The specific displacement value for the 208-1149 (2081149) hydraulic main pump is not directly given by the part numbers. For smaller excavators like the Caterpillar E303 and E304, which still require sufficient hydraulic power for functions such as arm movement, bucket operation, and rotation, 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 Caterpillar's official product documentation.
Operating Pressure
Rated Pressure: The rated pressure of this pump is typically around 250 - 300 bar (25 - 30 MPa). This pressure rating enables the pump to effectively drive the hydraulic actuators in the E303 and E304 excavators, ensuring smooth operation of functions like digging, lifting light to moderate loads, and maneuvering.
Maximum Pressure: The maximum pressure that the pump can withstand for short periods is usually higher than the rated pressure, often reaching up to 350 bar (35 MPa) or more. This additional pressure capacity allows the pump to handle sudden high-load situations that may occur during the operation of the excavators, such as when working in slightly tougher soil conditions.
