HPLPA High Pressure Gear Pump | HPLPA114 HPLPA131 HPLPA148 HPLPA180 | HPLPA114DDDG3G3B00

LIC Hydraulic’s HPLPA Series high-pressure external gear pumps are the definitive solution for hydraulic systems requiring high power density and lightweight construction. Covering displacements from HPLPA114 to HPLPA180, this series is a 100% Drop-in Interchangeable replacement for models like HPLPA114DDDG3G3B00. Engineered with a high-strength extruded aluminum body and pressure-balanced floating bushings, the HPLPA series delivers consistent flow under continuous high-pressure cycles. Each pump undergoes 100% factory load testing to guarantee peak performance in the most demanding agricultural, construction, and industrial power unit applications.

Technical Specifications (Bulleted List)

• Series Model: HPLPA (High Pressure Light-weight Series)

• Specific Model: HPLPA114DDDG3G3B00

• Displacement Range: 14.0 cm³/rev (114) to 80.0 cm³/rev (Configuration dependent)

• Nominal Pressure: 250 bar (25 MPa / 3625 PSI)

• Peak Pressure: 280 bar (28 MPa / 4060 PSI)

• Maximum Speed: Up to 3000 RPM

• Housing Material: High-tensile anti-fatigue extruded aluminum

• Shaft Type: G3 (Standard SAE Splined or Straight Keyed)

• Mounting Flange: European or SAE standard patterns

• Volumetric Efficiency: ≥ 95%

Key Technical Advantages

• Axial Pressure Compensation: Features floating thrust plates that automatically compensate for axial clearance using internal pressure. This ensures minimal internal leakage and maintains a volumetric efficiency above 95% even at 250 bar.

• High-Capacity DU Bushings: Equipped with premium DU composite bushings that offer excellent self-lubricating properties and shock resistance, effectively supporting the gear shafts and extending service intervals.

• Precision-Ground Gear Geometry: The gear sets are micro-finished to reduce trapped fluid volume and flow pulsations, resulting in smooth operation and significantly lower decibel levels.

• Tandem Capability: The HPLPA architecture supports multiple-section mounting. Configurations like the DDDG allow for single-shaft driving of multiple independent circuits, optimizing machine space.

Application Areas

• Agricultural Machinery: Tractor lift systems, seeder drives, and harvester steering circuits.

• Mobile Equipment: Forklift main pumps, compact roller propulsion, and sweeper hydraulic systems.

• Industrial Units: Compact Hydraulic Power Units (HPUs) and metal-working auxiliary circuits.

Expert Maintenance Tips

• Rotation Check: Verify the rotation direction (CW/CCW) as specified by the model code before startup. Incorrect rotation will immediately blow out the shaft seal.

• Suction Integrity: Aluminum pumps are highly susceptible to cavitation. Ensure the suction line is airtight and the inlet filter is clean to prevent internal pitting and erosion.

• Temperature Management: Maintain hydraulic fluid temperatures between 30°C and 60°C (86°F – 140°F). Excessive heat can cause uneven expansion in the aluminum body, reducing efficiency and increasing wear.