Parameter Description of YUKEN Piston Pump A10-FR07CS-12

1. Model Code Explanation

• A10: Series identifier, representing the A-series variable displacement piston pump with a basic displacement specification of 9.8 cm³/rev (small-displacement type for light-duty applications).
• F: Mounting type, indicating flange mounting (standard light-duty flange configuration, suitable for small-scale equipment installation).
• R: Rotation direction, meaning clockwise rotation when viewed from the shaft end (standard rotation direction for YUKEN A-series small-displacement pumps).
• 07CS: Control type, referring to manual variable control with pressure relief protection, which realizes stepless adjustment of displacement through manual operation and has built-in pressure relief function to protect the pump body.
• 12: Standard design number, corresponding to the standard configuration of the pump, matching the light-duty industrial application requirements and ensuring good compatibility with small hydraulic systems.

2. Core Technical Parameters

3. Control and Adjustment Parameters

• Control Mode: Manual variable control with pressure relief protection (Model 07CS), which can manually adjust the displacement through the adjustment handle, and the built-in pressure relief valve can automatically release pressure when the system pressure exceeds the set value to protect the pump and system.
• Pressure Adjustment: The pressure relief valve is adjustable, with an adjustable pressure range of 1.2-16 MPa; turning the pressure relief adjustment screw clockwise increases the relief pressure, and the adjustment accuracy is ±0.4 MPa.
• Flow Adjustment: Rotate the manual displacement adjustment handle clockwise to decrease the flow, and counterclockwise to increase the flow; the minimum adjustable flow is 0.8 cm³/rev, which can flexibly adapt to the flow demand of small hydraulic systems.

4. Installation and Piping Requirements

• Mounting Type: Flange mounting (Model F), the mounting surface should be kept flat and clean; it is recommended to use a thin shock-absorbing gasket to reduce vibration during the pump’s light-duty high-speed operation.
• Shaft Alignment: It is recommended to use a small-sized flexible coupling to avoid bending or thrust stress on the shaft; the maximum permissible misalignment is less than 0.08 mm TIR, and the maximum permissible misangular is less than 0.2°.
• Piping Specifications: The inner diameter of the suction port pipe should be not less than 10 mm (3/8 inch) to ensure smooth oil suction; the length of the drain pipe should be less than 0.8 m, and the pipe end should be submerged in oil; the pressure in the pump housing should be maintained at a normal pressure of less than 0.1 MPa and a surge pressure of less than 0.5 MPa.

5. Application Notes