Complete Guide to [Yuken / Vickers / Parker] Hydraulic Pump Model Selection

1. Core Principles of Hydraulic Pump Model Selection

1.1 Clarify System Operating Conditions

• Working Pressure: Determine the maximum working pressure and continuous working pressure of the system. The pump’s rated pressure must be 10%-20% higher than the system’s maximum working pressure to avoid long-term overload operation.
• Flow Requirement: Calculate the total flow required by the system (including leakage loss), and select a pump with a flow rate that meets or slightly exceeds the calculated value. For variable-displacement pumps, pay attention to the adjustable flow range.
• Medium and Temperature: Confirm the type of hydraulic fluid (e.g., mineral oil, synthetic oil) and the operating temperature range (-20℃ to 80℃ for most industrial scenarios). This determines the pump’s material, seal type, and viscosity adaptability.
• Installation and Space: Consider the pump’s installation orientation (horizontal/vertical), connection method (flange/foot mount), and space constraints, which affect the selection of pump structure and size.
• Control Requirements: Determine whether the system needs variable displacement, pressure compensation, flow regulation, or proportional control, which directly affects the choice of pump control mode.

1.2 Key Selection Criteria

• Efficiency: Prioritize pumps with high volumetric efficiency and mechanical efficiency to reduce energy consumption, especially for high-power systems.
• Reliability: Select models with mature technology, stable performance, and a long service life, considering the manufacturer’s quality control and after-sales support.
• Interchangeability: Choose models with standard interfaces and dimensions to facilitate maintenance, replacement, and spare parts procurement.
• Cost-Effectiveness: Balance initial purchase cost, maintenance cost, and energy consumption, avoiding blind pursuit of high specifications or low prices.

2. Overview of Yuken, Vickers, and Parker Hydraulic Pumps

2.1 Yuken Hydraulic Pumps

Core Advantages

• High precision and low noise: The vane pumps and piston pumps adopt advanced structural design, with stable operation and noise levels as low as 55dB.
• Strong adaptability: Suitable for harsh working conditions, with good resistance to oil contamination and wide viscosity adaptability (ISO VG32-VG100).
• Cost-effective: Balanced performance and price, with mature after-sales service and easy access to spare parts globally.

Main Product Series

• Vane Pumps: PV2R series (single/double vane pumps), PVR series (single vane pumps), PVL series, widely used in medium-pressure systems (6.3-21MPa).
• Piston Pumps: A series (A10, A16, A22, A37, A56, A70, A90, A145), AR series (AR16, AR22), A3H series, suitable for high-pressure systems (up to 31.5MPa), widely used in injection molding machines, oil presses, and steel plants.

2.2 Vickers Hydraulic Pumps

Core Advantages

• High pressure resistance: Piston pumps can withstand working pressures up to 42MPa, suitable for high-load, high-pressure systems.
• Advanced control technology: Rich control modes (pressure compensation, flow compensation, proportional control) to meet complex system requirements.
• Strong durability: Adopt high-strength materials and precision machining, with long service life and low failure rate in harsh environments.

Main Product Series

• Vane Pumps: V10, V20 series (fixed-displacement vane pumps), VQ series (variable-displacement vane pumps), suitable for medium-pressure mobile and industrial systems.
• Piston Pumps: PVB, PVH, PVE series (axial piston pumps), with variable displacement and high pressure resistance, widely used in construction machinery, mining equipment, and aerospace.

2.3 Parker Hydraulic Pumps

Core Advantages

• High efficiency and energy saving: Adopt advanced hydraulic technology (e.g., double-arc sine curve tooth profile for gear pumps) to reduce energy loss and improve system efficiency.
• Integrated solutions: Can provide matching valves, filters, and hydraulic accessories, facilitating system integration and reducing design complexity.
• Intelligent control: Support digital control and remote monitoring, suitable for automated and intelligent hydraulic systems.

Main Product Series

• Vane Pumps: PVplus series, V1 series, with high volumetric efficiency and low noise, suitable for industrial and mobile systems.
• Piston Pumps: PVP, PVH series (axial piston pumps), PGM series (gear pumps), with variable displacement and high reliability, used in automotive, aerospace, and industrial automation.
• Gear Pumps: GP, GPC series, featuring no trapped oil phenomenon, low noise, and long service life, suitable for low to medium pressure systems.

