Bucher QXV Series Internal Gear Pump | QXV46-032R | QXV31 QXV53

LIC Hydraulic proudly presents the Bucher QXV Series, the specialized solution for high-pressure applications involving low-viscosity fluids. Engineered by the pioneers of internal gear technology, the QXV series—including the widely used QXV46-032R—is built to operate where others fail. Whether driving a high-speed servo system or managing fuel-like media, the QXV pump delivers steady, pulse-free power with the precision required for modern industrial automation.

Key Technical Features

• Low Viscosity Specialist: Uniquely designed to handle fluids with viscosities as low as $1\text{–}2\text{ cSt}$, making it the first choice for testing benches and aerospace fluid management.

• Servo-Drive Compatibility: Minimal rotating mass and high dynamic response allow the QXV series to keep pace with the rapid acceleration/deceleration of servo motors.

• Hydrostatic Gap Compensation: Features axial and radial sealing zones that automatically adjust to pressure, ensuring zero-bypass performance.

• Whisper-Quiet Profile: The unique gear geometry eliminates the “trapped oil” effect, reducing operating noise by $10\text{–}15\text{ dB}$ compared to external gear pumps.

Expert Maintenance Tips

• Oil Cleanliness: To maintain the high-precision clearances of the QXV46, fluid must be filtered to ISO 4406 17/15/12 or better.

• Cavitation Prevention: Due to its high-speed capability, ensure the suction line is short and wide. QXV pumps are high-precision instruments; air bubbles in the oil can cause rapid erosion of the internal crescent.

• Rotation Check: Always verify the “R” (Clockwise) or “L” (Counter-Clockwise) designation on the nameplate. Bucher QXV pumps are not reversible and will not build pressure if rotated in the wrong direction.