Product Overview
The PVQ40AR01AB10G2100 is the 41 cc displacement variant of the Vickers by Danfoss (formerly Eaton Vickers) PVQ Series open-circuit axial piston variable pump. The PVQ series is positioned as a “silent direct-drive” industrial pump, built on a swashplate variable displacement architecture with a valve plate specifically timed for noise reduction. With a nominal displacement of 41 cm³/r (2.50 in³/r), a rated operating pressure of 210 bar, and a maximum speed of 1800 rpm, this pump is configured with a pressure compensator control and is suited to injection molding machines, machine tools, metal forming equipment, and general industrial hydraulic systems.
As an interchangeability-focused replacement, this unit is assembled to OEM tolerance specifications and subjected to 100% simulated-load bench testing. Mounting flange, shaft interface, and port locations match the original Vickers pump, ensuring true drop-in installation.
Technical Specifications
Model: PVQ40AR01AB10G2100
Series: PVQ Series (silent direct-drive open-circuit variable piston pump)
Displacement: 41 cm³/r (2.50 in³/r)
Design: Swashplate axial piston variable pump, open circuit
Rated Continuous Pressure: 210 bar (3000 psi)
Intermittent Peak Pressure: 230–250 bar
Maximum Speed: 1800 rpm
Control Type: G — Pressure compensator, factory preset at 210 bar
Rotation: R — Right-hand (clockwise, viewed from shaft end)
Mounting Flange: SAE B two-bolt flange
Input Shaft: SAE B straight keyed shaft, φ22.2 mm
Seal Material: NBR (Nitrile Butadiene Rubber)
Housing Material: Cast iron
Weight: Approx. 20.6 kg
Noise Level: 71 dB(A) at full stroke, 1800 rpm
Bearing Life: 8000 hours at rated pressure
Fluid Cleanliness: ISO 18/13
Data note: Displacement, pressure, speed, and noise figures are based on Eaton Vickers PVQ Series published technical data and the Danfoss PowerSource product database. The control code “G” corresponds to the pressure compensator type in the PVQ model code structure, with a factory preset compensation pressure of 210 bar. The “AR01AB10” segment defines mounting flange, shaft, and port configuration; “2100” specifies the pressure compensator setting; “0002” is the maximum displacement limiter configuration. Final configuration should be verified against the unit nameplate prior to order.
Key Technical Advantages
1. Silent direct-drive design with excellent industrial noise control. The PVQ series is defined by its “silent direct-drive” positioning. The valve plate is specifically timed to minimize pressure and flow ripple, achieving a noise level of only 71 dB(A) at full stroke and 1800 rpm — suitable for injection molding and machine tool environments where workplace noise is regulated. Direct engine or motor coupling eliminates gear reduction, further reducing system noise.
2. Proven rotating group with 8000-hour bearing life. The PVQ40 inherits the Vickers PVB/PVE rotating group architecture, validated across decades of industrial service. Bearings are rated for 8000 hours at rated pressure. Precision-lapped piston pairs and valve plate maintain stable volumetric efficiency under continuous industrial duty, reducing unplanned downtime.
3. Cast iron housing with SAE B standard interface. The integral cast-iron housing provides rigidity and heat dissipation. The SAE B two-bolt flange and φ22.2 mm keyed shaft are standard industrial interfaces, enabling direct replacement of original Vickers pumps and compatibility with SAE B flange-mounted equipment without modification.
4. Pressure compensator control for load-adaptive energy savings. The G-type pressure compensator automatically reduces swashplate angle when system pressure reaches the 210 bar setpoint, reducing output flow to only what is required to maintain system leakage. In injection molding hold-pressure and machine tool clamping applications, this significantly reduces power consumption and heat generation during high-pressure, low-flow phases.
Application Areas
Injection molding machines — clamp, injection, and hold-pressure circuit power source; pressure compensator suits the energy-saving requirements of the hold phase.
Metal forming equipment — hydraulic presses, press brakes, and shears with open-circuit variable pump systems.
Machine tool hydraulic systems — power units for machining centers and grinding machines.
Die casting machines — open-circuit hydraulic power source.
Conveyor lines and material handling — hydraulic drives for industrial conveying systems.
Oil and gas equipment — hydraulic power units for wellhead and manifold systems.
Expert Maintenance Tips
Pre-installation: Confirm shaft rotation direction (R = right-hand, clockwise) matches the prime mover. Tighten SAE B two-bolt flange bolts in a diagonal cross pattern to specified torque. The suction line must be sized for self-priming at 1800 rpm full displacement, with inlet absolute pressure not less than 1 bar. Fluid cleanliness must meet ISO 18/13 or better; circulate-flush the circuit before first operation.
First start-up: Pre-fill the pump housing with clean hydraulic fluid. Run at 500–800 rpm for 2–3 minutes to purge air, observing steady flow from the case drain port. Only ramp to 1800 rpm after confirming normal noise and vibration levels.
Pressure compensator adjustment: The G-type compensator is factory-preset at 210 bar. If adjustment is required, use a pressure gauge of accuracy class 1.6 or better. Rotate the adjustment screw clockwise to increase the setpoint and counterclockwise to decrease. Do not exceed the 210 bar rated limit — over-setting will cause pump overload and accelerated seal degradation. Perform a system pressure-holding test after each adjustment to confirm stable operation.
Routine service: Periodically verify the case drain line is unobstructed; case drain back pressure must not exceed 0.35 bar. Maintain hydraulic fluid temperature between 30°C and 70°C. Replace hydraulic fluid and suction filter every 2,000 hours or annually. For storage exceeding three months, fill the pump housing with preservative hydraulic fluid and cap all ports.
