Type: It is a hydraulic piston pump specifically designed for use in the boom system of truck-mounted concrete pumps. This pump plays a crucial role in providing the necessary hydraulic power to operate the boom, enabling its smooth movement and precise positioning for concrete placement.
2. Displacement
The nominal displacement of the A7VO55 pump is approximately 55 cm³ per revolution. This displacement value determines the volume of hydraulic fluid it can deliver in each complete rotation, which directly influences the speed and force of the boom's movement.
3. Pressure Ratings
Rated Pressure: The pump typically has a rated working pressure in the range of around 30 - 35 MPa (megapascals). This is the maximum continuous pressure that the pump can handle under normal operating conditions to ensure reliable and efficient performance in the concrete pump's boom system.
Peak Pressure: In addition to the rated pressure, it can withstand a peak pressure for short durations during transient operations or sudden load changes. The peak pressure is usually around 38 - 42 MPa.
4. Speed Range
Minimum Speed: The pump has a minimum operating speed, which is usually set to ensure proper lubrication and priming of its internal components. This can be around 500 - 800 revolutions per minute (rpm).
Maximum Speed: The maximum speed at which the pump can operate effectively is generally in the range of 1800 - 2500 rpm. Operating within this speed range allows for optimal fluid delivery and efficient functioning of the boom system.
