The specific displacement value for the 708-3S-00522 hydraulic main pump is not directly indicated by the part number. Given that the PC40MR-2 and PC50MR-2 are relatively small-sized excavators, the displacement is likely to be in the range of 30 - 60 cubic centimeters per revolution (cm³/rev). However, the exact displacement should be obtained from Komatsu's official product documentation.
Operating Pressure
Rated Pressure: The rated pressure of this pump is typically around 200 - 250 bar (20 - 25 MPa). This pressure rating is sufficient for driving the hydraulic actuators in the PC40MR-2 and PC50MR-2 excavators, ensuring smooth operation of functions such as arm movement, bucket operation, and machine rotation.
Maximum Pressure: The maximum pressure that the pump can withstand for short periods is usually higher than the rated pressure, often reaching up to 300 bar (30 MPa) or more. This additional pressure capacity allows the pump to handle sudden high-load situations that may occur during the excavators' operation, such as when working in slightly tougher soil conditions.
