Replacement Variable Axial Piston Pump for Parker PVP33 Series

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Product details

Replacement Variable Axial Piston Pump for Parker PVP33 Series

1. Product Overview

This replacement variable axial piston pump is designed as a direct interchange spare part for Parker PVP33 series hydraulic pumps. It adopts swashplate variable displacement structure. The installation dimensions, shaft specifications, oil port layout and control interface are fully consistent with the original Parker PVP33 pump.

It is widely used in industrial stationary hydraulic systems and mobile machinery. As an economical aftermarket alternative to original imported Parker pumps, it is ideal for equipment maintenance and upgrading projects.

Model Code Explanation

- PVP: Parker medium-pressure axial piston pump series

- 33: Nominal displacement specification code of this pump series

2. Main Technical Parameters

Item Specification

Pump Type Swashplate variable displacement axial piston pump

Nominal Displacement Multiple displacement options matching PVP33 series

Rated Working Pressure 21 MPa

Maximum Peak Pressure 28 MPa

Allowable Rotation Speed 1800 rpm (max)

Control Forms Pressure compensator, pressure & flow compensator (same as original)

Shaft Structure Interchangeable spline shaft / key shaft as original PVP33

Oil Port Standard Thread size and position identical to original pump

Applicable Fluid ISO VG46, VG68 anti-wear hydraulic oil

Operating Temperature -20℃ ~ +85℃

Standard Seals NBR; FKM high-temperature seals optional

3. Working Principle

The driving motor or engine drives the cylinder block and piston assembly to rotate. The reciprocating motion of pistons completes oil suction and pressure output.

The built-in pressure compensator automatically adjusts the swashplate tilt angle according to system pressure changes, changing pump displacement to stabilize system pressure and realize automatic flow adjustment, effectively reducing energy consumption and heat generation of the hydraulic system.

4. Core Advantages

1. Full interchangeability with Parker PVP33 series. No modification of pipelines, mounting base and control circuit during replacement.

2. Precision-machined internal friction pairs, low internal leakage and stable volumetric efficiency under long-term continuous operation.

3. Multiple control modes available, completely compatible with original pump control logic.

4. Stable medium-pressure performance, suitable for continuous operation of industrial hydraulic stations.

5. Shorter delivery cycle and competitive price compared with original Parker spare parts.

6. Compact structure, easy disassembly and field maintenance.

5. Application Range

This interchange axial piston pump serves as the core power component of hydraulic systems. It is widely equipped on hydraulic power units, injection molding auxiliary equipment, metallurgical machinery, rubber machinery, packaging machinery and other industrial equipment originally fitted with Parker PVP33 series pumps.

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