P20 P30 P31 P75 P76 P300 Gear Pump | Single & Double Structure | Dump Truck Lift Pump

P Series High-Performance Cast Iron Gear Pumps for Dump Truck & Heavy Machinery

Product Overview: The P Series (P20, P30, P31, P75, P76, P300) is the global benchmark for durability in heavy-duty dump truck and mobile machinery hydraulic systems. Constructed with high-tensile precision cast iron, these pumps are specifically engineered to withstand the rigorous demands of frequent lifting and intense load fluctuations. This featured range includes the complete spectrum, supporting both Single Pump and Double/Tandem Pump Structures. Whether in construction sites or mining environments, the P Series delivers consistent and long-lasting hydraulic power.

Key Technical Advantages:

• Heavy-Duty Cast Iron Construction: Built with specialized high-strength cast iron, offering superior fatigue resistance and wearability compared to aluminum pumps. Rated for continuous pressures of 21-25 MPa (3000-3600 PSI).

• Flexible Tandem Structure: Available in single, double, and triple pump configurations (e.g., P31, P51, P76 series), allowing multiple independent circuits to be driven from a single power source, increasing system integration.

• Axial Pressure Compensation: Equipped with floating side plate technology that automatically adjusts clearances under load. This ensures volumetric efficiency remains above 93%, effectively minimizing internal heat generation.

• Universal Compatibility: Manufactured strictly to international standards for flanges (e.g., SAE B, SAE C) and shaft ends (splined/keyed). Provides direct “plug-and-play” replacement for major dump truck pump brands.

• Target Applications: Dump truck lift systems, refuse compactor mechanisms, loader work pumps, truck-mounted cranes, and heavy-duty power units.

Detailed Models & Parameters:

• Core Series: P20, P30, P31, P50, P51, P75, P76, P300, P315, P330, P350, P365.

• Structure Type: Single / Double / Tandem Configurable.

• Pressure Ratings: Rated at 21 MPa to 25 MPa (3000-3600 PSI).

• Displacement Specs: Covering precise specs from 16ml/rev (P20) to over 100ml/rev (P365).

• Mounting Features: Available in SAE 2-Bolt/4-Bolt flanges, supporting direct PTO mounting or drive shaft connection.