Heads
- Bowls
- Cover plates
- Other spare parts and accessories
Process filter
Filter assemblies
- Core competencies & range of products
- Automatic back-flushing and self-cleaning filters AutoFilt®
- Inline- and basket filters in single and double execution
- High pressure filters
- Gas filters (Seal Gas Filter, Fuel Gas Filter)
- Combination of centrifugal separator and inline filter
- Filter systems and filter stations
- Back-flush treatment units
- Bag filters
- Customer specific filter elements and housings
Filter elements
- The core of each filter
- Slotted tube and wire mesh filter elements
- Inline- and pressure filter elements
- Filter elements for gas filters
- Screen basket filter elements
- PELF1 Inline filter elements
- Filter bags
- Stainless steel filter elements
- Polymer filter elements
- Special elements according to customer specification (designed for filtration of polymer melts, acids, alkalis, water, superheated steam, gas)
Filter stations
- For the different filtration tasks, HYDAC Process Technology GmbH also offers filter stations comprised of several filters, filters including supply pump, filters including back flush treatment unit (BTU) and much more.
Diesel fuel filters
Filter housings (on board)
- Our "HYDAC Diesel PreCare" solution for efficient Diesel
filtration is available as a cup filter in two versions:
- Diesel Pre-Filter in BestCost Design with manual water drainage as user-dependent solution.
- Diesel Pre-Filter in HighTech Design with fully automatic drainage Plug&Play as innovative solution for user-independent, fully-automatic dewatering, even during suction operation.
Filter elements
- The innovative design of the Dieselmicron® filter elements with two-stage construction offers outstanding, contamination-independent moisture separation in simultaneous combination with outstanding particle separation.
Units
- Consumers with large tanks which are only seldom used and
in which the diesel is “stored” for a long time are particularly prone to
heavy deposits of contamination in the form of particle contamination on the
tank floor as well as to raised water content in the tank.
With its water elimination function, the LowViscosity Unit LVU-CD can prevent premature and expensive disposal of the diesel (when it becomes unusable due to diesel bug).
Hydraulic accumulators
Bladder accumulators
Low pressure bladder accumulators
- Bladder accumulator are hydropneumatic accumulators with
a flexible bladder as a separation element between a compressible gas
cushion and the operating fluid.
HYDAC bladder accumulators are comprised of either a welded or a forged pressure vessel, the accumulator bladder and the armatures for the gas-side and fluid-side connection.
In addition to the standard construction design, custom designs for special application cases are also available, in particular for very high discharge velocities (e.g. up to 100 l/s) and pressures (e.g. up to 1,000 bar).
SB16/35A(H)-.../SB40-...
V = 2.5 ... 450 l
p = 16 ... 40 bar
Standard/high pressure bladder accumulator
- Essential specifications are:
- Nominal volume: 0.5 ... 450 l,
- Permitted operating pressure: up to 1,000 bar
- Standard elastomers: NBR, ECO, IIR, FKM (FPM).
- Accumulator shell materials: carbon steel, stainless steel, aluminium.
SB...
V = 0.5 ... 200 l
p = 330 ... 1,000 bar
Bladder accumulator unit ACCUSET
- The following advantages set HYDAC bladder accumulators
apart:
- high discharge speeds,
- no pressure differential between fluid side and gas side,
- compact, low-maintenance
- high charging and discharge frequencies.
ACCUSET SB...
V = 1.0 ... 50 l
pmax = 330 bar
Piston accumulators
Standard/high pressure piston accumulator
- SK...
V = 0.2 ... 3,300 l
p = 210 ... 1,000 bar
To protect your hydraulic accumulators against
non-permitted temperature increase and/or excessive pressure,
we recommend our safety devices.
Piston accumulators with position indicator
- Piston accumulators from HYDAC can be equipped with
different systems for monitoring the piston position in the piston
accumulator.
These are, e.g.:- electrical limit switch
- protruding piston rod
- magnetic flapper indication
- magnetic piston
- cable tension measurement system
- ultrasonic measurement system
- ultrasonic position switch (also in ATEX version)
- fixed and adjustable special switches
Diaphragm accumulators
Diaphragm accumulators welded types
- Diaphragm accumulatorsare
hydropneumatic accumulators with a flexible diaphragm as a
separation element between the compressible gas cushion and
the operating fluid. HYDAC offers more than 30 diaphragm
accumulator variants and more than 300 different fluid
connections. HYDAC diaphragm accumulators are designed
thereby either as weld type or as screw type and offered in
various different steels, elastomers and with different gas
ports.
Diaphragm accumulators threaded types
- Essential specifications are:
- Nominal volume: 0.075 ... 4 l,
- Permitted operating pressure: 40 ... 750 bar,
- Elastomers: NBR, ECO, IIR, FKM (FPM) and others,
- accumulator shell materials: carbon steel, stainless steel, aluminium and
- others.
- design optimised for function and weight,
- choice of installation positions,
- no pressure differential between fluid side and gas side,
- low-maintenance and long service life.
Metal bellows accumulator
- Metal bellows accumulators are hydropneumatic accumulators with a metal bellows
as a separation element between the compressible gas cushion and the
operating fluid. The separation element is designed as either a bellow or as
a welded diaphragm bellows.
HYDAC metal bellows accumulators are versatile in their application. For example, they are used for pulsation damping on heavy diesel engines or in the chemical industry. In the aeroplane industry, this type of accumulator design is usually used as energy accumulators or for volume compensation, respectively.
Essential specifications are:- Nominal volume: up to 6 l,
- Permitted operating pressure: up to 210 bar
The following advantages set HYDAC metal bellows accumulators apart:- gas-tight,
- maintenance-free,
- media-resistant over a wide temperature ranges.
