Parker Hannifin PAVC38 axial piston variable hydraulic pump
- Product Details
- Product Model
- FAQ
The PAVC38 operates on the well-established axial piston principle, but it is the variable displacement mechanism that sets it apart. At its heart is a swash plate—a tilting disc that determines the pistons' stroke length. By altering this angle, the pump adjusts its output flow to meet system demands in real-time, eliminating the energy waste inherent in fixed-displacement systems. This is not merely a binary "on/off" but a responsive, modulating process that optimizes power usage and reduces heat generation.
Design and Architecture
Built for Durability
The pump's construction reflects a commitment to longevity. The housing is high-strength cast iron, providing a robust foundation that withstands shock loads and harsh environmental conditions. Integral to its design is a built-in supercharger for reliable priming and high-speed capability, alongside a two-piece housing for simplified service access—a feature that reduces downtime during maintenance. The use of replaceable bronze-clad port plates further ensures long-term performance consistency.
Specifications and Performance Data
For engineers specifying components, the PAVC38 offers a compelling balance of flow and pressure.
Displacement and Flow Rates
With a geometric displacement of 38 cm³/rev (2.3 in³/rev), the PAVC38 delivers significant fluid volume. At 1200 RPM, the pump provides a flow of 45.0 LPM (11.9 GPM), which escalates to 67.8 LPM (17.9 GPM) at its rated speed of 1800 RPM.
Pressure and Speed Capabilities
The PAVC38 is engineered for medium-pressure open-circuit systems. It has a continuous operating pressure rating of 207 bar (3000 PSI), with the ability to handle a maximum speed of 3000 RPM. At peak efficiency, it demands an input power of 24.6 kW (33.0 hp) to generate maximum pressure. The pump maintains a relatively low noise profile, producing approximately 78 dB(A) at full 207 bar pressure, making it suitable for environments with noise sensitivity.
Control Systems and Customization
The versatility of the PAVC38 is largely due to its sophisticated, field-changeable cartridge-type controls. This modularity allows the pump to adapt to diverse hydraulic architectures without needing to replace the entire unit.
Key control options include:
Pressure Compensation: The most common application, this setting destokes the pump once a set pressure is reached, maintaining constant pressure and reducing power consumption.
Load Sensing: This option matches flow and pressure to the load's demands, offering superior energy efficiency in mobile and industrial equipment.
Power (Torque) Limiting: Prevents overloading of the prime mover by limiting input torque at high pressures.
Electro-Hydraulic Controls: Options exist for remote flow and pressure control (servo control), enabling precise integration with complex electronic systems.
Application Scenarios
The PAVC38's combination of durability, controllability, and performance makes it a staple in various demanding industries.
Case Study: Injection Molding
In injection molding, precise and repeatable cycle times are critical. The PAVC38, when equipped with load-sensing or pressure-compensated controls, can be used for clamping and injection operations. It provides high pressure for the injection phase and seamlessly reduces flow during the holding and cooling phases, optimizing energy consumption per cycle.
Case Study: Mobile Construction Equipment
In applications like small excavators or telescopic handlers, the pump must handle continuously varying loads. The PAVC38’s pressure compensation ensures that when the operator is not moving a cylinder, the pump automatically de-strokes to standby pressure, significantly reducing fuel consumption and heat generation in the hydraulic system.
Industrial Machinery: Presses and Machine Tools
Medium-sized presses and machine tools benefit from the pump’s ability to deliver rapid traverse at low pressure and a controlled, high-pressure approach for the work cycle, all managed by the integrated controls.
For more information on the PAVC38 hydraulic pump, please visit https://www.baolilaihydraulic.com/product/.
