The essential components of series AP external gear pumps are an aluminium alloy body and two gearwheels supported by plain bearings.  The front flange can be the SAE standard, or the British or German OEM patterns. The various frame sizes can be combined with each other, enabling double and triple pumps to be assembled.
Advantages
- High overall efficiency thanks to optimised hydraulic compensation
- Design and materials that guarantee excellent technical specifications and long life service
- Optimum quality/price ratio
- Customised models can be built for specific applications
- Various components and accessories are available for radial/axial loads, pressure/flow control, etc.

The QX pumps are the 5th generation of Bucher internal gear pumps, which have proven themselves in thirty years of service around the world. The straightforward and rugged construction guarantees long service life without the need for extensive maintenance. Tandem and multiple pumps are available worldwide in more than 1000 variants.
Advantages
- High pressures
- Low noise level
- Long service life
- Negligible flow and pressure
- Insensitive to contamination
 

The QVX is an internal gear pump for low viscosity. It can develope pressures of 300 bar with high efficiency at viscosities of around 1 mm²/s. The QXV is beeing used with great success to pump aviation jet fuels, paraffin oil/kerosene, brake fluids, Pentosin and HFA fluids.
Advantages
- Very low noise levels
- 300 bar can be developed
- Outstanding efficiencies
- Long service life
- Low pump wear
- Low susceptibility to cavitation
- Good emergency running

 

The QXP is an internal gear pump for metering isocyanates, polyols, additives and other fluids. Combined with a variable-speed drive, the QXP is being applied very successfully as a metering pump in the production of polyurethane.
Advantages
-precision metering with very low pulsations, even at high pressures.
- can be used with high and low viscosities, and with variable-speed drives.

The QXM drive unit can be used in open- and closed-loop hydrostatic drives, and can operate both as a pump and as a motor.  The QXM works as a pump to lift the load and it can recover energy when the load is being lowered. Used as a bi-directional pump / motor (four-quadrant operation), the unit can control the complete motion cycle of a cylinder.
Advantages
- Very low noise levels
- Negligible pressure pulsations
- Long service life
- Suitable for special fluids
- 4-quadrant (fully bi-directional pump / motor) or
- 2-quadrant operation is possible
- Low susceptibility to cavitation

The essential components of series APM external gear motors are an aluminium alloy body and two gearwheels supported by plain bearings. The front flange can be the SAE standard, or the British or German OEM patterns. Particular attention has been focussed on the design of the shaft seal, which is often affected by back-pressures.
Advantages
- High overall efficiency thanks to optimised hydraulic compensation
- Optimum quality/price ratio
- Customised models can be built for specific applications
- Low maintenance requirements, even in heavy-duty operating conditions
- Various components and accessories are available for radial/axial loads, integral anti-cavitation valve, etc.

Gerotor motors are slow speed / high torque motors.
The power element of this motor is the power unit, comprising rotor, outer ring (stator) and 7 cylinders. The patented rotor profile prevents direct leakage between the pressure chambers, resulting in negligible internal leakage and high volumetric efficiency.
Advantages
- Without drain line
- Integrated speed sensor
- Integrated valves
- Parking brake or wheel hub

The QXM drive unit can be used in open- and closed-loop hydrostatic drives, and can operate both as a pump and as a motor. The QXM works as a pump to lift the load and it can recover energy when the load is being lowered.  Used as a bi-directional pump / motor (four-quadrant operation), the unit can control the complete motion cycle of a cylinder.
Advantages
- Very low noise levels
- Negligible pressure pulsations
- Long service life
- Suitable for special fluids
- 4-quadrant (fully bi-directional pump / motor) or
- 2-quadrant operation is possible
- Low susceptibility to cavitation

The QXM-HS (High Speed) internal-gear motor was developed specifically for use at extremely high speeds. Its first-rate efficiency and extremely low noise levels also make a significant contribution to reducing the costs of both energy and anti-noise measures. Thanks to the special motor flange, adapted for such applications, and the integral ports for auxiliary functions, the motor can be used in many applications without needing any further modification.
Advantages
- Particularly suitable for high speeds
- Very low hydraulic and mechanical losses
- Can carry high external radial loads
- Low noise levels
- Cost-savings in system design, assembly and maintenance