Hydraulic dampers
Pulsation dampers SB
- Pulsation dampers are comprised in general of bladder,
piston and/or diaphragm accumulators, each equipped with or without the
blocks guiding the fluid flow in and out.
SB...P(H)-...
V = 1 ... 32 l
p = 330 ... 1,000 bar
High-Flow-Version: Qmax = 30 l/s
Pulsation dampers welded types SBO
- Pulsation dampers are comprised in general of bladder,
piston and/or diaphragm accumulators, each equipped with or without the
blocks guiding the fluid flow in and out.
SBO...P-...E1
V = 0.075 ... 4 l
p = 50 ... 330 bar
Pulsation dampers threaded types SBO
- Pulsation dampers are comprised in general of bladder,
piston and/or diaphragm accumulators, each equipped with or without the
blocks guiding the fluid flow in and out.
SBO...P-...A6
V = 0.2 ... 4 l
p =10 ... 500 bar
Suction flow stabilisers
- Suction flow stabilizers and silencers are based on
different construction principles.
Volume and/or pressure fluctuations occurring in fluid technology systems have a negative effect on the function and service life of the individual components in the system. The use of hydropneumatic dampers, following a precise analysis of the system and subsequent dimensional determination of the damper, can dampen these pulsations. This means that the utilisation of HYDAC hydraulic dampers brings economic advantages and process reliability.
SB16/40S-...
V = 12 ... 400 l
pmax = 40 bar
Silencers
- Volume and/or pressure fluctuations occurring in fluid
technology systems have a negative effect on the function and service life
of the individual components in the system. The use of hydropneumatic
dampers, following a precise analysis of the system and subsequent
dimensional determination of the damper, can dampen these pulsations. This
means that the utilisation of HYDAC hydraulic dampers brings economic
advantages and process reliability.
SD...
V = 0.5 ...5.5 l
pmax = 330 bar
Special accumulator
- HYDAC is the only manufacturer to supply all of the accumulator types from its own R&D, design and production. Bladder, piston and diaphragm accumulators are the best-known types of accumulators. Customer-specific, industry-specific and market-specific further developments and new developments are being pushed permanently and continuously, including such special designs as spring accumulator and light-weight accumulator. As a result, not only can the most comprehensive standard program be offered, but also special accumulator technology solutions can be conceived which are optimally tailored to individual cases, and also of course as complete systems.
Accumulator stations
- Accumulator stations are completely piped, operationally
ready accumulater systems with all necessary valves, fittings and safety
devices as individual accumulator unit or back-up version with nitrogen
bottles to increase the effective volume. The HYDAC system concept creates a
HYDAC system by combining many individual HYDAC components into a for
example bladder or piston accumulator station.
Accumulator accessories
charging and testing unit
- The HYDAC universal charging and testing unit FPU-1, is used to charge bladder, piston and diaphragm accumulators with nitrogen, or to test and alter the pre-charge pressure. Due to the wide product range of gas-side adapters to the accumulator and to the nitrogen bottle, HYDAC ensures the charging of practically all hydraulic accumulators. An extensive product range of accessories, e.g. hoses, the pressure-reducing valve and also the case, can be assembled in accordance with customer preferences to round out the programme.
charging and testing block
- HYDAC charging and testing blocks F + P is used to charge and test back-up type hydraulic accumulators and separate the back-up nitrogen bottles from the hydro-accumulator. They have connections for manometer and FPU-1 and a bore hole for screwing in the gas safety valve GSV6 in accordance with DGRL 97/23 EG with CE label, which can serve as an additional safety element.
Nitrogen bottles
- HYDAC nitrogen bottles are used to store nitrogen. HYDAC
offers a wide range of bottle types, such as forged vessels and bladder,
piston and diaphragm accumulator vessels.
Using the HYDAC nitrogen bottles results in the following advantages:- cost-effective increase of the accumulator volume and as a result
- smaller accumulators for the same gas volume.
Accumulator safety elements
- Safety devices, so-called "devices with a safety
function", are used for gas-side protection of the hydraulic accumulator
against non-permitted excessive pressures and/or pressure increases
resulting from non-permitted temperature increases.
In detail these are:- Burst disk,
- temperature fuse and
- gas safety valve.
- HYDAC safety devices have a CE marking and are shipped with a declaration of conformity.
Safety and shut-off blocks
- The versions of the HYDAC safety and locking block SAF,
its special versions and the DSV10 as a simple variant of the SAF10, are
practical hydraulic accessories for blocking and relieving hydraulic
accumulators or consumers. They are in compliance with safety regulations in
accordance with DGRL97/23/EG, DIN EN 982, EN 14359 and the regulations of
the Ordinance on Industrial Safety and Health [Betriebssicherheitsverordung
(BetrSichV)].
The optimum combination of the safety and shut-off blocks considerably simplifies the connection between the consumer and the hydraulic system
Accumulator-Mounting elements
- Independently of installation position and installation site, HYDAC mounting elements enable a simple and secure installation of all hydraulic accumulators. Clamps, consoles and complete accumulator sets from HYDAC are intended for static application. HYDAC naturally also provides special mounting elements for dynamic stress upon request.
Nitrogen charging units N2-Server
- he HYDAC N2-Server range includes mobile - portable and
wheeled - and also stationary units. It is used for the charging of
accumulators, for supplementing the pre-charge pressure and/or for the
charging of accumulator stations. . In addition, the devices are equipped
with a pressure limiting in accordance to accident prevention regulations.
The following advantages set HYDAC nitrogen charging unit N2 apart:- rapid and cost-effective charging of all HYDAC accumulator types,
- optimum utilisation of commercially available nitrogen bottles up to 20 bar residual pressure,
- maximum accumulator charging pressure up to 350 bar (special versions possible).
