Product Overview

The BUCHER HYDRAULICS QX31-020R97 (Material Number: 022539400) is a high-precision internal gear pump engineered for demanding industrial hydraulic systems. Manufactured by Bucher Hydraulics, a global leader in hydraulic drive and control technology, this unit operates on the proven internal gear principle, utilizing a rotating inner gear and a stationary outer ring gear to create a sealed displacement volume. This design is renowned for delivering exceptionally smooth, low-pulsation flow, making it an ideal choice for applications requiring precise volumetric control and quiet operation. The QX series is a direct-fit replacement for original equipment, ensuring seamless integration into existing hydraulic power units, lubrication systems, and industrial machinery.

Technical Specifications

ParameterSpecification / Feature
Component TypeInternal Gear Pump
Model DesignationQX31-020R97 / 022539400
Operating PressureStandard Industrial Grade (Up to 250 bar continuous, 280 bar peak)
Mounting & ConnectionStandard ISO 4-Hole Flange / Manufacturer Interface
Displacement20 cm³/rev (Nominal)
Rotation DirectionClockwise (Standard)

Engineering Features & Advantages

  • Precision Performance: The internal gear design ensures low pulsation and minimal noise emission, providing a stable and consistent flow rate essential for precision hydraulic circuits and sensitive lubrication applications.
  • Industrial Reliability: Built for continuous operation under severe industrial conditions, featuring high-quality bearing materials and a robust casing that withstands high pressure and thermal loads.
  • Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, allowing for quick drop-in replacement without the need for system modifications or adapter plates.
  • High Suction Performance: The geometry of the internal gear set provides excellent suction characteristics, preventing cavitation even at high speeds and with viscous fluids.

Typical Industrial Applications

This internal gear pump is widely utilized in heavy industrial scenarios including plastic injection molding machines, metallurgical presses, construction and marine hydraulics, CNC machine tools, and centralized lubrication systems where reliable, low-noise fluid delivery is critical.

PRODUCT IMAGES

BUCHER HYDRAULICS QX31-020R97 / 022539400
BUCHER HYDRAULICS QX31-020R97 / 022539400
BUCHER HYDRAULICS QX31-020R97 / 022539400
BUCHER HYDRAULICS QX31-020R97 / 022539400

BUCHER HYDRAULICS QX31-020R97 / 022539400 Internal Gear Pump

⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:

  • Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
  • Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
  • Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
  • Peace of Mind: Covered by our 12-Month Replacement Warranty.

Shop the genuine BUCHER HYDRAULICS QX31-020R97 / 022539400 Solenoid Directional Seat Valve. This Germany-made 24V DC hydraulic component features a poppet-type design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.

Tested Genuine Surplus / OEM Hydraulic Component
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Tested Genuine Surplus / OEM Hydraulic Component
WhatsApp RFQ Fast Quote