
Model: PSVD2 - 17E
Application: Specifically designed as the hydraulic main pump for the EX55 excavator. This pump is responsible for generating the hydraulic power necessary to operate various functions of the excavator, including boom extension and retraction, arm movement, and bucket rotation.
2. Performance Specifications
2.1 Displacement
The displacement of the PSVD2 - 17E is 17 cc/rev. This value indicates the volume of hydraulic fluid the pump displaces in one complete revolution of its internal components. A relatively small displacement like this can still provide sufficient power for the smaller - scale operations of the EX55 excavator, allowing for precise control of its hydraulic functions.
2.2 Rated Pressure
The rated pressure of the pump is [X] bar. This is the pressure at which the pump can operate continuously under normal working conditions. It ensures reliable and efficient performance when the excavator is performing typical tasks such as digging in normal soil conditions or lifting moderate - weight loads.
2.3 Maximum Pressure
The pump can withstand a maximum pressure of [X + ΔX] bar for short - term peak loads. This extra pressure capacity is crucial for handling sudden increases in load, such as when the excavator encounters hard obstacles during digging or when performing emergency maneuvers.
2.4 Flow Rate
At a rated rotational speed of [N] rpm, the flow rate (Q) of the PSVD2 - 17E can be calculated using the formula Q = Displacement × (Rotational Speed / 1000). So, Q = 17×(N / 1000) = 0.017N liters per minute. The flow rate determines the speed at which the hydraulic actuators in the excavator can move, influencing the overall speed and productivity of the excavator's operations.