Accumulator charging valves
- HYDAC accumulator charging valves control the charging of
the hydraulic accumulator within an adjustable switching range. As a result
of the combination of HYDAC hydraulic accumulators and HYDAC accumulator
charging valve, pumps and motors on oil-hydraulics systems with fluctuating
flow rate requirements can be dimensioned smaller.
This saves on both costs and energy - an unnecessary heat generation is thus avoided.
The following advantages set HYDAC accumulator charging valves apart:- simple and optimal system adoption by valves with different fixed switch-pressure differentials (12, 16, 21%),
- Switch-off pressures within the pressure ranges 100, 250 und 350 bar free adjustable,
- low cycle-delta-p,
- no unwanted discharge of the accumulator by leakage-free poppet valves,
- subplate mounting and version for inline connection available,
- by integration of the shut-off valve no additional mounting effort has be done.
Valves
Pressure valves
Pressure relief valves poppet, direct
- HYDAC direct acting pressure relief valves are spring-loaded cone- or ball-type poppet valves which limit the pressure in hydraulic systems out of safety reasons. A leakage-free securing of consumers and systems is enabled. Different pressure ranges enable an optimum system adjustment.
Pressure relief valves, pilot spool
- HYDAC pilot operated pressure reducing valves are spring-laoded spool valves which control the pressure of consumers in hydraulic systems in the elevated performance range. The outlet pressure to the consumer is kept constant, even as the inlet pressure or the consumer flow rate fluctuates. Precondition: inlet pressure is bigger than the outlet pressure. Different pressure ranges enable an optimal system adjustment.
Pressure reducing valves, pilot operated
- HYDAC pilot operated pressure reducing valves are spring-loaded spool valves which control the pressure of consumers in hydraulic systems in the elevated performance range. The outlet pressure to the consumer is kept constant, even as the inlet pressure fluctuates. Precondition: inlet pressure is bigger than the outlet pressure. Different pressure ranges enable an optimal system adjustment.
Pressure relief valves, spool type direct
- HYDAC direct acting pressure relief valves in spool type version are spring-loaded spool valves which limit the pressure in hydraulic systems out of safety reasons. Different pressure ranges enable an optimal system adjustment.
Pressure relief valves, type pilot poppet
- HYDAC pilot operated pressure relief valves in poppet version are spring-loaded poppet valves which limit the pressure in hydraulic systems in the elevated performance range. Different pressure ranges enable an optimal system adjustment.
Pressure sequence valves
- HYDAC pressure sequence valves are used for hooking on consumers in hydraulic systems once a particular primary pressure has been reached. The valve is closed until this pressure is reached; it is not until the set pressure is reached that it opens to the consumer
Flow valves
Needle valves
- HYDAC needle valves are manually actuated flow valves for influencing a flow rate by means of an adjustable cross-section using a throttle spindle. The flow rate is dependent on differential pressure and viscosity. A turning knob with scale ring allows a sensitive reproducibility of the set values. Various installation sizes enable an optimal system adjustment
Needle valves hydraulically actuated
- HYDAC needle valves with hydraulic actuation are direct acting valves with initially fully open position which move into throttle position when charged by hydraulic stress.
Needle valves with reverse flow check
- HYDAC needle valves with reverse flow check are equipped with throttle spindle and turning knob for influencing the flow rate by means of an adjustable cross-section in one direction. There is free flow in the opposite direction. Fine adjustment of the flow rate by means of specially formed throttle spindles; e.g. for the velocity control of loaded consumers.
Flow control valves pressure compensated
- HYDAC pressure compensated flow control valves are valves with fixed orifice with an integrated differential pressure compensator which are keeping the outlet flow constant. The built-in pressure compensator makes these valves independent of pressure and viscosity.
Flow control valves priority style
- HYDAC priority style flow control valves are valves with fixed orifice and integrated differential pressure compensator which keep the outlet flow constant. The flow which is not taken by the main consumer can be provided at the bypass port for the supply of secondary consumers. The built-in pressure compensator makes these valves independent of pressure and viscosity.
Pressure compensators
- HYDAC pressure compensators are direct acting, spring-loaded spool valves and are used for load pressureindependent regulation of flow rates of consumers. When switched together with manually actuated or proportional needle valves, pressure compensators can be used for the load-independent lifting and lowering of variable loads at the same velocities. They act thereby as pressure compensated flow control valves.
Flow divider / combiner
- HYDAC flow dividers are spool valves with two measuring orifices which divide a flow rate into 2 flows and keep it constant at a fixed ratio. The built-in pressure compensator makes these valves nearly independent of pressure and viscosity.
Check valves
Check valves with hardened seat
- HYDAC check valves are spring-loaded poppet valves which permit the flow in one direction and blocks it in the opposite direction.
Check valves pilot-operated
- HYDAC pilot-to-open check valves are spring-loaded poppet valves which permit the flow in one direction and blocks it in the opposite direction. By applying a sufficient pressure at third port the valves opens even in the opposite direction
Counter balance valves
- HYDAC counterbalance valves are direct acting poppet valves with integrated check valve which enable a jerk-free movement on the part of consumers in the presence of over-centre loads. A hurrying ahead of the pulling consumer is avoided. Preferred application for safety and control tasks with double acting consumers, aligned downstream of the consumer.
Hose break valve
- HYDAC hose break valves are cartridge valves of flat-seat design. They are used to avoid non-permitted movement of the consumer in the event of hose breakage. They are flow-rate dependent switching
Shuttle change-over valves
- HYDAC shuttle valves are shut-off valves with one outlet and 2 inlet ports. The inlet port with the higher pressure is connected automatically with the outlet port. The other port is closed in this case. Preferred application in control circuits with pilot-operated and remote-controlled directional valves as well as displacement and regulating pumps
Motor start hydaulic capacitors
- The motor starting valve MAV-M14x1.5 is a poppet valve
and is normally open. It closes when a certain flow rate is reached, and
therefore allows a motor to be started more easily. Cavity (metric) M 14 x
1.5.
