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ASE Series Yuken AC Servo Motor Driven Pumps

1. Product Overview

The YUKEN ASE Series is an innovative electro-hydraulic integrated servo pump system that directly drives a piston pump with an AC servo motor, combining the advantages of both electric and hydraulic systems. It is primarily designed as a high-efficiency hydraulic power source for industrial machinery, particularly excelling in injection molding applications.

2. Core Features

1. Excellent Energy-Saving Effect

  • On-demand oil supply: Adjusts flow and pressure in real-time according to system requirements, eliminating overflow losses
  • Energy savings of 30-70%: Compared to traditional fixed displacement pump systems with throttling control
  • Reduced heat generation: Lower energy consumption minimizes hydraulic oil temperature rise, extending oil life and reducing cooling system load

2. Compact Integrated Design

  • All-in-one unit: Integrated motor and piston pump assembly saves up to 70% installation space
  • Simplified piping: Reduced hydraulic connections improve system reliability and reduce leakage risks
  • Lightweight construction: Easier handling and installation compared to separate motor-pump configurations

3. Precision Control Performance

  • Precise speed/torque control: Utilizes YUKEN’s proprietary analog electronic encoder algorithm without requiring additional encoders
  • Fast response time: Servo motor control enables rapid acceleration/deceleration and pressure changes
  • Stable pressure holding: Maintains consistent pressure during molding cycles, improving product quality consistency

4. Low Noise and Environmental Protection

  • Noise reduction of 10-15dB: Quieter operation than conventional hydraulic systems
  • EMC filter: Environmentally friendly design reduces electrical noise interference
  • Lower carbon footprint: Energy efficiency contributes to reduced greenhouse gas emissions

3. Model Specifications

Model
Type
Displacement (cm³/rev)
Max Pressure (MPa)
Applications
ASE3
Single displacement
3
21
Small injection molding machines, precision presses
ASE5
Single displacement
5
21
Medium-small injection molding machines
ASE10
Single displacement
10
21
Medium injection molding machines
ASE10W
Dual displacement
10/3
21
Machines requiring wide flow range
ASE15W
Dual displacement
15/5
21
Large machines with varying flow demands
All models operate at a maximum pressure of 21MPa (3,050psi)

4. System Composition and Working Principle

1. Basic Structure

  • AC servo motor: High-efficiency, brushless design with precise speed control
  • Axial piston pump: YUKEN’s high-performance pump with low noise and high efficiency
  • Dedicated servo controller: AMSR controller for integrated pump-motor control
  • Operation panel: User-friendly interface for monitoring and parameter adjustment
  • Safety protection system: Comprehensive error detection and alarm functions

2. Working Principle

  1. The servo controller receives flow/pressure commands from the host machine (e.g., injection molding machine)
  2. Controls the servo motor’s rotational speed and torque to adjust pump output precisely
  3. Delivers only the required amount of hydraulic oil at the exact pressure needed
  4. Eliminates energy waste from traditional relief valve overflow

5. Main Application Fields

  1. Injection molding machines: Ideal for precision molding with fast cycle times and stable quality
  2. Die casting machines: High pressure and flow control for casting processes
  3. Hydraulic presses: Precise pressure control for forming operations
  4. Plastic extrusion equipment: Consistent flow for uniform product dimensions
  5. Power machinery: Low noise and energy efficiency for power generation facilities
  6. Automated production lines: Fast response and compact design for space-constrained applications

6. Summary of Technical Advantages

The ASE Series represents a significant advancement in hydraulic power technology by combining:
  • Energy efficiency: Reduced operational costs and environmental impact
  • Precision control: Enhanced product quality and process repeatability
  • Space saving: Compact design simplifies machine layout and installation
  • Low noise: Improved working environment and compliance with noise regulations
  • Reliability: Fewer components and reduced heat extend system lifespan
For detailed technical specifications, installation guidelines, and maintenance procedures, please refer to the official YUKEN ASE Series Instruction Manual.