Yuken variable displacement piston pump
Yuken Variable Displacement Piston Pumps: A Comprehensive Overview
Yuken is a leading global manufacturer of hydraulic components, renowned for its high-performance variable displacement piston pumps . These swash plate type pumps are designed with advanced technology to deliver low noise, high efficiency, and exceptional reliability across a wide range of industrial and mobile applications .
🌟 Core Product Series & Key Specifications
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Series
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Max Pressure
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Displacement Range
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Key Features
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Primary Applications
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A Series
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28 MPa (4060 PSI)
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10-145 cm³/rev
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Classic model, 98%+ volumetric efficiency, 90%+ overall efficiency, low heat generation
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Machine tools, injection molding, general industrial
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A3H/A3HG Series
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35 MPa (5080 PSI)
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16.3-180.7 cm³/rev
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High pressure, load sense compensator, thru-drive option
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Construction machinery, heavy industrial, presses
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A7H Series
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35 MPa (max 40 MPa)
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180-265 cm³/rev
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Large displacement, heavy-duty, high reliability
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Large construction equipment, mining machinery
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ARL1 Series
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7 MPa (low pressure)
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6.2-16.3 cm³/rev
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Ultra-compact, lightweight, ultra-low noise (<60 dB)
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Medical devices, semiconductor equipment, precision automation
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A3HM Series
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35 MPa
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16.3-180.7 cm³/rev
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Engine-driven, high rpm (up to 3,400 r/min), mobile-focused
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Construction vehicles, agricultural machinery
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🎛️ Advanced Control Options
Yuken offers 11 types of control methods to meet diverse system requirements :
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Pressure Compensator (FR/01 type): Automatically adjusts displacement based on system pressure, maintaining constant pressure while reducing flow at set pressure
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Solenoid Two-Pressure Control (2FR/02 type): Switches between two preset pressure levels via solenoid
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Proportional Electro-Hydraulic Control: Integrates amplifiers and sensors for precise pressure/flow regulation
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Load Sensing Control (LS): Matches flow to actual load demand, minimizing energy consumption
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Electric Proportional Flow Control: Provides stepless flow adjustment via electrical signal
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Torque Limiting Control: Prevents overload by limiting maximum output torque
🔧 Key Technical Advantages
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Exceptional Efficiency: Volumetric efficiency >98% and overall efficiency >90% (A Series at 16 MPa, 1800 rpm)
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Low Noise Performance: Advanced design reduces noise levels (A16 model: <65 dB)
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Energy Saving: Pressure/flow optimization minimizes heat generation and power consumption
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High Reliability: Precision-machined components, high-strength alloy pistons, and robust construction ensure long service life
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Versatile Mounting: Complies with JIS and ISO 3019-1/2 standards, with SAE options for mobile applications
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Wide Viscosity Range: Operates efficiently with hydraulic fluids from 20 to 400 cSt
📦 Typical Applications
Yuken variable displacement piston pumps are widely used in:
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Industrial Machinery: Injection molding machines, die casting machines, hydraulic presses, machine tools (90% of machine tools applications use A Series)
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Mobile Equipment: Excavators, loaders, forklifts, aerial work platforms, agricultural machinery
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Specialized Systems: Medical equipment, semiconductor manufacturing, laboratory instruments, renewable energy systems
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Automation: Robotic systems, material handling, hydraulic clamping devices
📌 Model Nomenclature Example
A16-F-R-01-C-K-32:
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A16: Series (A) + Displacement (16 cm³/rev)
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F: Flange mounting type
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R: Rotation direction (clockwise)
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01: Control type (pressure compensator)
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C: Frame size
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K: Shaft type
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32: Seal material
💡 Selection Considerations
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Pressure Requirements: Match pump max pressure to system operating pressure (typically 80% of max rating)
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Flow Demand: Calculate required flow rate (Q = displacement × rpm × efficiency)
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Control Needs: Choose appropriate control type based on system functionality (pressure/flow/load sensing)
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Mounting & Connection: Ensure compatibility with ISO/JIS/SAE standards
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Fluid Compatibility: Use recommended hydraulic fluids within specified viscosity range
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Environmental Conditions: Consider temperature, vibration, and contamination levels
Yuken variable displacement piston pumps represent a balance of performance, efficiency, and reliability, making them a preferred choice for hydraulic system designers worldwide . For detailed specifications and application engineering support, refer to Yuken’s official catalogs or contact their technical team .
