K1P Series NIHON SPEED Hydraulic Gear Pump | K1P1R11A K1P3R11A K1P6R11A | Aluminum External Gear Pump

The K1P Series Hydraulic Gear Pumps manufactured by Chengyuan Hydraulic are precision-engineered external gear pumps designed for high-pressure, high-speed applications. Built to be 100% interchangeable with NIHON SPEED standards, our K1P series (including K1P1, K1P3, K1P6, and more) ensures a seamless drop-in replacement. Every unit is constructed with a high-strength extruded aluminum alloy body and undergoes 100% simulated condition testing. This guarantees superior volumetric efficiency and minimized operational noise, making it the ideal cost-effective alternative for Japanese-sourced hydraulic components.

Technical Specifications (Bulleted List):

• Model Range: K1P1R11A, K1P2R11A, K1P3R11A, K1P4R11A, K1P6R11A, K1P7R11A, K1P9R11A, K1P10R11A

• Displacement Range: $1.0$ to $10.5\text{ cm}^3\text{/rev}$

• Rated Pressure: $21\text{ MPa (210 bar)}$

• Peak Pressure: $25\text{ MPa (250 bar)}$

• Max Speed: Up to $6000\text{ rpm}$ (varying by displacement)

• Rotation: Right (Clockwise) or Left (Counter-clockwise)

• Housing Material: High-tensile extruded Aluminum Alloy

• Shaft Options: $1:8$ Taper, Straight Key, or Spline Shaft

• Efficiency: Volumetric efficiency $\ge 95\%$, Mechanical efficiency $\ge 90\%$

Key Technical Advantages:

• Precision-Machined Gear Sets: Utilizing high-quality alloy steel with precision grinding and specialized nitriding treatment, our gear sets provide ultra-tight tolerances, reducing pressure ripples and fluid noise during high-speed rotation.

• Floating Pressure-Balanced Side Plates: The internal design incorporates floating side plates that automatically compensate for clearance based on output pressure, maintaining peak volumetric efficiency throughout the pump’s entire service life.

• High-Load DU Bearings: Premium self-lubricating DU bushings offer stable radial support under high-pressure and high-temperature conditions, preventing housing wear caused by shaft eccentricity.

• Superior High-Speed Stability: Optimized internal fluid channels minimize suction resistance, allowing the K1P series to operate reliably at speeds up to $6000\text{ rpm}$ without cavitation risk.

Application Areas:

• Forklifts & Material Handling: Essential for hydraulic steering and lift control circuits.

• Lifting Machinery: Truck tail lifts, scissor lift platforms, and automotive car lifts.

• Industrial Power Units: Compact hydraulic stations and CNC tool changer mechanisms.

Expert Maintenance Tips:

• Suction Line Integrity: Due to its compact size, the K1P series is sensitive to cavitation. Ensure the suction line is perfectly sealed to prevent air ingestion during operation.

• Fluid Cleanliness: Maintain system filtration at $20\text{ }\mu\text{m}$ or better. Adhering to ISO 4406 18/16/13 standards can more than double the pump’s operational lifespan.