Specifications
| Pump Model | Displacement
cc/rev (In³/rev) |
Pump Delivery @ 21 bar (300 PSI) in LPM (GPM) | ↑ Approx. Noise Levels dB(A)
@ Full Flow 1800 RPM (1200 RPM) |
Input Power At
1800 RPM, Max. Displacement & 207 bar (3000 PSI) |
Operating Speed (RPM) (Maximum) | Pressure
bar (PSI) Continuous (Maximum) |
||||
| 1200 RPM | 1800 RPM | 34 bar
(500 PSI) |
69 bar
(1000 PSI) |
138 bar
(2000 PSI) |
207 bar
(3000 PSI) |
|||||
| PAVC33 | 33(2.0) | 39.4 (10.4) | 59.0 (15.6) | 75 (69) | 76 (72) | 78(75) | 79(77) | 21.3 kw (28.5 hp) | 3000 | 207 (3000) |
| PAVC38 | 38(2.3) | 45.0 (11.9) | 67.8 (17.9) | 75 (69) | 76 (72) | 78 (75) | 79 (77) | 24.6 kw (33.0 hp) | 3000 | 207 (3000) |
| PAVC65 | 65(4.0) | 78.7 (20.8) | 118.1 (31.2) | 77 (75) | 78 (76) | 80 (78) | 81 (79) | 43.1kw (57.8 hp) | 3000 | 207 (3000) |
| PAVC100 | 100(6.1) | 119.6(31.6) | 179.8 (47.5) | 83 (77) | 82 (78) | 82 (79) | 85 (80) | 71.2 kw (95.5 hp) | 2600 | 207 (3000) |
Selection Table
| PAVC38 hydraulic pump |
| Model Code |
| PAVC382L416 |
| PAVC382L4216 |
| PAVC382L42A16 |
| PAVC382L4A16 |
| PAVC382L4AP16 |
| PAVC382R416 |
| PAVC382R4216 |
| PAVC382R42A16 |
| PAVC382R42AM16 |
| PAVC382R42C16 |
| PAVC382R42H16 |
| PAVC382R42HM16 |
| PAVC382R42M16 |
| PAVC382R42P16 |
| PAVC382R4516 |
| PAVC382R45C16 |
| PAVC382R45M16 |
| PAVC382R4A16 |
| PAVC382R4C16 |
| PAVC382R4CM16 |
| PAVC382R4H16 |
| PAVC382R4HM16 |
| PAVC382R4M16 |
| PAVC382R4P16 |
| PAVC388L42AP16 |
| PAVC388L4A16 |
| PAVC388R416 |
| PAVC388R42AP16 |
| PAVC3892L416 |
| PAVC3892L42A16 |
| PAVC3892L42C16 |
| PAVC3892L4A16 |
| PAVC3892L4C16 |
| PAVC3892L4M16 |
| PAVC3892R416 |
| PAVC3892R42M16 |
| PAVC3892R45M16 |
| PAVC3892R4A16 |
| PAVC3892R4AP16 |
| PAVC3892R4C16 |
| PAVC3898L42A16 |
| PAVC3898L4516 |
| PAVC3898R4216 |
| PAVC389B2L4216 |
| PAVC389B2L42A16 |
| PAVC389B2L42AP16 |
| PAVC389B2L42H16 |
| PAVC389B2L4AP16 |
| PAVC389B2R42AP16 |
| PAVC389B2R4A16 |
| PAVC389B8L42A16 |
| PAVC389BL2M16X3300 |
| PAVC389BL4***P16 |
| PAVC389BL42A16 |
| PAVC389BL45AP16 |
| PAVC389BL4A16 |
| PAVC389BR216 |
| PAVC389BR416 |
| PAVC389BR4216 |
| PAVC389BR4A16 |
| PAVC389BR4M16 |
| PAVC389L4216 |
| PAVC389L42A16 |
| PAVC389L4A16 |
| PAVC389R4216 |
| PAVC389R42A16 |
| PAVC389R42C16 |
| PAVC389R42CM16 |
| PAVC389R42H16 |
| PAVC389R45M16 |
| PAVC389R4A16 |
| PAVC389R4AP16 |
| PAVC389R4C16 |
| PAVC389R4M16 |
| PAVC38B2L4***16 |
| PAVC38B2L416 |
| PAVC38B2L4216 |
| PAVC38B2L42A16 |
| PAVC38B2L42C16 |
| PAVC38B2L42CM16 |
| PAVC38B2L45A16 |
| PAVC38B2L4A16 |
| PAVC38B2L4AP16 |
| PAVC38B2L4C16 |
| PAVC38B2L4M16 |
| PAVC38B2R4***16 |
| PAVC38B2R416 |
| PAVC38B2R4216 |
| PAVC38B2R42A16 |
| PAVC38B2R42C16 |
| PAVC38B2R42H16 |
| PAVC38B2R45A16 |
| PAVC38B2R4A16 |
| PAVC38B2R4AP16 |
| PAVC38B2R4C16 |