Qmax = 20 l/min
Pmax = 350 bar
Directional valves solenoid operated
2/2 directional poppet valves
- Description
3/2 directional poppet valves
- HYDAC 3/2 directional poppet valves are electromagnetically actuated, direct acting or pilot-operated poppet valves, which influence the flow-path of a medium, i.e. blocking, dividing, permitting it.
2/2 directional spool valves
- HYDAC 2/2 directional valves are electromagnetically actuated direct acting spool valves, which influence the flow-path of a medium, i.e. blocking, dividing, permitting it.
3/2 directional spool valves
- HYDAC 3/2 directional spool valves are electromagnetically actuated direct acting spool valves, which influence the flow-path of a medium, i.e. blocking, dividing, permitting it. HYDAC offers an extensive product range of switching functions.
4/2 directional spool valves
- HYDAC 4/2 directional control valves are solenoid actuated, direct acting spool valves, which influence the path of a flowing medium, i.e. block, permit, divide, combine it. HYDAC offers an extensive product range of switching functions.
4/3 directional spool valves
- HYDAC 4/3 directional spool valves are solenoid actuated, direct acting valves, which influence the path of a flowing medium, i.e. block, permit, divide, combine it. HYDAC offers an extensive product range of switching functions.
Hydraulically operated directional valves
Directional spool valves
- Hydraulically actuated directional spool valves ensure a secure connection between paths at the time of their actuation.
Manually operated directional valves
2/2 directional poppet valves
- Manually actuated 2/2 directional poppet valves influence the flow path of medium at the time of their actuation. They are leakage-free and are designed as cartridge and plate-mounted valves.
Directional spool valves
- Manually operated directional spool valves influence the path of a flowing medium at the time of their operation. They are available as cartridge and subplate mounted valves.
Proportional valves
Proportional pressure relief valves
- HYDAC proportional pressure relief valves are continuously adjustable valves which limit the output pressure depending on the electrical current. These valves exist as leakage-free poppet valves and spool valves with defined leakage, in direct acting or pilot-operated design.
Proportional pressure reducing valves
- HYDAC proportional pressure reducing valves are continuously adjustable valves which control the pressure of the consumer depending on the electrical current. An additional function is the maximum pressure protection. These spool valves are available in direct acting or pilot-operated design.
Proportional needle valves, poppet-type
- HYDAC proportional needle valves are direct acting or pilot-operated poppet valves. They continuously change a throttle cross-section and thus the output size of the flow rate of the consumer - depending on the electrical current.
Proportional needle valves, spool-type
- HYDAC proportional needle valves are direct acting or pilot-operated spool valves. They continuously change a throttle cross-section and thus the output size of the flow rate of the consumer - depending on the electrical current.
Proportional flow valves
- HYDAC proportional flow control valves are direct acting or pilot-operated spool valves. They continuously change a throttle cross-section and thus the output size of the flow rate to the consumer - depending on the electrical current. A built-in pressure compensator ensures that the regulated flow is independent of pressure and viscosity.
Proportional directional valves
- HYDAC proportional directional valves are spool valves which continuously influence the path of a flowing medium - depending on the electrical current.
Slip-in cartridge valves (logics)
2-port slip-in cartridge valves
- 2-port slip-in cartridge valves (also: "Logics") from HYDAC are the valves with the highest performance and largest-size. They are controlled by thecorresponding cover with built-in pilot valves, which make the high pressures and flow rates possible.
Covers for 2-port slip-in cartridge valves
- Control covers for cartridge valves contain the pilot control for the flanged built-in valve functions. They can be combined with the valves from our cartridge valve program - so that the complete product range could be delivered from HYDAC.
Accessories for 2-port slip-in cartridge valves
- Adequate original accessories like seals and springs for the cartridge valve program - is available from HYDAC which ensures the functionality of our valves long-term and which fits exactly to the respective valve.
Coaxial valves
Direct acting
- Function
pressure-compensated, direct acting 2/2 & 3/2 way coaxial valves in NC and NO version
Media
gaseous, fluid, high-viscosity, gelatinous, paste-like, contaminated, aggressive
Versions
brass, brass nickel-coated, free of non-ferrous metal, stainless steel
* the material specifications are in reference to the parts in contact with the medium
Coaxial valves pilot operated
- Function
pressure-compensated, pilot operated 2/2 & 3/2 way coaxial valves in NC and NO version
Media
gaseous, fluid, high-viscosity, gelatinous, paste-like, contaminated, aggressive, cooling lubricants
Versions
brass, brass nickel-coated, free of non-ferrous metal, stainless steel
* the materials specifications are in reference to the parts in contact with the medium
Manifolds, housings
Valve stacking systems
- HYDAC series connection systems of the type series L and ML are controls made up of individual modules for oil-hydraulic plants in parallel switching. These systems are preferably designed for the control of small-volume consumers and for pressure-/force-holding tasks. Function modules with directional poppet valves, pressure and shut-off valves and pressure switches can be combined on a base module in any order in accordance with the sequence of the control tasks. The end is represented by an end module with or without additional functions.
Internal valve housings
- HYDAC pipeline housings are housings which are installed directly in the pipeline and which are additionally equipped with such functions as checking, throttling and flow regulation. Low line losses and space-saving installation are the advantages here.
Manifold housings
- HYDAC manifold housings are produced in-house for a large number of cartridge valves from our programme, thus making them an ideal supplement made up of valve and precisely fitted housing.
