Model Identification: The Ex120 - 1 Hydraulic Pump is designed for a specific excavator model, likely the EX120 - 1. It plays a vital role in the hydraulic system of the excavator, providing the necessary hydraulic power to operate various components such as the boom, arm, and bucket.
Performance Specifications
Flow Rate
Variable Flow: The pump usually offers a variable flow rate to meet different operational demands of the excavator. The minimum flow rate can be adjusted to a relatively low value, perhaps around 0 - 20 liters per minute (L/min), depending on the control settings. The maximum flow rate is typically in the range of 100 - 200 L/min. This allows for precise control of the speed and force of the hydraulic actuators.
Flow Control Precision: The pump is engineered to provide accurate flow rate control. The adjustment mechanism enables fine - tuning of the flow, with an accuracy of usually within a few percent of the set value. This precision is crucial for delicate operations such as precise digging or leveling.
Pressure Ratings
Rated Pressure: It has a rated working pressure, which is generally in the range of 200 - 300 bars (2900 - 4350 psi). This pressure level is sufficient to power the hydraulic cylinders and motors that drive the excavator's working parts, enabling them to exert the required force.
Peak Pressure Tolerance: In addition to the rated pressure, the pump can withstand peak pressures for short - term surges. The peak pressure is typically higher than the rated pressure and may be around 350 - 400 bars (5075 - 5800 psi), depending on the pump's design and construction.
Speed Specifications
Operating Speed Range: The hydraulic pump has an operating speed range measured in revolutions per minute (rpm). The minimum operating speed is usually around 600 - 1000 rpm to ensure proper lubrication and smooth operation of the internal components. The maximum speed can reach up to 3000 - 3500 rpm, depending on the specific requirements of the hydraulic system and the excavator's engine power.
