NSH Series Hydraulic Gear Pump for MTZ Tractor & Asphalt Paver | NSH-10 NSH-32 NSH-50 NSH-100 | High Pressure Oil Pump

The NSH (НШ) Series external gear pumps by Chengyuan Hydraulic are heavy-duty hydraulic power units specifically engineered for MTZ tractors, T-150, and various Asphalt Pavers. Covering a displacement range from NSH-10 to NSH-100, this series is built to withstand the rigorous demands of agricultural and road construction environments. Utilizing high-strength die-cast aluminum housings and reinforced alloy steel gears, our pumps ensure peak performance in high-temperature and dusty conditions. As Chengyuan’s premier replacement solution, every NSH pump undergoes 100% simulated condition testing to verify internal leakage data under high pressure, guaranteeing 100% original-place interchangeability with OEM equipment.

Technical Specifications:

• Core Models: NSH-10, NSH-32, NSH-50, NSH-100 (Available in A/G and L/R rotation versions)

• Displacement Range: 10 cm³/rev to 100 cm³/rev

• Nominal Pressure: 16 MPa (160 bar)

• Maximum Pressure: 20 MPa (200 bar)

• Rated Speed: 2400 rpm – 3000 rpm (depending on size)

• Volumetric Efficiency: ≥ 92% at rated pressure

• Input Shaft: Rectangular spline or keyed shaft (EU/GOST standards)

• Housing Material: Fatigue-resistant high-pressure cast aluminum alloy

• Seal Material: High-temperature resistant NBR

Key Technical Advantages:

• Floating Bushing Compensation: The NSH series features a floating bushing design that utilizes automatic end-face clearance compensation. This mechanism minimizes internal leakage at high pressures, maintaining high volumetric efficiency over a long service life.

• Three-Piece High-Strength Housing: The housing is die-cast from high-tensile aluminum alloy and heat-treated. Even under the continuous high-heat loads of asphalt pavers, the structure resists deformation, preventing seizure and ensuring durability.

• Precision-Ground Gear Axles: Gears are forged from premium alloy steel, carburized, quenched, and precision-ground. The tooth profile accuracy meets ISO standards, effectively reducing pressure pulsations and mechanical noise during engagement.

• Extreme Environmental Compatibility: Designed for rugged tractor field operations, the sealing system is reinforced to resist dust, mud, and low-quality hydraulic fluids, making it an ideal choice for machinery maintenance in challenging regions.

Application Areas:

• Tractor Hydraulic Systems: Compatible with MTZ-80, MTZ-82, and T-150 for steering and hitch lift controls.

• Pavers & Road Machinery: Used in auxiliary hydraulic circuits and material conveyor controls for asphalt pavers.

• Agricultural Attachments: Suitable for compact hydraulic power units, harvesters, and forestry equipment.

Expert Maintenance Tips:

• Rotation Direction Verification: Always confirm the rotation direction (Left-hand L / Right-hand R) of the drive shaft before installation. NSH pumps are directional; incorrect rotation will lead to immediate shaft seal failure.

• Inlet Vacuum Monitoring: Ensure the suction line is perfectly sealed. NSH pumps are sensitive to cavitation; poor suction will result in sharp noise and rapid wear of the gear faces.

• Hydraulic Fluid Standards: Agricultural machinery often operates in dusty environments. It is recommended to check oil cleanliness every 500 working hours. Maintain oil viscosity between 16-68 mm²/s for optimal lubrication.