3. Model Interpretation of Key Product Series

3.1 Yuken Model Interpretation (Taking A Series Piston Pump as Example)

• A: Series identifier (A series variable piston pump).
• 37: Pump displacement (common displacements: 37, 45, 56, 70, 90, 100, 125, 145, 220).
• F: Installation form (F: Flange mount; L: Foot mount).
• R: Rotation direction (R: Clockwise; L: Counterclockwise).
• 04: Control mode (01: Pressure compensation control; 04: Electro-hydraulic proportional load-sensitive control).
• H: Pressure level (B: 1.5~7MPa; C: 1.5~16MPa; H: 1.5~21MPa).
• K: Shaft extension form (K: Flat key).
• 32393: Design number (common design numbers: 32, 32366, 10393, 10356, 32393).

3.2 Vickers Model Interpretation (Taking PVH Series Piston Pump as Example)

• PVH: Series identifier (PVH series variable axial piston pump).
• 098: Frame size (corresponding to displacement range).
• R: Rotation direction (R: Clockwise; L: Counterclockwise).
• 01A: Control option (01A: Pressure compensation control; 02A: Flow compensation control).
• J30: Mounting flange standard (J30: SAE J30 flange).
• A25: Shaft extension type (A25: SAE 25 spline shaft).
• 000001001AB010A: Additional configuration (seal type, port size, etc.).

3.3 Parker Model Interpretation (Taking PVP Series Piston Pump as Example)

• PVP: Series identifier (PVP series variable axial piston pump).
• 16: Frame size (16: Small frame; 23: Medium frame; 33: Large frame).
• 36: Displacement (36cc/rev).
• B: Control mode (B: Pressure compensation; C: Flow compensation; D: Proportional control).
• 2: Mounting type (2: Flange mount; 3: Foot mount).
• R: Rotation direction (R: Clockwise; L: Counterclockwise).
• 26: Shaft extension type (26: SAE 26 spline shaft).
• A11: Port size and seal type (A11: Standard port, nitrile seal).

4. Step-by-Step Selection Process

Step 1: Determine System Core Parameters

Step 2: Select Pump Type (Vane/Piston/Gear)

• Vane Pump: Suitable for medium pressure (6.3-21MPa), low noise, and high flow stability—prefer Yuken PV2R series, Vickers V10/V20 series, or Parker PVplus series.
• Piston Pump: Suitable for high pressure (≥21MPa), high efficiency, and variable displacement—prefer Yuken A series, Vickers PVH series, or Parker PVP series.
• Gear Pump: Suitable for low-medium pressure (≤16MPa), simple structure, and low cost—prefer Parker GP series.

Step 3: Narrow Down Brand Options Based on Application Scenarios

• Industrial Machinery (Injection Molding Machines, Machine Tools): Prioritize Yuken (cost-effective, low noise) or Parker (integrated solutions).
• Mobile Hydraulics (Construction Machinery, Mining Equipment): Prioritize Vickers (high pressure, durability) or Parker (energy-saving, intelligent control).
• High-Precision, Automated Systems: Prioritize Yuken (high precision) or Parker (intelligent control).

Step 4: Confirm Model Specifications

Step 5: Verify Compatibility

• Check whether the pump’s installation size, interface standard (flange, shaft extension), and control mode are compatible with the system.
• Confirm that the hydraulic fluid type and viscosity are consistent with the pump’s requirements.

Step 6: Optimize Cost and After-Sales

5. Common Selection Mistakes and Avoidance Methods

• Mistake 1: Blindly Pursuing High Pressure – Selecting a pump with a rated pressure much higher than the system’s actual requirement leads to increased cost and energy waste. Solution: Calculate the system’s maximum pressure accurately and select a pump with a rated pressure 10%-20% higher than the maximum pressure.
• Mistake 2: Ignoring Flow Matching – Selecting a pump with insufficient flow causes system underperformance, while excessive flow leads to energy waste. Solution: Calculate the total flow (including leakage) and select a pump with a flow rate 5%-10% higher than the calculated value.
• Mistake 3: Neglecting Medium and Temperature – Using a pump not suitable for the hydraulic fluid or operating temperature leads to seal damage and shortened service life. Solution: Confirm the fluid type and temperature range and select a pump with matching material and seal.
• Mistake 4: Ignoring Control Mode – Selecting a fixed-displacement pump for a system that requires flow/pressure regulation leads to poor system performance. Solution: Clarify the control requirements and select a variable-displacement pump with the appropriate control mode.

6. Summary