Series QXT internal flow dividers divide a flow into as many as four portions. The division ratios are constant and are unaffected by the loads at the actuators. They can be used, for example, to provide synchronised movement of unequally loaded cylinders. Several hydraulic motors can be driven at the same speed, irrespective of their external loads.
Advantages
- High division accuracy
- A very wide range of division ratios is available
- The inlet flow can be divided into as many as four portions
- High efficiency
- Long service life
- Also suitable for special fluids

These units feature a high degree of accuracy and have a wide application range. Bucher Hydraulics power packs are designed according an integrated modular system of valves for the various functions. This highlights the equipment’s compact nature, the foundation of its high performance level. The basic components of the power packs are:
- a manifold block with cavities for various types of valves
- a very quiet, high-efficiency gear pump
- an electric motor (DC or AC)
- a reservoir (plastic or steel)
- several optional accessories
Advantages
- Compact and modular construction, limited number of components, quick and easy assembly
- Maximum flexibility – numerous different circuits can be built from just the few basic versions
- Valve cavities conform to international standards
- Optimisation of motor-pump unit produce increased efficiency and low operating noise level

DC Power Units
DC power units have a lot of features and include:
- Compact designs
- Integrated and manifolded valve circuits
AC Power Units
We manufacture AC hydraulic power units for commercial and industrial applications. We offer a wide range of motors, reservoirs, manifolds and valve options.
Technical Data (DC and AC Power Units)
- Displacements: 0.40-8.0 GP
- Pressures to 4000 psi
Typical Applications
- Aerial Platforms
- Car Hoists
- Compactors
- Dock Levelers
- Exercise Equipment
- Factory Automation
- Parking Systems
- Scissors Lifts
- Security Gates

We design and manufacture series MT & T AC hydraulic power units for industrial and commercial applications. These power units can be configured to create common circuits or systems that incorporate specialized and custom manifold designs.
System Capabilities
- Flow rates from 0.25 gpm to 15 gpm, pressures to 4000 psi
- Electric motors from 0.5 Hp to 20 Hp in several voltages and frequencies
- Pressure balanced, pressure compensated, and fixed clearance pump options
- Single acting, double acting, and multi-station circuit options
- D03 & D05 directional valves and stack mount control modules
- Conduit box, DIN style, and other coil options
- Air / oil and water / oil type heat exchangers
- Return line and pressure filter options
**Higher flow rates, alternate pump types, and special manifolds available upon request.
Applications
- Industrial Presses and Processes
- Rollforming Equipment
- Material Lifts
- Factory Automation
- Scissor Lifts & Platforms
- Material Handling Equipment
- Hydraulic Door Systems
- Positioning Equipment

The essential components of series ET electro pumps are an external gear pump and a D.C. motor. The 12 and 24 VDC motors feature high efficiencies and precision-balanced rotors for low-vibration running. They are combined with our AP05 - AP100 external gear-pumps to produce the ET series of electro-pumps, a family of products that are notable for their low noise levels in operation. Simplicity of construction and reduction in size are the fundamental objectives in the design of the ET electro-pumps.
Features:
- Hydraulic connections by pipe flanges or threaded ports
- Available with all external gear pumps in AP05 and AP100 ranges
Advantages:
- Compact unit
- Powerful
- Low noise emission
- Wide range of displacements and electric motor powers

Features:
- Monobloc construction
- For series or parallel operation
- Open centre, closed centre and carry-over circuits
- Option for integrated anti-shock, anti-cavitation, pressure relief, flow control and check valves
- Single lever actuation for 2 valves and remote cable controls
Advantages:
- Fatigue-free operation
- Minimal maintenance
- Compact overall dimensions
- Fine metering spools

Features:
- Monobloc construction
- Internal load feedback
- 2- or 3-way pressure compensation
- Individual adjustment of flow rates
- All valve functions are integrated in a single compact block
- Up to four proportional directional valve functions
- Primary pressure relief can be included
Advantages:
- Sensitivity and precision of load control
- Load-independent flow adjustment
- Specially developed for use in mobile hydraulics
- Perfectly matched to the application

