Marzocchi ALP Series Gear Pump | ALP2-D-13 ALP2A-D-25 | ALP1A ALP2A Pump
| Model Number | ALP2A-D-50-FG, ALP2A-D-25-FG, APL1A-D-9-FG, ALP2-D-20-EP, ALP2A-D-16, ALP2-D13 |
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Product Description
The Marzocchi ALP Series from LIC Hydraulic is a benchmark for high-performance aluminum gear pumps. Covering the ALP1A, ALP2, and ALP2A series, these pumps feature high-strength extruded aluminum bodies and advanced bearing support for maximum power density. Designed for applications where efficiency and noise control are paramount, models like ALP2-D-13 and ALP2A-D-50-FG deliver continuous pressures up to $250\text{ bar}$. We guarantee 100% mechanical interchangeability and perform 100% volumetric efficiency and dynamic load testing on every unit.
Technical Specifications (Bulleted List)
Series: ALP1, ALP2, ALP1A, ALP2A
Key Displacements: From $1.4\text{ cc/rev}$ to $35.2\text{ cc/rev}$ (e.g., ALP2-D-25)
Pressure Rating: Continuous $250\text{ bar}$ / Intermittent $280\text{ bar}$ / Peak $300\text{ bar}$
Max Speed: Up to $4000\text{ RPM}$ (depending on size)
Shaft/Flange: Available in SAE, European standard, and FG configurations
Rotation: D (Clockwise) or S (Counter-clockwise)
Seal Options: Standard NBR, Viton, or EP (Ethylene Propylene)
Key Technical Advantages
Precision Gear Profile: The ALP series uses high-precision ground gears to minimize ripple and vibration. This results in ultra-quiet operation, even at high operating pressures.
Axial Pressure Compensation: Integrated pressure-balanced thrust plates automatically adjust clearances based on operational load. This maintains a volumetric efficiency of over $98\%$, reducing internal heat generation.
High-Strength Aluminum Housing: The specialized aluminum alloy provides excellent thermal conductivity and fatigue resistance, ensuring the pump maintains its tight tolerances under varying temperature cycles.
Compact Modular Design: Offers a wide range of mounting flanges and shaft extensions, making the ALP series highly adaptable for industrial power units and mobile equipment.
Application Areas
Material Handling: Lift systems for electric forklifts and pallet jacks.
Industrial HPU: Hydraulic power sources for CNC machines and automated test stands.
Agriculture: Steering systems for tractors and drive circuits for small harvesters.
Mobile Platforms: Aerial work platforms and compact construction machinery.
Expert Maintenance Tips
Rotation Direction: The letter “D” indicates clockwise rotation. Always verify the motor drive direction before installation. Incorrect rotation will cause immediate shaft seal failure.
EP Seal Compatibility: Models with the “EP” suffix are designed for specific fluids. Verify fluid compatibility to prevent seal swelling or degradation.
Avoid Cavitation: Aluminum gear pumps are highly sensitive to suction issues. Ensure the suction line is perfectly sealed and the inlet pressure remains within the recommended $0.8\text{–}2.2\text{ bar}$ absolute range to prevent internal pitting.
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