CP Series Internal Gear Pump Replacement | CP1-25 CP1-63 High-Pressure Pump

Genlu Hydraulic proudly introduces our industrial-grade CP Series internal gear pumps, engineered for high-pressure hydraulic circuits and servo-driven industrial machinery. This series is fully engineered to match global standards, providing a seamless, high-value drop-in replacement for CP-style high-pressure pumps. We specifically highlight our supply capability for precision-tuned units such as the CP1-25-P-10R, CP1-63-P-10R-36, and the versatile CP1-25/32/40 range.

As the “power heart” of fluid power systems, CP series gear pumps are renowned for “ultra-low pressure pulsation” and “elite volumetric efficiency.” Genlu guarantees 100% Drop-in Interchangeability across mounting flanges, input shaft splines, porting dimensions, and internal pressure-compensation architectures compared to original CP series assemblies. Every pump undergoes 100% full-pressure load and dynamic noise verification on our digital benches, certifying responsive, silent, and efficient flow regulation for critical industrial duty cycles.

Technical Specifications 

• Product Series: CP Series High-Pressure Internal Gear Pump

• Representative Models: CP1-25-P-10R, CP1-63-P-10R-36, CP1-25/32/40

• Nominal Operating Pressure: Up to 250 – 300 bar (Continuous Duty)

• Peak Transient Pressure: Up to 350 bar

• Displacement Range: 10 cc/rev to 100 cc/rev (CP1 series)

• Pump Architecture: Pressure-compensated internal gear design

• Drive Shaft Specification: Standard Involute Spline

• Structural Efficiency: Ultra-low pulsation with superior suction capabilities

• Compatible Hydraulic Fluids: Mineral hydraulic oils, synthetic lubricants

• Operating Speed Range: 500 – 3000 rpm

Key Technical Advantages:

• High-Pressure Axial Compensation Logic: Internal compensation plates dynamically adjust clearances under high pressure, maintaining high volumetric efficiency while minimizing friction, thereby significantly extending operational longevity.

• Ultra-Low Pulsation & Silent Performance: Geometrically optimized gear-meshing ensures exceptionally smooth fluid output. The design minimizes vibration and noise even during high-pressure holding cycles, improving workplace conditions for heavy machinery.

• Heavy-Duty Bearing Infrastructure: The rotating group is supported by high-wear-resistant bearings, providing robust immunity to pressure shocks. This ensures consistent pressure output precision even in 24/7 high-cycle industrial production.

• Dynamic Servo-Response: CP series pumps provide excellent dynamic performance, allowing for precision P-Q (Pressure-Flow) follow-up control when paired with servo-motors, meeting strict modern efficiency standards.

Application Areas:

• Servo Injection & Die-Casting Machines: Primary power source for closed-loop servo-hydraulic systems.

• Industrial Automation Presses: High-stroke, high-pressure industrial hydraulic circuits.

• Hydraulic Test Benches: Applications requiring high-stability, low-pulsation flow characteristics.

Expert Maintenance Tips:

• Prevent Cavitation at the Inlet: CP series pumps demand laminar inlet flow. Ensure that inlet piping is properly sized without restrictive bottlenecks, as cavitation can instantly scar gear-tips and lead to systemic pressure failure. Periodically check inlet filter differential pressure.

• Enforce Strict Contamination Standards: Maintain system filtration at ISO 4406 18/16/13. Particulate ingress will instantly score gear surfaces, resulting in permanent volumetric efficiency degradation.

• Perform Initial Priming: Manually fill the pump housing with clean hydraulic fluid through the highest drain port before mounting. Operate under no-load conditions for 10 minutes to purge system air; aeration is the primary cause of high-pressure pitting and must be strictly avoided.