HY125Y-RP HY140Y-RP HY160Y-RP High Pressure Axial Piston Pump | 31.5MPa Heavy Duty Hydraulic Pump

LIC Hydraulic’s HY Series (HY90, HY107, HY125, HY140, HY160) axial piston pumps are engineered as the definitive power core for extreme industrial environments. Primarily utilized in metal extrusion, forging presses, and metallurgical equipment, these pumps are built to withstand continuous high-pressure cycles. We prioritize 100% Drop-in Interchangeability, allowing for seamless replacement of standard industrial units. To guarantee field reliability, every HY pump undergoes 100% simulated condition testing before delivery, ensuring zero-defect performance under maximum load.

Technical Specifications (Bulleted List)

• Model Series: HY125Y-RP / HY140Y-RP / HY160Y-RP

• Geometric Displacement: 125 cc/rev / 140 cc/rev / 160 cc/rev

• Nominal Pressure: 31.5 MPa (315 bar)

• Peak Pressure: 40.0 MPa (400 bar)

• Rated Speed: 1000 – 1500 RPM

• Control Type: RP (Constant power or pressure compensation control)

• Volumetric Efficiency: ≥ 96%

• Noise Level: ≤ 85 dB(A)

• Sealing Material: High-grade Viton (FKM) for thermal stability and leak prevention

Key Technical Advantages

• Spherical Valve Plate Design: The advanced spherical distribution technology provides superior self-centering capabilities under ultra-high pressure, effectively preventing the uneven wear and heat generation common in flat valve plate designs.

• Nitrided Alloy Steel Pistons: Pistons undergo advanced nitriding treatment to enhance surface hardness and shock resistance, maintaining precise tolerances even during 31.5 MPa continuous operation.

• Heavy-Duty Bearing Support: Equipped with oversized tapered roller bearings, the HY series handles immense axial and radial loads, significantly extending the mechanical lifespan during full-load cycles.

• Precision Manufacturing: Through micron-level grinding of the piston-cylinder interface, the internal leakage is minimized, resulting in world-class energy efficiency and thermal stability.

Application Areas

• Metal Processing: Large four-column hydraulic presses, aluminum extrusion machines, and metal balers.

• Metallurgy: Rolling mill hydraulic systems and electric furnace tilting mechanisms.

• Maritime Engineering: Port cranes and dredging vessel hydraulic drives.

Expert Maintenance Tips

• Pre-Start Priming: Always fill the pump housing with clean hydraulic oil through the case drain port before initial start-up. Never jog the motor with a dry pump.

• Contamination Control: Maintain fluid cleanliness to ISO 4406 18/16/13 standards. Filter accuracy should be 10μm or better.

• Drain Line Management: Ensure the case drain line is connected directly to the tank (below oil level) and maintain case pressure below 0.1 MPa to protect the shaft seal.