| PAVC38B2R4CP16 |
| PAVC38B2R4HM16 |
| PAVC38B2R4M16 |
| PAVC38B2R4P16 |
| PAVC38B8L416 |
| PAVC38B8L42A16 |
| PAVC38B8R416 |
| PAVC38BL416 |
| PAVC38BL4216 |
| PAVC38BL42A16 |
| PAVC38BL42AP16 |
| PAVC38BL42M16 |
| PAVC38BL4A16 |
| PAVC38BL4AM16 |
| PAVC38BL4AP16 |
| PAVC38BL4M16 |
| PAVC38BL4P16 |
| PAVC38BR416 |
| PAVC38BR4216 |
| PAVC38BR42A16 |
| PAVC38BR42AP16 |
| PAVC38BR42H16 |
| PAVC38BR42M16 |
| PAVC38BR42W16 |
| PAVC38BR4516 |
| PAVC38BR45H16 |
| PAVC38BR4A16 |
| PAVC38BR4AM16 |
| PAVC38BR4AP16 |
| PAVC38BR4C16 |
| PAVC38BR4CM16 |
| PAVC38BR4H16 |
| PAVC38BR4M16 |
| PAVC38BR4P16 |
| PAVC38L416 |
| PAVC38L4216 |
| PAVC38L42A16 |
| PAVC38L42C16 |
| PAVC38L42M16 |
| PAVC38L4516 |
| PAVC38L4A16 |
| PAVC38L4C16 |
| PAVC38L4CP16 |
| PAVC38L4H16 |
| PAVC38L4HP16 |
| PAVC38L4P16 |
| PAVC38R4***16 |
| PAVC38R416 |
| PAVC38R4216 |
| PAVC38R4216X3975 |
| PAVC38R42A16 |
| PAVC38R42AM16 |
| PAVC38R42AP16 |
| PAVC38R42C16 |
| PAVC38R42H16 |
| PAVC38R42HM16 |
| PAVC38R42HMP16 |
| PAVC38R42M16 |
| PAVC38R42P16 |
| PAVC38R4516 |
| PAVC38R45A16 |
| PAVC38R45C16 |
| PAVC38R45CM16 |
| PAVC38R45H16 |
| PAVC38R45M16 |
| PAVC38R4A16 |
| PAVC38R4AP16 |
| PAVC38R4C16 |
| PAVC38R4CM16 |
| PAVC38R4H16 |
| PAVC38R4HM16 |
| PAVC38R4M16 |
| PAVC38R4ME16 |
| PAVC38R4P16 |
| PAVC38R4S16 |
| PAVC38S2L416 |
| PAVC38S2L4216 |
| PAVC38S2L4C16 |
| PAVC38S2R416 |
| PAVC38SL4A16 |
| PAVC38SL4H16 |
| PAVC38SR416 |
| PAVC38SR4216 |
| PAVC38SR42A16 |
| PAVC38SR4A16 |
| PAVC38SR4H16 |
| PAVC38SR4HM16 |
| PAVC38SR4HP16 |
Q1: What differentiates the PAVC38 from the larger PAVC65 or PAVC100?
A1: The primary differentiation is displacement volume and operating pressure. While the PAVC38 provides 38 cc/rev and a standard pressure of 207 bar (3000 PSI), the PAVC65 and PAVC100 offer higher displacement (65 and 100 cc/rev) but are often categorized in higher pressure bands for heavier machinery. The PAVC38 is the ideal choice for medium-duty applications requiring flow efficiency and precision.
Q2: What are the key maintenance considerations for the PAVC38?
A2:Due to its cast-iron housing and precision internals, it is vital to maintain fluid cleanliness to ISO specifications. The pump’s design includes an airbleed standard for quick priming, which is critical for dry start prevention. The case drain line is designed to handle up to 7 bar (100 PSI) for filtered or cooled oil, which helps in thermal management.
Q3: What is the price and delivery time of the PAVC38 hydraulic pump?
A3: The specific price and delivery time will be provided based on the specific model you provide.
Q4:How to purchase a PAVC38 hydraulic pump?
A4:You can visit https://www.baolilaihydraulic.com/contact/ to contact us and purchase our products through various methods.
