HGP Series Hydraulic Gear Pump Replacement | HGP-1A/2A/3A High-Pressure Gear Pump

Genlu Hydraulic proudly introduces our industrial-grade HGP Series hydraulic gear pumps. Fully engineered to match global standards, this series provides a seamless, high-value drop-in replacement for standard HGP hydraulic systems. We specifically highlight our supply capability for the full HGP-1A, 2A, and 3A range, including the complete code series from F9R to F25R.

HGP gear pumps are the industry benchmark for reliability, featuring simple architecture, superior suction capabilities, and high tolerance for fluid contamination. Genlu guarantees 100% Drop-in Interchangeability across mounting flanges, shaft dimensions, port configurations, and performance curves compared to standard HGP Series assemblies. Every pump undergoes 100% full-load and volumetric-efficiency verification on our digital test benches, certifying rugged, consistent performance for your hydraulic circuits.

Technical Specifications 

• Product Series: HGP Series High-Performance Gear Pump

• Representative Models: HGP-1A, HGP-2A, HGP-3A (Including F9R, F11R, F12R, F13R, F14R, F17R, F19R, F23R, F25R)

• Displacement Range: 1.0 cc/rev to 50 cc/rev

• Nominal Operating Pressure: 140 – 210 bar

• Peak Transient Pressure: Up to 250 bar

• Max Rated Speed: 1500 – 3000 rpm

• Port Connections: Flanged / Threaded

• Shaft Options: Keyed / Splined / Conical

Key Technical Advantages:

• Precision Gear-Meshing Technology: High-strength alloy steel gears, processed via precision hobbing and grinding, significantly reduce pressure pulsation and noise while ensuring steady, reliable flow delivery.

• Automatic Pressure Compensation: Integrated pressure-balancing side plates adjust axial clearance dynamically, maximizing volumetric efficiency at high pressures and maintaining peak performance under thermal stress.

• Superior Wear Resistance: High-quality shaft seals and reinforced aluminum alloy housings provide elite resilience against mechanical shock and high-pressure loads, extending total pump service life.

• Installation Flexibility: Fully compatible with standard equipment footprints and supports tandem (multiple-pump) configurations, ideal for compact, complex hydraulic layout requirements.

Application Areas:

• Industrial Machinery: Feed and lubrication power for grinders, milling machines, and saws.

• Mobile Machinery: Hydraulic power for compact forklifts, aerial work platforms, and small loaders.

• Agricultural Equipment: Hydraulic power units for tractors and implement lift/manipulation systems.

Expert Maintenance Tips:

• Strict Filtration Requirements: Gear pumps are highly sensitive to debris. Utilize a 25μm or finer intake filter. Avoid using aged or degraded hydraulic fluid to prevent rapid gear-surface wear.

• Avoid Dry Operation: Never start the pump dry. Pre-fill the pump through the suction port during installation and cycle at low pressure without load to purge air from the circuit before ramping up.

• Ensure Proper Alignment: When mounting couplings, ensure shaft misalignment is within 0.05mm. Excessive radial side-loading on the pump shaft is the primary cause of premature bearing failure and leakage.