PAL PUMPS & M Series Electric Motors:
YUKEN Integrated Hydraulic Power Solution
YUKEN PAL PUMPS & M Series Electric Motors (also known as PM Series) represent a revolutionary integration of variable displacement piston pumps and high-efficiency electric motors into a single, compact unit. This innovative design delivers significant advantages in space savings, noise reduction, and operational efficiency for industrial hydraulic systems.
Core Advantages of Integration
1. Ultra-Compact Design
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Integrated construction: Variable displacement piston pump directly mounted inside the motor housing, eliminating the need for separate mounting brackets and couplings
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Space savings: Overall length reduced by 40-50% compared to conventional pump-motor combinations
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Flexible installation: Can be mounted horizontally or vertically to accommodate diverse machine layouts
2. Exceptional Noise Reduction
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10-15 dB(A) quieter than traditional separate pump-motor setups
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Internal noise isolation: Pump operates within the motor housing, minimizing sound transmission
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Optimized hydraulic circuit: Reduced fluid turbulence for smoother operation and lower noise emissions
3. Enhanced Efficiency & Reliability
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Higher overall efficiency: Direct drive eliminates coupling losses (typically 3-5%)
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Reduced maintenance: Fewer components mean fewer points of failure and simplified service
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Improved heat dissipation: Motor cooling system efficiently removes heat from both motor and pump
Product Range & Specifications
PAL Pumps (Variable Displacement Piston Pumps)
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Model Series
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Displacement (cc/rev)
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Pressure Rating (MPa)
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Compatible Motor Power (kW)
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PM10
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10
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21
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0.75, 1.5
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PM16
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16
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21
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1.5, 2.2
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PM22
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22
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21
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2.2, 3.7
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PM37
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37
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21
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3.7, 5.5
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M Series Electric Motors
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Type: Three-phase induction motors optimized for hydraulic applications
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Voltage: 200V/220V/380V/400V (50/60Hz)
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Insulation class: F-class (155°C) for reliable operation in harsh environments
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Protection rating: IP55 standard (dust and water jet protected)
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Terminal box: Standard on upper side, with left/right side options available
Key Features
PAL Pumps
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Pressure compensator control: Maintains constant pressure regardless of flow demand, reducing energy consumption
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High volumetric efficiency: Precision-machined components ensure minimal internal leakage
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Low friction design: Specialized materials and surface treatments extend service life
M Series Motors
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High starting torque: Ensures reliable pump startup even under load
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Wide speed range: Compatible with variable frequency drives for precise flow control
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CE certified: Meets international safety and performance standards
Applications
The PAL Pumps & M Series Electric Motors combination excels in:
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Machine tools: Injection molding machines, CNC machining centers, press machines
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Industrial machinery: Automated production lines, packaging equipment, material handling systems
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Mobile equipment: Compact hydraulic power units for specialized vehicles
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General hydraulic systems: Where space, noise, and efficiency are critical concerns
Model Designation Example
PM16-01B-1.5-30
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PM16: Model series (16 cc/rev displacement)
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01B: Control type (pressure compensator)
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1.5: Motor power (1.5 kW)
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30: Shaft configuration and other specifications
Why Choose YUKEN's PAL Pumps & M Series Motors?
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One-stop solution: Single unit replaces two separate components, simplifying procurement and installation
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Proven reliability: Backed by YUKEN's 70+ years of hydraulic expertise
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Global support: Available through YUKEN's extensive network of distributors and service centers
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Energy savings: Reduced power consumption through higher efficiency and pressure compensation control
YUKEN's PAL Pumps & M Series Electric Motors set a new standard for compact, quiet, and efficient hydraulic power solutions, making them the ideal choice for modern industrial applications where performance and space optimization are paramount.