Shock valve housing
- HYDAC shock valve housings are the secure way to protect consumers against overloads. The constellation of two built-in pressure relief valves which generate a short circuit of the connected consumer in the event of an overload is the best way to intercept peak pressures and to safeguard the system.
Manifolds
- Customer-specific manifolds from HYDAC are series-produced for many hydraulic customers around the world and tested exactly in accordance to their requirements. Development, prototyping and serial production are carried out in-house.
Inline connection housing
- The HYDAC inline connection housing programme is the most secure way to install single cartridge valves in hydraulic systems. All necessary ports are incorporated and available in standardised form. Short delivery times are standard because of delivery of stock.
Subplate housings
- Compatible with the inline connection housings, HYDAC offers subplate housings for many cartridge valves and thus rounds off the housing product range.
Cylinder connection housings
- Cylinder connection housings from HYDAC are screwed directly onto cylinders. For this purpose they are equipped with a special hollow screw which can optionally be equipped with a flow control valve. This ensures a direct and immediate function at the consumer.
Manifold accessories / spare parts
- All of the components produced by HYDAC which are used in the manifold, e.g. valves, coils, sealing sets, etc., as well as connectors and mini-measurement couplings, can be ordered as replacement parts by the customer. Short delivery times ensure short downtimes.
Lift-lowering manifolds HSB
- HSB control blocks from HYDAC are designed for the complex and flexible requirements in the area of lifting technology. They are tailored solutions for lifting-lowering controls. Applications include, for example, scissor-lift platforms, small lift trucks and pallet trucks. The permissible load is secured by means of an integrated pressure relief valve. The 2/2 two-way pilot valve is equipped with manual emergency lowering with self-actuating reset. A built-in return valve prevents uncontrolled lowering. A measurement connection is provided for for easy pressure measurement.
Modular Manifold System
- The performance range in modules with proportional spools
is up to 35 l/min and in black/white modules up to 70 l/min. It is foreseen
for the complex and flexible demands of the mobile hydraulics (e.g.
municipal , agricultural and construction machines).
The system is based on reliable valve technology from HYDAC. The special requirements of the mobile branch have been incorporated: compact, enlargeable, weight-optimized and service-friendly.
Heat exchangers / coolers
Air cooler
Low noise series AC-LN
- The AC-LN series is the latest development of the HYDAC Air Cooler family. It is the optimised and low-noise version of OK-EL coolers. With same dimensions and same cooling capacity it is more energy efficient with a significant lower noise level. Sizes from AC-LN 8-14 and a wide range of accessories allow flexible adaptation to various applications to cool industrial hydraulic systems.
Standard series OK-EL
- Our standard series oil-air cooler OK-EL is used to cool
industrial hydraulic systems.
Different sizes and series and a wide range of accessories allow flexible adaptation to various applications.
Low-noise SC series
- The low-noise oil-air coolers of the SC series with radial fan are used for cooling small and medium-sized hydraulic systems. The versions with built-in pump (SCA) and filter (SCAF) represent a highly efficient bypass flow cooling and filtration.
Compact series OK-ELC
- The OK-ELC oil-air cooler was specially developed for industrial hydraulic applications for which high performance is required, while simple installation in the smallest possible installation space must be possible.
Mobile series OK-ELD
- The OK-ELD series with DC motor was specially developed for mobile hydraulic systems for which the combination of simultaneous high performance, compact construction and simple installation is required.
Mobile series OK-ELH
- The coolers of the OK-ELH series are equipped with a hydraulic motor and were specially developed for mobile applications for which high performance and simple installation on the smallest possible installation space must be guaranteed.
Plate Heat Exchanger
Brazed plate heat exchangers
- Brazed plate heat exchangers are comprised of a number of
moulded stainless steel plates which are vacuum-brazed with copper or
nickel.
The special moulding of the plates ensures a turbulent flow which is necessary for an optimum heat transfer and which furthermore brings about a self-cleaning effect, because deposits on the surface are reduced by the high level of wall friction.
Gasketed plate heat exchangers
- Gasketed plate heat
exchangers are comprised of a package of individual, moulded heat exchange
plates made of stainless steel or titanium, for which seals ensure the
separation of the media.
In the case of safety plate heat exchangers, 2 plates are brought together as a pair and welded to the connections. In the event of leakage at one of the two plates, the fluid runs into the intermediate space and emerges outside. This means that a mixing of the media can be prevented.
Pump-transfer cooler filtration units
UKF-1
- Compact bypass unit comprised of
- low-noise feed pump
- filter
- plate heat exchanger
Flow rate: 5 - 15 l/min
UKF-2
- Compact bypass unit comprised of
- low-noise feed pump
- filter
- plate heat exchanger
- Integrated valves for blocking the bypass flow circuit at the time of filter replacement
Flow rate: 15 - 60 l/min
UKF-3
- Compact bypass unit comprised of
- low-noise feed pump
- filter
- plate heat exchanger
- Integrated valves for blocking the bypass flow circuit at the time of filter replacement
Flow rate: 20 - 200 l/min
Cooling system
Refigerator units
- Connection-ready cooling units for closed circuits for
which a recooling of the coolant to a level equal to or lower than the
ambient temperature is necessary.
Characteristics:- Cooling capacity up to 12.5 kW
- Flow rate up to 50 l/min
- Tank content up to 150 l
Fluid-air cooling systems FLKS
- The FLKS is a compact, complete fluid-air cooling system,
which is used primarily for cooling and lubrication circuits.
The cooling system is modular in structure and is comprised of one axial or radial fan, one tank with circulating pump and one heat exchanger.
Fluid-water cooling systems FWKS
- The FWKS is a compact, complete fluid-water cooling
system for cooling and lubrication circuits.
