The pump has a fixed displacement of 63 cm³/rev. This indicates the volume of hydraulic fluid displaced per revolution of the pump's drive shaft. A larger displacement generally means a higher flow rate at a given rotational speed, which is crucial for powering the various hydraulic functions of an excavator, such as boom, arm, and bucket movements.
Rated Pressure
The rated pressure is typically 350 bar. This is the maximum continuous pressure at which the pump can operate while maintaining reliable performance and the specified flow rate. In an excavator, this high - pressure capability is essential for performing tasks that require significant force, like digging into hard soil or lifting heavy loads.
Maximum Pressure
It can withstand a maximum pressure of up to 400 bar for short durations. This peak - pressure rating allows the pump to handle sudden load spikes or high - demand situations during excavator operation without immediate damage, although extended operation at this pressure may reduce the pump's lifespan.
Rated Speed
The rated speed is around 1800 rpm. Operating the pump at this speed ensures optimal performance in terms of flow rate, pressure generation, and mechanical efficiency. Deviating significantly from this speed may lead to decreased performance, increased wear, or potential damage to the pump components.
Flow Rate
At the rated speed of 1800 rpm, the theoretical flow rate is calculated as displacement × rated speed / 1000. So, for the A10VO63 pump, the theoretical flow rate is 63×1800÷1000 = 113.4 L/min. However, the actual flow rate may be slightly lower due to internal leakage and other factors, typically around 95 - 98% of the theoretical value.
