Danfoss Vickers PVM hydraulic piston pump

2 month ago

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

4 year

Product details

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The PVM series is a high-pressure swashplate axial piston variable displacement pump developed by Danfoss after acquiring Eaton Vickers. Designed for heavy-duty industrial and mobile hydraulic applications, it is a mature and durable medium-to-high pressure piston pump renowned for low noise, high efficiency, strong contamination resistance and long service life. It is widely used as a replacement for the older Vickers PVB series.

Model Nomenclature (Example: PVM074ER09GS02AA)

- PVM: Series code for Variable Displacement Axial Piston Pump

- 074: Nominal displacement in cm³/r. Main specifications include PVM045 / 050 / 063 / 074 / 098 / 131

- E: Control type (pressure compensation, load sensing, electro-proportional, etc.)

- R: Rotation direction (clockwise / counterclockwise)

- 09: SAE standard 2-bolt mounting flange specification

- GS: Port configuration layout

- 02AA: Seal material, shaft oil seal and shaft extension configuration

Operating Principle

1. It adopts a swashplate piston structure. The drive shaft rotates the cylinder block, and the pistons reciprocate according to the swashplate angle to complete oil suction and discharge cycles.

2. The swashplate angle is actuated by an integrated servo control valve, which automatically adjusts displacement based on load pressure signals to achieve constant power, constant pressure and load-sensing (LS) control.

3. Pressure compensation (PC) is the most common configuration: once system pressure reaches the preset value, the pump automatically reduces displacement to stabilize pressure, minimize overflow heat generation and save energy.

Main Control Configurations

1. PC Pressure Compensation Control

The most widely used type, which sets the maximum system operating pressure and reduces displacement automatically at set pressure. Commonly applied in injection molding machines and hydraulic power units.

2. LS Load Sensing Control

Adjusts flow in real time according to load demand, running at low displacement under no-load conditions to reduce power consumption. Suitable for construction machinery and mobile hydraulics.

3. EP Electro-Proportional Displacement Control

Receives 0~10V or 4~20mA electrical signals for stepless flow regulation, ideal for automated production lines and closed-loop systems.

4. HC Constant Power Control

Maintains constant engine output power to prevent overload stalling, used in loaders, pavers and other mobile equipment.

General Key Technical Specifications

- Displacement range: 45 ~ 131 cm³/r

- Rated operating pressure: 280 bar

- Peak pressure: 315 bar

- Operating speed range: 600 ~ 2800 rpm

- Volumetric efficiency: ≥94%

- Case drain pressure rating: 10 bar

- Mounting standard: SAE J744 2-bolt flange; through-drive design optional

- Seals: Standard NBR nitrile rubber; FKM high-temperature resistant seals available as an option

Structural Features

1. Spherical valve plate design reduces friction loss and provides excellent contamination tolerance, performing better than comparable Rexroth pumps regarding oil cleanliness requirements.

2. Bimetallic cylinder block and copper alloy valve plate ensure low wear under high pressure and high speed for extended service life.

3. Integrated control valve design offers compact installation with externally adjustable pressure and flow settings.

4. Optimized low-noise structure delivers stable operation, suitable for indoor industrial equipment.

5. Through-drive configuration allows series mounting with gear pumps and piston pumps for multi-pump combinations.

Typical Applications

- Industrial hydraulic power units, injection molding machines, forging equipment and metallurgical machinery

- Construction machinery: loaders, road rollers, aerial work platforms and concrete machinery

- Marine deck hydraulics, mining equipment and port lifting machinery

- Mobile hydraulic power packs

Common Wear Parts

- Valve plate, cylinder block and piston slipper assembly

- Servo spool and pressure compensation valve components

- Shaft oil seal and end cap seal kits

TheDanfoss Vickers PVM seriesrepresents a line of high-performance axial piston pumps designed for hydraulic systems requiring precise control, high efficiency, and durability. These pumps are widely used in industrial machinery, mobile equipment, and specialized hydraulic applications.

Key Features of the Danfoss Vickers PVM Pump

1. Axial Piston Design

• Utilizes a swashplate mechanism to convert rotational motion into hydraulic flow, enabling variable displacement control.

2. Variable Displacement

• Adjustable output flow rate to match system demands, improving energy efficiency and reducing heat generation.

3. High-Pressure Capability

• Rated for operating pressures up to350 bar (5,076 psi), suitable for demanding hydraulic applications.

4. Compact & Robust Construction

• Durable materials and precision engineering ensure long service life even in harsh environments.

5. Low Noise & Vibration

• Optimized internal geometry minimizes operational noise and vibration levels.