Features:
- Compact manifold mounting
design
- Internal load feedback
- 2- or 3-way pressure compensation
- Individual adjustment of flow rates
- Primary pressure relief can be included
- All valve functions are integrated in a single compact block
Advantages:
- Load-independent flow adjustment
- Sensitivity and precision of load control
- Perfect match to the application
- Easy maintenance due to quick-change of individual components means minimum service interruption

Features:
- Mounting pattern:
ISO 4401-02-01 NG4
ISO 4401-03-02 NG6
ISO 4401-05-04 NG10
CETOP R35H 03, 05
DIN 24340 A6
DIN 24340 A10
NFPA D03, D05
- Direct acting seat valve
- Direct acting and two-stage spool valves
Advantages:
- Available in explosion-protected versions
- Unaffected by asymmetric flow, high viscosities or high pressure differentials
 

Features:
- Sectional construction
- For series or parallel operation
- Open centre, closed centre and carry-over circuits
- Option for integrated anti-shock, anti-cavitation, pressure relief, flow control and check valves
- Single lever actuation for 2 valves and remote cable controls
Advantages:
- Differing types of actuation may be combined
- Minimal maintenance
- Further information: HDS 200-P-991210
- Customer specific control blocks for maximum flexibility
- Fine metering spools

Features:
- Sectional design
- Flexible system, specially developed for use in mobile hydraulics
- Additional functions can be incorporated in the modular system: Two- and three-way pressure
compensation, priority pressure compensation, individual pressure compensation, check valves, load control valves, relief valves, anti-cavitation valves, flow cut-off, flow limiters, manual override
Advantages:
- Load-sensing capability
- Suitable with all pump types and in systems with variable feeds
- Load-independent flow adjustment even in parallel operation with multiple consumers
- Complete solution with high functionality

Features:
- Sectional design
- Proportional flow-control functions, downstream pressure compensation, relief valve, make-up function, seat valve, manual override, two- and three-way pressure compensation, internal and external priority functions
- Flow control operation in one valve
- Available with specific operations for agricultural machinery, forestry equipment, construction machines, loading cranes and many other applications
Advantages:
- Increased handling capacity
- Lasting cost savings and increased machine performance data
- Fatigue-free operation
- Can be configured for both fixed and variable displacement pumps

Features:
- Compact sectional design
- Load feed-back
- Flexible building-block system
- Individual adjustment of flow rates
- Individual pressure compensation
- Individual flow cut-off for each consumer
Advantages:
- Suitable with all pump types and in systems with variable feeds
- Sensitivity and precision of load control
- Load-independent flow adjustment even in parallel operation with multiple consumers
- Flexible modular system, specially developed for use in mobile hydraulics

Features:
- Compact sectional design
- Load Sensing
- Flexible building-block system
- Individual adjustment of flow rates
- Individual pressure compensation
- Individual flow cut-off for each consumer
Advantages:
- Suitable with all pump types and in systems with variable feeds
- Sensitivity and precision of load control
- Load-independent flow adjustment even in parallel operation with multiple consumers
- Flexible modular system, specially developed for use in mobile hydraulics

Features:
- Available either with UNF or metric threads
- Seat valves
- Spool valves
- Also available with an emergency override
Advantages:
- Small installation size
- Rotatable solenoid
- Solenoid can be replaced without contact with fluids

Features:
- Directly and pilot controlled
- Pressure relief valves
- Pressure reducing valves
- Pressure compensator valves
- For bypass and inline applications
- Logic valves
Advantages:
- Small installation size
- Excellent characteristics

Features:
- Directly and pilot controlled
- Pressure relief valves
- Pressure reducing valves
- Pressure compensator valves
- External pilot connection
- 2 pressure settings
- Proportional or on/off solenoids
Advantages:
- Small installation size
- One valve – continuously variable pressures
- 2 pressure settings

Features:
- Directly and pilot controlled
- Seat and spool models available
- Throttle function
- Flow-control function
- Flow-control valve with adjustable
- Proportional or manual
Advantages:
Space-saving
High quality
Low pressure loss

