Parameter Description of YUKEN Piston Pump A37-FR01CK-32

1. Model Interpretation

• A37: Series identifier, indicating the pump belongs to YUKEN A37 series piston pumps
• F: Installation and structural feature
• R: Control type related identifier
• 01: Control mode code, corresponding to pressure compensator control
• C: Pressure adjustment range code
• K: Additional configuration identifier
• 32: Design standard identifier (American design standard)

2. Core Technical Parameters

• Displacement: 36.9 cm³/rev (equivalent to SAE 37cc)superscript:5superscript:6]
• Maximum Operating Pressure: Up to 28 MPa (4,060 psi)
• Pressure Adjustment Range: 1.2 – 16 MPa (174 – 2320 psi)superscript:6]
• Rotation Direction: Clockwise (CW)superscript:4]
• Shaft Type: Keyed shaftsuperscript:4]
• Port Location: Axial port
• Mounting Type: Flange mount
• Weight: 62.00 lbs (approx. 28.12 kg)

3. Suction & Drainage Parameters

• Permissible Suction Pressure: -16.7 ~ +50 kPa
• Drainage Pressure Requirement: Normal pressure ≤ 0.1 MPa; Surge pressure ≤ 0.5 MPa
• Recommended Suction Pipe Inner Diameter: ≥ 16 mm (3/4 inch)

4. Control & Adjustment

• Control Type: Pressure compensator controlsuperscript:4]
• Pressure Adjustment: Turning the pressure adjustment screw clockwise increases the pressure; each full turn adjusts the pressure by 6.5 MPa (for A37 series with code “C”)
• Flow Adjustment: Turning the flow adjustment screw clockwise decreases the delivery flow; the minimum adjustable flow is 10 cm³/rev, and each full turn of the adjustment screw changes the flow by 2.9 cm³/rev.

5. Installation Notes

• Use a flexible coupling to avoid bending or thrust stress on the shaft; maximum permissible misalignment ≤ 0.1 mm TIR, maximum permissible misangular ≤ 0.2°.
• The length of the drain pipe should be less than 1 m, and the pipe end should be submerged in oil.
• When using steel pipes for suction or discharge ports, avoid excessive load from the piping to prevent excessive noise.
• The pump is preset to maximum delivery and minimum discharge pressure at the time of shipment; adjust according to system requirements.