This system is primarily used as a temperature-controlled intermediate circuit. The advantage of an intermediate circuit is that the system or the parts being cooled do not come into contact with the actual coolant, i.e. water, which helps to prevent contamination or corrosion of the system.
The FWKS is comprised of one plate heat exchanger, a tank with a circulating pump and additional accessories.
Pumps
Feed pumps
- Feed pumps in vane-type construction with constant supply
volume.
Typical applications:- Filter circuits
- Cooling circuits
- Lubrication technology
- Pump transfer units
Axial piston pumps
- HYDAC axial piston pumps for open circuit in swash plate design are available in the pressure ranges medium and high, and feature a specific displacement flow of 10 cm³/rotation to 560 cm³/rotation.
Vane type pump
- Our vane pumps for open circuit are available as either fixed displacement or variable displacement pumps.
External gear pumps
- Available in four different sizes, with very narrow-stage specific displacement flow and a large range of flange and shaft designs. Our external gear pumps can be used in many various applications and industries. HYDAC external gear pumps are also available as multiple pump combinations (PGE104).
Internal gear pumps
- Our internal gear pumps are characterised by extremely low noise levels, low pulsation and a very large speed range. The internal gear pumps are available in various sizes and pressure levels from 3.8 cm³/rotation to 250 cm³/rotation up to a max. nominal pressure of 330 bar. HYDAC internal gear pumps are also available as multiple pumps.
Bell housings and accessorie
Flexible bell housing
- HYDAC flexible bell housings enable the precisely centred
linkage of IEC motors with hydraulic pumps.
- Bell housings in accordance with VDMA 24561 Form B
- unproblematic replacement of the forms A, B and C with one another possible in accordance with VDMA 24561
- can be supplied for almost all hydraulic pumps
- centred motor shaft and pump shaft
- processing of both flange-mounting sides finished
- Bell housing made of aluminium with damper element made of NBR
- Pressure-loaded damping ring
- Noise-reducing and vibration-damping
- Sizes available for delivery from 200 to 660 (motor size 80 to 315L)
Rigid bell housing
- HYDAC rigid pump supports enable the precisely centred
linkage of IEC motors with hydraulic pumps.
- Pump support in accordance with VDMA 24561 Form A
- unproblematic replacement of the forms A, B and C with one another possible in accordance with VDMA 24561
- can be supplied for almost all hydraulic pumps
- centred motor shaft and pump shaft
- processing of both flange-mounting sides finished
- Pump supports made of aluminium
- Sizes available for delivery from 140 to 800 (motor size 71 to 355 L)
Flexible bell housing with oil-air cooler
- Compact Hydac design and inexpensive solution
- Bell housings in accordance with VDMA 24561 Form C
- unproblematic replacement of the forms A, B and C with one another possible in accordance with VDMA 24561
- can be supplied for almost all hydraulic pumps
- processing of both flange-mounting sides finished
- Bell housings with damping and cooling element (air-oil cooler)
- Fan (is mounted on the motor shaft) included in the scope of delivery
- for 2-pole, 4-pole, 6-pole IEC standard motors (1000 - 3000 U/min)
- type of mounting B5, B35, V1, V15
- Mineral oil to DIN 51524, other fluids on request
- optional with foot brackets
- horizontal or vertical mounting possible
Sensors
Pressure sensors
- Electronic pressure sensors are used for recording
pressures in fluid technology systems. Functionality and form of execution
are determined by the respective utilisation conditions. In order to fulfil
these requirements, HYDAC offers a comprehensive programme from miniature
pressure transducers to customer-specific multiple pressure switches.
Electronic pressure transducers record the measured pressure variable and convert it into a proportional output signal.
Electronic pressure switches record the measured pressure variable, process it and output a switching signal in accordance with the presetting.
Temperature sensors
- For recording and evaluating temperatures, HYDAC offers
temperature transmitters and temperature switches for installation in
pressure lines or for tank mounting.
Temperature measurement transducers record the temperature and convert it into a proportional output signal.
Electronic temperature switches record the temperature, process it and output a switching signal in accordance with the presetting.
Flow rate sensors
- HYDAC ELECTRONIC offers a different of flow rate
measuring transducers and flow switches for recording the flow rate in
machines and plants.
The flow rate measuring transducer of the EVS 3000 series works in accordance with the turbine principle (recording the rpm of an impeller wheel rotating in the media flow). Depending on the version, additional connection openings for pressure and/or temperature transmitters are available.
Level sensors
- Electronic level sensors are used for recording fill
levels in fluid technology systems. In order to fulfil the wide-ranging
customer requirements, HYDAC offers an extensive range of capacitive and
contact-free level switches.
Electronic level switches record the fill level and output one or more switching signals in accordance with the presetting. As an option, the fill level can also be permanently output as an analogue signal (4 ... 20 mA or 0 ... 10V).
Displacement sensors
- Electronic path sensors are used for recording cylinder positions in fluid technology systems. Functionality and form of execution are determined by the respective utilisation conditions. In order to fulfil these requirements, HYDAC offers a comprehensive program, from simple attachment sensor to customer-specific, fully integrated sensor.
Rotation sensors
- Compact and easy to design in, HYDAC's rotationa sensors provide a simple and cost-effective rotational sensing solution. They are ready to use and include the sensor, a back-biasing magnet and an advanced signal conditioning IC.
Contamination sensors
- HYDAC offers an extensive product range of fluid sensors
for recording
Solid particle contamination
Metallic particles or
Fluid contamination (water).
Oil condition sensors
- Oil condition sensors facilitate online monitoring of the oil condition in stationary and mobile applications.
Distance sensors
- The HYDAC ultrasound distance sensors are used for measuring the distance to fluids and objects. As a result of its functional principle (measurement of the sound transmission time), it operates without contact and with a very high resolution and measurement rate.
