Belparts excavator PSVL-42CG E305.5 374-2025 hydraulic main pump

The hydraulic pump converts mechanical energy into hydraulic energy to power the excavator's hydraulic system. When the engine drives the pump shaft to rotate, the internal pistons or gear sets create oil suction and compression processes, forming a high-pressure oil flow. Belparts hydraulic pumps feature variable displacement design that automatically adjusts output flow according to load requirements, achieving high energy efficiency.

A typical hydraulic pump consists of the following key parts:

Proper maintenance extends the hydraulic pump’s lifespan and ensures optimal performance:

• Housing/Casing – Protects internal components and maintains structural integrity.

• Drive Shaft – Transmits power from the engine to the pump mechanism.

• Rotating Group (Gears, Pistons, or Vanes) – Generates fluid flow and pressure.

• Inlet & Outlet Ports – Allow hydraulic fluid to enter and exit the pump.

• Pressure Relief Valve – Prevents system overload by diverting excess fluid.

• Seals & Bearings – Ensure leak-free operation and reduce friction.

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• Regular Inspection: Check for leaks, unusual noises, and pressure drops.

• Fluid Management: Use high-quality hydraulic oil and replace it as per manufacturer recommendations.

• Filter Replacement: Clean or replace filters to prevent contamination.

• Seal & Bearing Maintenance: Inspect and replace worn seals and bearings periodically.

• Professional Servicing: For major repairs (e.g., piston or gear replacement), consult a certified technician.

GUANGZHOU BELPARTS ENGINEERING MACHINERY LIMITED founded in September 2013, loed in the engineering machinery market in Guangzhou, China. At present , we have one shop, one warehouse and one office as well as a professional team for purchasing, selling, packing, shipping and after-sale service.

Our main products are Excavator Hydraulic spare parts, Hydraulic pump, Swing motor, Travel motor, Final drive, Swing gearbox, Travel gearbox, Control valve,Monitor,Controller, Hydraulic cylinder and other hydraulic items with genuine and aftermarket quality. Until now, our products enjoy high reputation all over the world and have been exported to more than 150 countries and regions, spreading all over the Middle East, Southeast Asia, Africa, North America, South America, Europe and Oceania with its own brand "Belparts" are widely acclaimed by foreign customers.

In February 2023, Belparts Yunnan Tourism Team Building

In April 2024, Belparts participated in the Brazil Construction Machinery Exhibition and visited local clients in Brazil.

In April 2024, Belparts participated in the French Construction Machinery Exhibition and visited clients in France and Spain

In May 2024, Belparts Travel Thailand