Features and safety instructions of Rexroth A7VO piston pumps

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Series: Rexroth piston pump A7VO models “28, 55, 80, 107, 160, 6 series”. Operating pressure: 35 MPa; peak pressure: 40 MPa. Control methods: LR power control, DR pressure control, HD hydraulic control (related to pilot pressure), EP electrical control with proportional solenoid. Features: – Slant-axis design; axial conical piston variable pump for open-loop hydrostatic transmission. – Suitable for construction machinery and industrial applications. – The output flow rate is proportional to the speed and pump displacement; it can be adjusted continuously from maximum to zero (from qvmax to qv min = 0). – Various variable configurations are suitable for various regulating and control devices – a robust and compact bearing system with a long service life. Safety instructions: – The A7VO pump is designed for use in open circuits. - The project planning, installation, and commissioning of axial piston units must be carried out by qualified personnel. - Before using the axial piston unit, please read the corresponding instruction manual thoroughly. It can be obtained from Bosch Rexroth if necessary. - During operation and shortly after, the axial piston unit (especially the electromagnet) may pose a risk of burns. Appropriate safety measures should be taken (such as wearing protective clothing). - The characteristics of the axial piston unit can change depending on different operating conditions (operating pressure, oil temperature). - Working line oil port: · The oil port and fixing thread are designed for the maximum specified pressure. Machine or system manufacturers must ensure that the safety factors of the connecting components and pipelines meet the specified operating conditions (pressure, flow rate, hydraulic oil, temperature). · The working line oil ports and functional oil ports are used only for hydraulic lines. - Pressure cut-off valves and pressure controllers do not provide overpressure safety protection. A relief valve will be provided in the hydraulic system. - The data and instructions contained here must be followed. - This product cannot be approved as a component that adheres to the general mechanical safety concept of ISO 13849. - Use the following tightening torques: · Joints: For the tightening torque of the joints used, please refer to the manufacturer’s instructions. · Mounting bolts: For mounting bolts with ISO metric threads in accordance with DIN 13 standards and threads in accordance with ASME B1.1 standards, we recommend checking the tightening torque for each housing according to VDI 2230. · Threaded holes of the axial piston unit: The maximum allowable tightening torque MG max applies to the internal threaded holes, and this value must not be exceeded. · Locking screw: For the metal locking screw provided with the axial plunger unit, the tightening torque MV required for the locking screw shall be used.