Yuken P Series Variable Piston Pump | P16 P22 P36 P46 Replacement

Genlu Hydraulic proudly introduces our P Series variable piston pumps, the premier power solution designed for injection molding machines and industrial hydraulic circuits. This series serves as a precise match for Yuken technical standards, comprehensively covering P16, P22, P36, and P46 models, and offering perfect compatibility for configurations including P22-A1-F-R-01, P22-A2-F-R-01, and P22-A3-F-R-01. Genlu unequivocally guarantees 100% Drop-in Interchangeability in mounting interfaces, drive shafts, port layouts, and pressure control logic. Backed by our uncompromising 100% Simulation Load Testing, each pump is validated for pressure response, flow-adjustment linearity, and volumetric efficiency before dispatch, ensuring relentless, high-efficiency, and stable power delivery for your high-cycle injection molding processes.

Technical Specifications

• Product Series: Yuken P Series Variable Piston Pump

• Representative Models: P22-A1-F-R-01, P22-A2-F-R-01, P22-A3-F-R-01

• Displacement Range: 16 cc/rev to 46 cc/rev (Model-dependent)

• Rated Operating Pressure: 160 – 210 bar (Pressure-setting dependent)

• Max Peak Pressure: 250 bar

• Rated Speed: 1500 – 1800 rpm

• Control Mode: Pressure Compensation (A-Type), manual/automatic

• Structural Configuration: Variable piston structure, sub-plate mounting

Key Technical Advantages:

• Superior Response Speed: Features an optimized pressure-compensation mechanism that delivers lightning-fast flow adjustments. It tracks injection molding control signals in real-time, effectively minimizing excess flow loss and drastically reducing total energy consumption.

• High Volumetric Efficiency & Low Noise: Port plates and piston components utilize high-performance, wear-resistant alloys with precision grinding. This minimizes internal bypass and optimizes the internal chamber geometry to suppress fluid pulsations, ensuring quiet operation even at rated pressure.

• Long-Life Wear-Resistant Interfaces: Slipper-to-swashplate and piston-to-retaining plate interfaces are engineered with specialized anti-wear alloys. This maintains minimal friction coefficients even under high-frequency pressure fluctuations and high-speed operation, extending the pump’s service life.

• Versatile Operational Adaptation: Unique pressure compensation logic allows the pump to automatically adjust displacement based on system demand, making it suitable not only for injection molding but also for various hydraulic presses, die-casting machines, and industrial automation equipment.

Application Areas:

• Plastic Processing: Injection molding machine injection/clamping systems, blow molding units.

• Metal Processing: Hydraulic press brakes, punch press auxiliary hydraulic stations.

• Industrial Automation: Hydraulic Power Units (HPUs) for automated lines, lifting, and clamping units.

• Machine Tools: Main hydraulic pump for various hydraulic-controlled machinery.

Expert Maintenance Tips:

• Suction Line Sealing: As a high-precision rotary component, ensure the suction line is perfectly sealed upon installation. Air ingestion must be strictly avoided; otherwise, cavitation will occur, causing abnormal noise and rapid catastrophic failure.

• Fluid Cleanliness Standard: Ensure the system is equipped with high-precision filtration to maintain ISO 4406 18/16/13 standards. A 10μm precision pressure-line filter is strongly recommended.

• Case Drain Requirements: The case drain line must be unobstructed and routed directly back to the reservoir, separate from other return lines. Any backpressure in the drain line will cause premature front-shaft seal failure and external leakage.