Belparts final drive kubota TM04I KX101 U30 KX91.2 EX40 excavator travel motor parts

The hydraulic pump of an excavator is the core component of the hydraulic system, providing power to the entire system like a heart. It converts the mechanical energy of the engine into hydraulic energy, drives the hydraulic cylinder and hydraulic motor to work, and thus completes various actions of the excavator.

1, Types of hydraulic pumps

Excavator hydraulic pumps are mainly divided into the following two categories:

Gear pump: With a simple structure, low cost, and strong anti pollution ability, but with large flow pulsation and high noise, it is mostly used in small excavators or auxiliary systems.

Piston pump: with complex structure and high cost, but high working pressure, large flow rate, high efficiency, and high control accuracy, it is widely used in medium and large excavators.

2, Working principle of hydraulic pump

The working principle of hydraulic pumps is based on changes in volume. Taking plunger pump as an example:

Oil suction process: The plunger moves backwards, the pump chamber volume increases, forming a vacuum, and the hydraulic oil in the oil tank enters the pump chamber under atmospheric pressure.

Oil pressure process: The plunger moves forward, the pump chamber volume decreases, the hydraulic oil is compressed, the pressure increases, the oil outlet valve is pushed open, and high-pressure oil enters the hydraulic system.

3, Performance parameters of hydraulic pump

Displacement: The volume of oil discharged by the pump shaft per revolution, measured in mL/r, determines the working speed and force of the excavator.

Pressure: The pressure of the oil at the pump outlet, measured in MPa, determines the working capacity of the excavator.

Rotational speed: The rotational speed of the pump shaft, measured in r/min, affects the flow rate and lifespan of the pump.

Efficiency: The ratio of output power to input power of a pump, reflecting energy loss.

Main Business Model

The main machine model as below:

Belparts is a high-tech enterprise specializing in the research and development, production, and sales of excavator parts. The company is committed to providing high-quality and reliable excavator parts to global customers, with rich industry experience and technological advantages.

Mainly engaged in excavator hydraulic pumps, final drive, travel motors, swing motors, distribution valves,control valve assy,reduction gearbox,cylinder assy and various hydraulic spare parts.
Excavator hydraulic one-stop service, we can provide Komatsu, Hitachi, Kato, Doosan, Hyundai, Sany, Liugong, Sunward Intelligent, hydraulic pumps of various tonnage models, distribution valves, travel assemblies, travel motors, swing motors and hydraulic spare parts.

If you are interested in any models, please tell us the OEM model code, and we can check the prices for you very soon.

After sales guarantee service

1.quick response
Provide a 24-hour service hotline to promptly respond to customer needs and ensure quick resolution of issues.

2.Professional maintenance
Equipped with a professional technical team, providing on-site service, and using original accessories to ensure equipment performance.

3.Regular maintenance
Provide regular maintenance plans to extend equipment lifespan and improve work efficiency.

4.technical support
Provide operational training and technical consultation to help customers better use the equipment.

5.Warranty Commitment
Core components enjoy quality assurance services to ensure customer rights and worry free use.

We always aim for customer satisfaction and ensure efficient operation of equipment!