YUKEN Piston Pump/Vane Pump Hydraulic Pumps
YUKEN Piston Pump/Vane Pump Hydraulic Pumps
1. Overview of YUKEN Hydraulic Pumps
YUKEN (Yuken Kogyo Co., Ltd.) is a leading global manufacturer of hydraulic components, offering a comprehensive range of piston pumps and vane pumps for industrial and mobile hydraulic systems. These pumps are designed to meet the demanding requirements of various applications, including high pressure capability, energy efficiency, precise control, and durability in harsh operating environments. YUKEN hydraulic pumps feature advanced technology, robust construction, and multiple control options to ensure consistent performance in industrial machinery, construction equipment, and manufacturing processes.
2. Main Series of YUKEN Piston Pumps
YUKEN provides a wide range of piston pump series optimized for different hydraulic applications, each offering unique features to meet specific requirements:
2.1 Variable Displacement Axial Piston Pumps (A Series)
The A series is YUKEN’s flagship line of variable displacement axial piston pumps, widely used in industrial and mobile hydraulic systems requiring high power density and precise control.
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Key Features:
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Swash plate design for compact size and high efficiency (up to 95%)
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Continuous operating pressure up to 31.5 MPa (4,560 psi), peak pressure up to 35 MPa (5,075 psi)
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Displacement range: 10-219 cm³/rev (0.61-13.36 cu in) to match various machine sizes
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Multiple control options including pressure compensator, load sensing, and electro-hydraulic proportional control
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Low noise operation (≤75 dB) for operator comfort in manufacturing facilities
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High reliability with service life exceeding 10,000 hours under continuous load
Sub-series and Common Models:
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AR Series: Pressure compensator control (AR16, AR22, AR37, AR56, AR70, AR90, AR145)
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AE Series: Electro-hydraulic proportional control (AE16, AE22, AE37, AE56, AE70)
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AS Series: Load sensing control (AS16, AS22, AS37, AS56, AS70)
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A3H Series: New generation high-performance pumps for heavy-duty applications
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ARL1 Series: Compact low-noise pumps (6.2-16.3 cm³/rev) for small hydraulic systems
2.2 Fixed Displacement Piston Pumps (P Series)
YUKEN’s P series fixed displacement piston pumps provide constant flow for specific hydraulic functions requiring stable power delivery.
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Key Features:
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High efficiency and low noise operation
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Continuous pressure rating up to 28 MPa (4,060 psi)
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Compact design for space-limited installations
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Available in various displacements to match specific flow requirements
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Multiple mounting options: Flange (F) and Foot (L)
Common Models:
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P16, P22, P37, P56, P70, P90, P100, P145 (cm³/rev)
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Rotation directions: Clockwise (R) and Counterclockwise (L)
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Mounting types: Flange (F) and Foot (L) configurations
3. Main Series of YUKEN Vane Pumps
YUKEN’s vane pump series are designed for medium-pressure applications requiring smooth flow and low noise operation.
3.1 Fixed Displacement Vane Pumps (PV2R Series)
The PV2R series is YUKEN’s most popular vane pump line, widely used in industrial machinery for its reliability and performance.
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Key Features:
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High pressure capability up to 21 MPa (3,050 psi)
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Low noise operation (≤65 dB) with high-order stator curve design
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Smooth flow delivery with low pulsation
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Compact design with high power density
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Easy maintenance with cartridge-type construction
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Volumetric efficiency ≥92% for energy-saving operation
Sub-series and Common Models:
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PV2R1 Series: 5.8-31 cm³/rev (6, 8, 10, 12, 14, 17, 19, 23, 25, 31)
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PV2R2 Series: 36-65 cm³/rev (36, 41, 47, 53, 59, 65)
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PV2R3 Series: 76-153 cm³/rev (76, 94, 116, 125, 146, 153)
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PV2R4 Series: 184-237 cm³/rev (184, 200, 237)
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PV2R Double Pumps: Combined single pumps with two discharge ports for separate circuits
3.2 Variable Displacement Vane Pumps (SVP Series)
The SVP series offers variable displacement capability for applications requiring flow control and energy efficiency.