Measurement, display and analysis tools
Displays
- The universal display device HDA 5500 offers the opportunity for visualisation and further processing of the signals of our sensors. The device is conceived for front-panel installation with standard 92x45 mm cutout.
Measuring instruments
- HYDAC measurement devices are a helpful companion for
many measurement tasks in fluid technology.
HYDAC offers an extensive array of easy to use measurement systems. Whether it be solid particles or fluid contamination, for sporadic checking or as a permanent installation, under rough field conditions or in the laboratory.
Analysis instruments
- HYDAC analysis devices are utilised in particular where processes are to be analysed and optimised professionally in the context of a Contamination Management (cleanliness management) from the point of view of the cleanliness of components, systems and the fluids used.
Control Technology
Components for systems
Modules
- HYDAC control modules are eminently suitable for the
control of proportional magnets in applications, e.g. pressure or
directional valves, pumps, etc.
Type series:- Proportional amplifier module EHS 2042
- Signal adjustment module EHS 2092
Fittings / ball valves
Ball valves
- HYDAC ball valves are utilised in all areas of the
hydraulics industry. And not only there:
thanks to their quality and flexibility, out ball valves are also being ever more frequently
in the paper and mobile industry. Ever-increasing quantities of our stainless steel ball valves are
being used in off-shore projects as well, thanks to their extremely long service life and to the great safety they offer.
Accessories powerpack
- Fluid level gauge FSA , Fluid level sensor and
Temperature switch TSE are designd to monitor and control the level of operating fluid.
Many combinations are possible, thanks to the flexible product range
Shut-off valve
- Single station gauge isolators are components used to
pressurised manometers for the time it takes to read the pressure
Single-station gauge isolator can be operated in two ways- push button, the pressure is indicated as long as the button is depressed.
- push button and turn clockwise through 90°, this locks the pressure indication until button is released
Mounting technology
Standard clamps
- Numerous standardised fastening elements are available
for individual applications
- Block clamps in accordance with DIN 3015 T1-3
- Flat steel clamps in accordance with DIN 3567
- Round steel clips in accordance with DIN 3570
Series strips
- Fastening of hose groups and (dynamically loaded)
pipeline groups
- 3 installation sizes
- Heavy series diameter range from 6 - 56.4 mm
- Lightweight series diameter range from 6 - 25 mm
Clamps with rubber body
- Protective and low-vibration fastening of pipes, hoses,
cables and sensors
Advantages of Buegu clamps- defined pretension and defined pressure deformation secure long-term secure seat
- vibration and noise dampening through rubber clamping bodies
- protective component fastening through thermoplastic elastomer
- mineral oil-resistant materialv
- space-saving component fastening with smooth pipe receptacle
- twist-proof, can be mounted one above the other can be mounted on support rail
Oval clamps
- the inexpensive solution for the fastening of pipes,
hoses and cables
Advantages- rapid installation
- low space requirements
- stable fastening by means of cover plate
- different pipe diameters can be combined
- clamp halves connected by film hinge
- Clamp made of PP and PA with a temperature resistance of -40°C to +140°C
- Metallic parts also in stainless steel
Diagonal clamps
- Clamp for dynamically loaded pipelines
10 sizes
Diameter range from 170 - 840 mm
Swivel bolt clamps
- Containers of any shape can be fastened protectively and
securely with HY-ROS clamping bands.
Advantages- simple mounting by quick release system
- axial and radial position correction, also retroactively
- Utilisation at difficult-access positions through freely selectable
- positioning of the fastening system
- Flexibility with different container dimensions and shapes through flexible steel bands
- careful component mounting and insulation against noise and electrostatics through a layer of rubber or PE
- suitable supports for almost every container through selection of shaped parts and plastics
Pipe connections
Screw-in screw-joints
- Joints and connection elements for seamless pipes in
various materials and pressure ranges
Items supplied- male stud couplings
- male stud elbows
- Male stud branch tees
- Male stud barrel tees
Couplings
- Joints for seamless pipes in various materials, pressure
ranges, diameters and versions
Items supplied- Adjustable couplings
- Straight reducer couplings
- Straight couplings
- Equal crosses
- Equal tees
- T reducer couplings
- Elbow couplings
Bulkhead connection
- Bulkhead screwed connections in various versions
- ideal in order to enable optically and functionally perfected connections made of housings, containers, etc.
- Fastening in place with 2 nuts
- only one bore hole is required for a wall passage
- Straight bulkhead couplings
- Elbow-bulkhead couplings
- Sealed bulkhead couplings
Reducing connections
- Reducer connections to the coupling of components with
different diameters
Items supplied- Reducer connections with sealing cone and O-ring
- Reducer connections series L
- Reducer connections series S
High Pressure-Banjo Couplings
- compact elbow-shaped coupling
- for low and high stress in the high-pressure range
- prevents premature wearing caused by bending movements
- non-flow control elbow swivel banjo coupling
- high-pressure elbow swivel banjo coupling
- elbow swivel banjo coupling
- high-pressure T swivel banjo coupling
Couplings for fluids
Quick release couplings
- High-quality quick-action coupling made of steel,
stainless steel, brass or plastic for practically every application
contingency
Very robust, rapid and secure coupling of practically all fluid media. Special solutions for your application needs can also be implemented upon request.
Measurement coupling
- TestPoint is a small measurement coupling with check
valve which can remain permanently in the hydraulic system. The TestPoint
can be used to check the pressure while the system is running, to ventilate
the system or to take a sample of the medium.
In addition, there are also special measurement couplings with check valve which permit not only pressure measurement but also a temperature measurement of the medium.
Small power units
TankSet
- As a provider of system solutions, HYDAC offers all of the accessories which are needed for function, expansion, retrofitting, upgrading, optimisation and maintenance as well as for rapid and complete installation of fluid technology plants.