Features:
- Screw-in or plug-in fitting
- With the RKVC and RVC ranges the checked direction is changed by inverting the cartridge
- Ball and plate valves
- Simple throttle/check functions can be achieved in plate valves by means of orifices in the plate
- Also available with hydraulic pilot operation
Advantages:
Small installation size
High sealing properties
High dynamics

Features:
- Model provided with thread
- Ball version
- Can be used as a counterbalance valve
- Pipe-work installation version available
on request
Advantages:
- Small installation size
- High level of leak tightness
- Flat characteristic curve

Features:
- Direct or pilot operated
- Normally open or normally closed
- Bypass check valve
Advantages:
- Operating units designed for specific applications
- Standardised components
- Simple installation and dismounting

Features:
- Units with pressure relief, pressure reducing and sequence functions
- Manually adjustable, on/off solenoid, Hi/Lo,
proportional solenoid
Advantages:
- A huge selection of standardised components
- Adjustable and lockable in use

Features:
- Check Valve
- Check valve also available with hydraulic pilot operation
- Direct or pilot operated
Advantages:
- Compact design
- Standardised components
- Leak proof

Features:
- Simple throttle function
- With bypass check valve
- Two-way flow controller
Advantages:
- Economical components and installation
- Standardised components
- All settings can be locked

Features:
- Fit between port and flange
- Checked direction can be changed by inverting the valve
- Optionally available: Throttle function in checked direction
Advantages:
- Compact design
- Great sealing properties
- High dynamics
- Same valve body for 3000 psi and 6000 psi mounting pattern

Features:
- FBVGA Double Travel Brake Valves
- ERV and DERV Check Valves
Advantages:
- Valves comply with relevant safety regulations
- Designed specifically for particular applications
- Greatest possible safety

Features:
- SAE flange, block and cartridge designs
- Block-mounted valve with integral secondary pressure relief valve
- Pilot operated
- Available with load pressure over-compensation
Advantages:
- Valve locks even if the spring breaks
- Load-control, check and pipe rupture valve functions all incorporated in a single valve axis
- Great durability due to leak-free, hardened and lapped valve seat parts
- Greatest possible protection against unintentional movement

Features:
- Cartridge design
- SAE housing and block designs
- Body with threaded connector
- Pilot operate load control valve and bypass check valve in a single axis
Advantages:
- Absolutely leakage-free load control
- Lowering operations practically independent of the load pressure
- Guaranteed to lock even if the spring fails
- Specific load control

Features:
- For pipework installation
- ¾”, 1” and 1 ¼” SAE
- With integrated secondary pressure limiter
Advantages:
- Leak-free load control
- Optimum Δp values during lifting and lowering operations
- Suitable for retro-fitting
- No adjustment to the directional valve necessary

Features:
- Fulfil the requirements of ISO 8643 and EN 474-5 standards for earth-moving machinery
- Direct attachment via SAE 6000 psi flange
- Compact design, with either pilot or direct control
- Pressure limiting valve independent of the return pressure
- Secondary pressure limiting with no additional tank line
Advantages:
- Insignificant lowering pressures
- Greatest possible protection against unintentional movement
- Adjustable flow for lock activation
- No need to change any of the hydraulic adjustments already made to the equipment
- Leak-free load control

Features:
- Cartridge design
- Screw in cartridges for pipe connection
- Ball valve or plate valve
Advantages:
- Very little space required
- Flow rate easily adjusted
- Adjustable flow for lock activation
- Greatest possible protection against unintentional movement

Features:
- Examples of applications:
     - In gaseous atmospheres, II 2 G
     - In dust atmospheres, II 2 D
- Solenoids:
     - EEx em T4 enhanced safety / metal
                 casting encapsulation
     - EEx d II C T4…T6 pressure resistant
                 encapsulation
- W- type solenoid valves in block, cartridge or pipework design
- Directly and pilot controlled
Advantages:
- Compliant with ATEX safety requirements
- EC Type Approval Certification
- Rugged construction

