Rated Pressure: The rated pressure of the hydraulic pump is usually around 320 - 380 bar (32 - 38 MPa). This pressure rating is crucial for driving the multiple and powerful hydraulic actuators in these excavators, ensuring smooth and forceful operation of functions like moving the large boom, arm, and bucket, as well as operating additional heavy-duty attachments.
Maximum Pressure: The maximum pressure that the pump can withstand for short periods is often higher than the rated pressure, reaching up to 420 bar (42 MPa) or more. This additional pressure capacity allows the pump to handle sudden extreme high-load situations that may occur during the excavators' operation, such as when breaking through hard rock formations or in large-scale excavation projects.
