MCY14-1B Series Axial Piston Pump | 10MCY 25MCY 40MCY 160SCY | High Pressure Hydraulic Pump

The MCY14-1B (Fixed Displacement) and SCY14-1B (Manual Variable Displacement) series axial piston pumps from Chengyuan Hydraulic are high-reliability power sources for heavy industrial applications. Featuring a center-arranged piston structure, this series offers high power density and excellent self-priming capabilities. For core models like 10MCY, 25MCY, 40MCY, 63SCY, 80MCY, and 160SCY, we have specifically reinforced the seal pairs between the valve plate and the cylinder block. Every pump undergoes 100% simulated high-pressure load testing to ensure volumetric efficiency stays above 95% at 31.5 MPa, guaranteeing 100% original-place interchangeability.

Technical Specifications:

• Series Model: MCY14-1B (Fixed) / SCY14-1B (Manual Variable)

• Displacement Range: 10, 25, 40, 63, 80, 160 (ml/r)

• Rated Pressure: 31.5 MPa (315 bar)

• Peak Pressure: 40 MPa (400 bar)

• Rated Speed: 1500 rpm

• Speed Range: 1000 – 2200 rpm (depending on size)

• Volumetric Efficiency: ≥ 95%

• Medium: Anti-wear hydraulic oil (L-HM32, L-HM46, L-HM68)

• Rotation: Clockwise (from shaft end; CCW optional)

Key Technical Advantages:

• Reinforced Valve Plate Design: The series utilizes alloy copper valve plates and nitrided cylinder blocks. Precision spherical sealing technology ensures extremely low internal leakage under long-term high-pressure operation, significantly reducing heat generation.

• High-Strength Piston Assemblies: Piston heads undergo specialized heat treatment at the ball end, paired with precision-ground slippers. This minimizes frictional resistance at 31.5 MPa, extending the pump’s overall MTBF (Mean Time Between Failures).

• Precise Manual Variation (SCY): The SCY series is equipped with a high-reliability manual adjustment mechanism. By turning the handwheel to change the swashplate angle, users can achieve linear flow regulation without altering motor speed.

• Superior Self-Priming & Low Noise: Optimized suction flow paths reduce resistance, providing excellent self-priming performance at 1500 rpm. The dynamic-balanced cylinder structure ensures low vibration and quiet operation.

Application Areas:

• Forging Machinery: Power systems for hydraulic presses, shearing machines, and bending machines.

• Metallurgy: Tilting devices for steel furnaces and rolling mill press-down systems.

• Marine Equipment: Hydraulic circuits for windlasses, net haulers, and steering gear.

Expert Maintenance Tips:

• Mandatory Initial Priming: Axial piston pumps must never run dry. After installation, you must fill the housing through the drain port with clean hydraulic oil and manually rotate the coupling several times to ensure internal lubrication.

• Independent Drain Line: The drain line (Port L/T) must be plumbed directly to the tank. Ensure the line diameter is sufficient to prevent excessive case pressure, which can damage shaft seals or hinder variable displacement sensitivity.

• Regular Fluid Changes: Given the heavy-duty nature of MCY applications, it is recommended to change the hydraulic oil every 2000 hours and clean the suction filters to prevent oxidized sediment from wearing down the valve plate.