Features:
- Explosion protected controls
(e.g. for off-shore applications)
- Intrinsically safe controls for
mining operations
- Several ranges available
(CV, LV, MV, SV)
- Models available which are
compliant with explosion
protection categories:
CE EX I M2 EEx ia I
CE EX II G EEx d IIC
CE EX II 2 G EEx m II
Advantages:
- Electrically proportional or on/off controls in areas requiring a high level of protection
- Advantage over competitors’ products: Use of precise electrical proportional controls in areas where it has previously only been possible to install manually or hydraulically operated valves

Features:
- Monobloc design with add-on
sections
- Sectional construction allows
for customised valve blocks
- Emergency override
- Integrated pressure limiter is
optionally available
- Can be combined with other
directional valve ranges
Advantages:
- Leak-free sealing of feed and return pipes on hydraulic equipment
- Economic alternative to conventional designs
- Minimal dimensions

- Monobloc design
- Lightweight aluminium construction
- 3/2 directional spool valve followed by a 2/2 directional seat valve
- Integrated manual override
- Pressure limiters and flow valves also available as options
Advantages:
- Leak-free sealing
- Extremely space-saving
- Lightweight

Features:
For installation in pipework
- Various division ratios
Options:
- Final position adjustment
- Anti-cavitation valve
- Check valve
- Pressure relief valve
Advantages:
- Precise flow rate division and merging
- No maintenance required
- Also available as a high-pressure flow divider
up to 420 bar (6000 psi)

Features:
- For installation in pipework
- Manually adjusted
- Surplus flow can be pressurised (MTKA, MTCA)
- Total flow protected by pressure relief valve (MTQA and MTCA)
Advantages:
- Control flow rates economically
- No maintenance required
- Just one turn of the adjuster for the entire control range

Features:
- Configurations:
    - Cartridge design
    - Pipe-work installation type
    - Motor/pump assembly
    - Valve manifold solutions with integrated additional operations
- 2 and 3 way modes
- Residual flow is resistant to compressive stress
Advantages:
- Constant performance under varying temperature and load conditions
- No maintenance necessary
- Sturdy, simple, safe in operation
- Easy coil change, without disturbing fluid area
- Distinctive fine-adjustment range

Features:
- Valve manifold solutions optimized to suit installation positions
- Optionally available with threaded connections or SAE flange attachments
- Balancing orifices for best possible performance
- Two-way and three-way lock
- Pressure relief, shock and anti-cavitation valves available as options
Advantages:
- Robust and reliable
- No maintenance required
- Precise performance with no need for elaborate electronics

Features:
- Suitable for finely-tuned control of driving and operating functions
- Internal sensors with non-contact
position sensing
- Further special models available
on request
- Various handgrip configurations,
also with hand rests
Advantages:
- Compact design with minimal installation dimensions
- Simple, fatigue-proof operation
- Great reliability
 

Features:
Bucher Hydraulics offer a wide range of operating
controls with displays, pushbuttons and
switches in a multitude of designs.
- Either as stand-alone units or for installation in control panels
- Analogue or digital controls
- Also available microprocessor controlled with diagnostic capability, PC interface and GPS connection

Features:
For controlling on-off and
proportional solenoids
- With ramp function
- Command variables also as frequencies
- Programmable functions
- Analogue, digital signals
- Implementation of control circuits
Advantages:
- Performance data tailor made for your particular application
- Perfectly tuned to hydraulics
- Suitable for many different system configurations

Features:
- Valve manifolds available made of steel or aluminum
- Customized systems and components
- High degree of performance reliability and stability
- Customer oriented system solutions
- Optional with anti-corrosion treatment
Advantages:
- Maximum performance in a minimum of space
- Reduced pipe-work and assembly costs
- 100% performance tested
- High power density

Features:
- Consist of pump/motor based on either external or internal gear principle, valve technology and control electronics
- Construction kit principle with options such as:
    - Outrigger bearing for axial and radial power absorption
    - With anti-cavitation and pressure relief properties
    - Reversible
    - With proportional or thermostatic valve technology
Advantages:
- Cooling circuit rapidly brought up to operating temperature
- Recognition and control of up to 3 actual values
- Failsafe function
- Reversible