Pump Type and Functionality:
The K5V140DTP pump is a variable displacement axial piston pump designed for the hydraulic system of the KOBELCO SK350-8 excavator.
It plays a vital role in providing the necessary hydraulic power to drive various machine functions, such as boom and arm movements, bucket operations, and swing motions.
Displacement and Pressure:
The pump offers a variable displacement feature, allowing it to adjust the flow rate according to the specific requirements of the machine's hydraulic system. The K5V140DTP pump has a maximum displacement of 140 cc/rev and can deliver high-pressure performance, typically operating within a pressure range of 34.3 MPa (4,975 psi).
Drive Shaft and Mounting:
The pump is driven by the excavator's engine through a coupling mechanism. It is typically mounted on the main engine compartment or designated hydraulic pump compartment of the SK350-8 excavator. The drive shaft connects the pump to the engine, ensuring a reliable transfer of power.
Control Mechanism:
The K5V140DTP pump incorporates an advanced control mechanism that enables precise regulation of the hydraulic flow. The excavator's operator can control the pump's displacement through the machine's control system, adjusting it to match the operational requirements and achieve optimal performance.
Piston Assembly:
The pump consists of multiple axial pistons that are responsible for generating hydraulic pressure. These pistons move in a reciprocating motion, driven by the rotational force provided by the engine. The K5V140DTP pump utilizes high-quality piston assemblies to ensure durability and efficiency.
Cylinder Block and Valve Plate:
The cylinder block houses the pistons and acts as the main structure for the hydraulic fluid chambers. It provides a sealed environment for the pistons to operate smoothly. The valve plate, on the other hand, controls the flow of hydraulic fluid to and from the cylinder block, ensuring proper synchronization of the piston movements.
Swash Plate Assembly:
The K5V140DTP pump incorporates a swash plate assembly, which is responsible for adjusting the piston stroke and controlling the displacement of the pump.
By changing the inclination angle of the swash plate, the pump can vary the output flow rate to match the load requirements.
Shaft Seal and Bearings:
To prevent hydraulic fluid leakage and ensure a reliable operation, the K5V140DTP pump is equipped with high-quality shaft seals. These seals effectively seal the pump shaft against external contaminants and maintain the hydraulic fluid within the system. Additionally, the pump includes robust bearings that provide support and reduce friction between moving parts, enhancing the pump's longevity.
Cooling and Lubrication:
Efficient cooling and lubrication are crucial for maintaining the optimal performance and durability of the pump. The K5V140DTP pump incorporates cooling and lubrication systems to ensure proper temperature control and reduce wear on internal components. This enables the pump to operate reliably even under demanding working conditions.