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Key Features:
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Variable displacement design with pressure compensator control
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Operating pressure up to 16 MPa (2,320 psi)
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Low noise operation and lightweight construction
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Flow rate adjustable from 0 to maximum displacement
Common Models:
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SVP1-20, SVP1-30, SVP1-40 (single pump)
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SVPDF-30-35-40-35-20 (double variable vane pump)
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Control options: Pressure compensator and remote pressure control
4. Model Coding System for YUKEN Hydraulic Pumps
YUKEN uses a standardized coding system to clearly identify key specifications of its hydraulic pumps:
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Code Position
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Description
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Examples for Piston/Vane Pumps
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|---|---|---|
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Series Identifier
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Indicates the basic pump type
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A (axial piston), P (fixed piston), PV2R (vane), SVP (variable vane)
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Displacement Code
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Nominal displacement in cm³/rev
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37 (37 cm³/rev), 70 (70 cm³/rev), 145 (145 cm³/rev) for piston pumps; 17, 63, 125 for vane pumps
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Control Type
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Indicates the control mechanism (for piston pumps)
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R (pressure compensator), E (electro-hydraulic), S (load sensing)
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Mounting Type
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Installation configuration
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F (flange), L (foot) for piston pumps; various for vane pumps
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Rotation Direction
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Viewed from shaft end
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R (clockwise), L (counterclockwise)
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Design Number
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Specific design variation
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01, 02, 03 for piston pumps; various for vane pumps
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4.1 Detailed Model Interpretation
Example 1 (Piston Pump): A70-L-R-01
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A: Axial piston pump series
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70: Nominal displacement (70 cm³/rev)
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L: Foot mounting type
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R: Pressure compensator control
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01: Design number
Example 2 (Vane Pump): PV2R3-125-F-R-01
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PV2R3: Vane pump series (size 3)
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125: Nominal displacement (125 cm³/rev)
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F: Flange mounting type
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R: Clockwise rotation
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01: Design number
5. Technical Parameters Comparison
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Parameter Item
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A70-L-R-01 (Piston)
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PV2R3-125-F-R (Vane)
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SVP1-40 (Variable Vane)
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Unit
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|---|---|---|---|---|
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Nominal Displacement
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70
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125
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40
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cm³/rev
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Pump Type
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Variable Displacement Axial Piston
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Fixed Displacement Vane
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Variable Displacement Vane
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–
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Continuous Operating Pressure
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31.5 (4,560 psi)
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21 (3,050 psi)
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16 (2,320 psi)
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MPa
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Peak Operating Pressure
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35 (5,075 psi)
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25 (3,625 psi)
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18 (2,610 psi)
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MPa
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Rated Speed (Full Stroke)
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1800
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1800
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1800
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rpm
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Maximum Speed
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2400
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2000
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2000
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rpm
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Minimum Speed
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600
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600
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600
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rpm
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Maximum Flow Rate (at Rated Speed)
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126
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225
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72
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L/min
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Operating Temperature Range
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-20 ~ 95
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-10 ~ 80
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-10 ~ 80
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°C
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Oil Cleanliness Requirement
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NAS 6 or higher
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NAS 7 or higher
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NAS 7 or higher
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–
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Weight (Typical)
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32
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28
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22
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kg
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6. Key Features of YUKEN Hydraulic Pumps
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High Efficiency: Advanced design and precision manufacturing ensure high volumetric and overall efficiency, reducing energy consumption by up to 30% compared to conventional pumps.
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Low Noise Operation: Special design features including high-order stator curves (vane pumps) and optimized swash plate geometry (piston pumps) reduce noise levels to 64-75 dBA, improving workplace environment.
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Durable Construction: Robust housing, high-load bearings, and wear-resistant materials ensure reliable operation under continuous heavy loads, extending service life to 8,000-12,000 hours.
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Multiple Control Options: Various control mechanisms including pressure compensator, load sensing, and electro-hydraulic proportional control for precise operation and energy optimization.
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Compact Design: Space-saving configurations for installation in tight machine compartments, maximizing available workspace in industrial facilities.
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Easy Maintenance: Modular design allows for quick replacement of wear parts, minimizing downtime for industrial operations.
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Wide Application Range: Suitable for various industrial and mobile applications with displacement options from 6 to 219 cm³/rev and pressure ratings from 16 to 31.5 MPa.
7. Application Fields of YUKEN Hydraulic Pumps
YUKEN piston and vane pumps are widely used in various industries, providing hydraulic power for critical functions:
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Industrial Machinery: Injection molding machines, die casting machines, hydraulic presses, and machine tools (CNC machines, grinders).
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Construction Equipment: Cranes, excavators, loaders, and road rollers requiring high power and precise control.
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Material Handling: Forklifts, automated guided vehicles (AGVs), and conveyor systems for efficient material movement.
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Metallurgical Equipment: Rolling mills, continuous casting machines, and forging equipment for heavy-duty metal processing.
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Plastic Machinery: Extruders, blow molding machines, and thermoforming equipment for plastic processing.
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Mobile Hydraulics: Agricultural machinery, forestry equipment, and special-purpose vehicles requiring reliable hydraulic power.
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Automotive Industry: Presses, assembly lines, and test equipment for vehicle manufacturing.
8. Application Considerations for YUKEN Hydraulic Pumps
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Select the appropriate pump type (piston or vane) based on the application’s pressure and flow requirements: piston pumps for high-pressure (above 21 MPa) applications, vane pumps for medium-pressure (up to 21 MPa) applications with smooth flow needs.
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Choose the right control type (pressure compensator, load sensing, or electro-hydraulic proportional) to optimize energy efficiency and performance for specific operations.
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Ensure compatibility with the prime mover (electric motor or engine) in terms of speed and power, selecting the correct drive type and mounting configuration.
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Consider the environmental conditions (temperature, dust, moisture) to select appropriate seals and protection features, especially for outdoor applications.
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Use recommended hydraulic fluids: petroleum-based anti-wear hydraulic oil (ISO VG 32-68) with NAS 6 or higher cleanliness rating for piston pumps, NAS 7 or higher for vane pumps.
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Follow YUKEN’s installation guidelines for proper alignment, mounting, and piping to reduce vibration and ensure optimal performance.
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Implement regular maintenance procedures including oil analysis, filter replacement, and leak checks to maximize pump service life and reliability.
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Use only genuine YUKEN replacement parts to maintain performance and reliability; non-genuine parts may cause reduced efficiency and premature failure.
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Do not disassemble the pump without authorization; consult YUKEN technical manual or professional maintenance personnel for service.
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Ensure proper ventilation and cooling for the hydraulic system to maintain optimal operating temperature and prevent overheating.
