YB Series Double High Pressure Vane Pump | YB-C/E/D Series Replacement

Genlu Hydraulic proudly introduces our YB Series high-pressure double vane pumps. Engineered for high-pressure hydraulic applications, this series is renowned for its efficiency, compact architecture, and superior pressure compensation. The YB series comprehensively covers YB-C, YB-D, and YB-E specifications, and ensures perfect compatibility for complex configurations like the YB-C/E200/125, YB-D355, and YB-C/E125/63. Genlu unequivocally guarantees 100% Drop-in Interchangeability in mounting flanges, spline drive shafts, dual-port layouts, and pressure handling relative to original standards. Backed by our uncompromising 100% Simulation Load Testing, each unit is validated for volumetric efficiency, pressure-balance stability, and sealing integrity before dispatch, ensuring relentless and efficient flow support for your industrial presses, injection molding machines, and heavy-duty hydraulic stations.

Technical Specifications 

• Product Series: YB Series High-Pressure Double Vane Pump

• Representative Models: YB-C/E200/125, YB-D355, YB-C/E125/63

• Rated Operating Pressure: 16 – 21 MPa (High-pressure spec)

• Rated Speed: 1450 – 1500 rpm

• Structural Configuration: Double-vane architecture (combinations of different cartridges)

• Rotation: Right-hand (Standard) or Left-hand (Optional)

• Fluid Compatibility: Mineral hydraulic oil, 25-68 cSt recommended

Key Technical Advantages:

• Optimized Stator Geometry: Features non-circular stator curves that minimize impact and friction between the vanes and stator. This drastically reduces vibration and noise, significantly extending the service life of the pump cartridge.

• Pressure-Balance Technology: Our unique floating port-plate structure automatically adjusts axial clearance based on system pressure, maintaining peak volumetric efficiency even at 21 MPa, thus minimizing internal leakage.

• Flexible Modular Configuration: The YB series supports free combinations of C/D/E displacement cartridges. Users can precisely match front and rear pump displacements to drive multi-circuit systems from a single power source, saving valuable equipment footprint.

• High-Hardness Wear-Resistant Materials: Critical components (vanes, rotors, stators) are manufactured from high-performance specialty alloy steel and undergo vacuum heat treatment. This provides exceptional surface wear resistance, maintaining stable output even under fluctuating fluid cleanliness conditions.

Application Areas:

• Industrial Presses: Primary power circulation for forging presses and hydraulic shears.

• Injection Molding Machines: Oil supply for mold clamping and injection sequences.

• Machine Tool Auxiliary Systems: Coolant circulation or hydraulic power units for machining centers.

• Metallurgical Equipment: Fluid power supply for auxiliary hydraulic systems.

Expert Maintenance Tips:

• Suction Environment Optimization: Vane pumps are highly sensitive to suction resistance. Keep the suction line as short and wide as possible. Avoid installing filters at the suction port (unless specifically designed as suction-rated), as this leads to cavitation that destroys the pump cartridge.

• Start-up Purging: After initial installation, ensure the pump housing is primed with hydraulic oil. Run the system at low pressure for a short period to purge trapped air until the operational sound is crisp and quiet to prevent dry-start friction.

• Fluid Cleanliness Management: As these pumps rely on precision clearances, perform regular checks on oil viscosity and cleanliness (ISO 4406 18/16/13). Replace degraded or contaminated oil containing metal particulates to extend the service life of your pump by over 50%.