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Description
- Robust high pressure pump with integrated boost pump
- Size 250 … 750
- Nominal pressure 350 bar
- Maximum pressure 400 bar
- Closed circuit
Features
- Integrated boost pump for boost and pilot oil supply
- Integrated pressure relief valves for boost-, control- and high-pressure
- Robust pump with very long service life
- Integrated flushing valve
- Through drive for mounting of further pumps up to same nominal size
- Flow direction changes when the swashplate is moved through the neutral position
- Axial and radial load capacity of drive shaft
- Low operating noise
- Visual swivel angle indicator
- Controls with short response times
- High total efficiency
- Swashplate design
Technical data
Table of values
| Size | 250 | 355 | 500 | 750 | |||
| Displacement | Vg max | cm³ | 250 | 355 | 500 | 750 | |
| Nominal pressure | pnom | bar | 350 | 350 | 350 | 350 | |
| Maximum pressure | pmax | bar | 400 | 400 | 400 | 400 | |
| Maximum speed | at Vg max | nnom | rpm | 2200 | 2000 | 1800 | 1600 |
| Flow | at Vg max and nnom | qV nom | l/min | 550 | 710 | 900 | 1200 |
| Power | at qV nom and Δpnom 1) | P | kW | 321 | 414 | 525 | 700 |
| Torque | at Vg max and Δpnom | M | Nm | 1391 | 1976 | 2783 | 4174 |
| Weight (approx.) | m | kg | 214 | 237 | 350 | 500 | |
| 1) | Δpnom = 350 bar |
Controllers/adjustment devices
Pilot-pressure related proportional control
HD

Pilot-pressure related proportional control
HD
- Available for A4VSO, A4VSG and A4CSG
- Control is pilot-pressure related
- Different pilot-pressure ranges available
- Power control, pressure control and electrical pilot pressure supply optional
- Standard spring-centering of the stroking cylinder
Electrohydraulic control with proportional solenoid
EP

Electrohydraulic control with proportional solenoid
EP
- Available for A4VSG and A4CSG
- Electro-proportional control by a current signal
- High control accuracy
- Resets to neutral position in the event of a signal failure
- With manual override
Electrohydraulic control systems
HSx, HMx, EOx

Electrohydraulic control systems
HSx, HMx, EOx
- Available for A4VSO, A4VBO, A4VSG and A4CSG
- Electrohydraulic control with proportional and control valve
- Digital electrohydraulic control systems with amplifier
- Control of swivel angle, pressure and power (HS5P)
- Usable as a special version in mooring operation (overcenter)
Pilot-pressure related proportional control
HD

Pilot-pressure related proportional control
HD
- Available for A4VSO, A4VSG and A4CSG
- Control is pilot-pressure related
- Different pilot-pressure ranges available
- Power control, pressure control and electrical pilot pressure supply optional
- Standard spring-centering of the stroking cylinder
Electrohydraulic control with proportional solenoid
EP

Electrohydraulic control with proportional solenoid
EP
- Available for A4VSG and A4CSG
- Electro-proportional control by a current signal
- High control accuracy
- Resets to neutral position in the event of a signal failure
- With manual override
Electrohydraulic control systems
HSx, HMx, EOx

Electrohydraulic control systems
HSx, HMx, EOx
- Available for A4VSO, A4VBO, A4VSG and A4CSG
- Electrohydraulic control with proportional and control valve
- Digital electrohydraulic control systems with amplifier
- Control of swivel angle, pressure and power (HS5P)
- Usable as a special version in mooring operation (overcenter)
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