Compact Units
- Compact power units are the most compact form of hydraulic supply, with minimum installation dimensions and high flexibility in the layout for the customer. Thanks to small flange dimensions and the optional equipment with stacking modules, the unit can be adjusted to accommodate any installation position and be expanded with new functions at any time. Depending on the available installation space, the control can be flanged-mounted directly to the power unit or integrated as a single stacking module near the consumsers.
Hybox
- Hybox - a very compact and efficient small power unit
- Modular valve concept
- Expandable with additional control blocks
- Can be integrated with the HYDAC ML series
- Tank size 20 - 400 l
- Max. pressure 350 bar
- Flow rate: 1 - 60 l/min
- Fast delivery < 3 days
High pressure hydraulics
Pumps
- Our range comprises axial piston pumps, radial piston pumps, combination pumps (combines a radial high pressure piston pump and a gear pump if two hydraulic circuits with different delivery volumes and pressure are required), multi-outlet pumps and ATEX-certificated radial piston pumps. Bieri pumps are suitable for a wide pressure range and displacement.
Valves
- The range of our valves includes all the possible combination of flow, types and operating methods.
Pressure and oil level switches
- The pressure swiches are designed for tough operating
conditions, insensitive to hydraulic overloads; available in 7 pressure
ranges for optimal adaptation to any operating pressure.
The BIERI oil level switches can be delivered with any length up to 1200mm and can be threaded directly into tank cover
Systems for medical applications
- BIERI has a recognized know-how and wide experience in customized components and systems for medical applications. This includes all needs in surgical tables, X-Ray tables, CT-tables, dental chairs, delivery beds and transport units.
Hydraulik systems
- BIERI has a long experience in hydraulic systems and has developed, manufactured and installed custom-made complete systems for all types of industry and services. It includes the small power unit trough to the complex system encompassing any pressure range.
Mobile Hydraulics
Hydropneumatic Suspension
- Intelligent suspension systems for every application.
Load-independent hydropneumatic axis suspension with level regulation, lift function, blocking function, rolling stabilisation, automatic error display, adjustable spring rate and accumulator pressure monitoring.
Electro-hydraulic steering
- Here is where the active electrohydraulic auxiliary
steering comes into play. Auxiliary axles are steered via the main steering
system in accordance with a vehicle-specific steering strategy.
No mechanical connections are required between the steering axes. Thanks to the integrated safety function, which monitors all of the operating statuses of the steering, system errors are detected and the corresponding safety reactions are initiated. The errors detected can be read out to the service via a diagnostics interface.
Customer-specific central hydraulics
- Central hydraulics for every application In the central hydraulics, various hydraulic functions for the customer's application are combined in one housing. Customised central hydraulic blocks are usually cast from mould cast with cores. We deliver them fully fitted and tested. The central hydraulic system replaces multiple valve housings with many screw fittings, pipes and hoses. Sources of error are reduced and leaks are avoided. Optimised channel management and the resulting low pressure drops can improve the energy efficiency of the entire system. In sum, the central hydraulic system represents the most economical solution for each application.
Mobile Valves
Sectional Directional Control Valves
- Directional control valves available with 1 to 10 sections and 3/8", 3/4" or 1/2" ports, with rated nominal flow from 10 up to 180 l/min and max. operating pressure of 350 bar. Available with manually, cable, pneumatic, hydraulically and electro hydraulically spool controls. Spool position indicators are optional available in our Mobile Valves program.
Monoblock Directional Control Valves
- Directional control monoblock valves with 1 to 4 and 6 sections in 1/2" and 1". Recommended for applications with rated flows up to 160 l/min and operating pressures up to 300 bar. Spools optimized for different applications. Available with manually, cable, pneumatic, electro-pneumatic and optional electro hydraulic spool controls.
Front loader valves
- Two-way and three-way functions for flow rates from 20 to 160 l/min at max. 350 bar, depending on the application. With many spool and control options, also possible in combination with suspension modules.
Load-Sensing Valves
- Load-Sensing directional control valves available with 1 to 10 sections and with rated nominal flow from 10 up to 200 l/min and max. operating pressure of 420 bar. Available with manually, hydraulically, electro hydraulically and electronic control unit. Spool position indicators are optional available in our Mobile Valves program.
Cylinders
Differential cylinder
- A differential cylinder has a piston rod on only one side of the piston surface. It has, as a result, two different large effective surfaces: One the one hand the surface on the piston side, which is completely effective, and on the other the rod-side surface, for which only the ring surface is effective. The ratio of the piston surface to the ring surface is referred to as Φ. As a result, under normal circumstances the differential cylinder moves in and out at two different velocities. If the cylinder is operated in the closed control loop, then it will travel in accordance with the velocity specified by the setpoint.
Synchronous cylinder
- A synchronous cylinder (also referred to as a velocity cylinder or a double rod cylinder) has a piston rod on both sides of the piston surface. The volume of the hydraulic oil flowing in and out is therefore always of equal size, which thus means that it also moves in and out at the same velocity. Synchronous cylinders can also be implemented with only one piston rod. In such cases, a special shape of piston rod with internal bore holes ensures that the surface dimensions are equal.
Plunger cylinder
- A plunger cylinder has no actual plunger, the piston rod acts as a plunger. Plunger cylinders have a more favourable degree of mechanical efficiency, but they must be axially guided.
Telescopic cylinder
- A telescopic cylinder is comprised of several cylinders built inside one another. It is is often constructed in a single-acting form, but is also to be encountered in a double-acting version. A combination of single-acting stages with a double-acting stage is also possible. The advantage of telescopic cylinders is that they can generate large strokes with relatively small installation lengths.
