AZPGGF-11-032/032/005LDC202020MB Rexroth Gear Pump 250Bar

Product Overview

The AZPGGF-11-032/032/005LDC202020MB is a high-performance, high-pressure triple external gear pump engineered for heavy-duty industrial and mobile machinery. Deeply integrating the proven technology of the Rexroth AZPG (Group 3) and AZPF (Group 2) platforms, this unit delivers three independent hydraulic fluid flows driven by a single shaft. Positioned as a premium solution for industrial B2B clients, its core competitive advantage lies in 100% Absolute Interchangeability. Customers can seamlessly replace costly OEM Bosch Rexroth pumps without modifying flanges, shafts, or existing piping. To back our commitment to uncompromising reliability, every single multiple pump undergoes 100% simulated load testing on automated test rigs before leaving the factory. This guarantees leak-free, low-pulsation, and stable hydraulic power under continuous high-pressure operations, ultimately minimizing machine downtime and optimizing procurement budgets.

Technical Specifications 

• Model Code: AZPGGF-11-032/032/005LDC202020MB (Triple External Gear Pump)

• OEM Compatibility: 100% drop-in replacement for Bosch Rexroth genuine parts

• Displacement Configuration: Section 1: 32.0 cc/rev (AZPG); Section 2: 32.0 cc/rev (AZPG); Section 3: 5.0 cc/rev (AZPF)

• Rated Working Pressure: 250 bar (3,600 psi)

• Peak Intermittent Pressure: 280 bar (4,000 psi)

• Speed Range: 500 rpm to 3,000 rpm

• Direction of Rotation: L (Counter-clockwise, viewed from the drive shaft)

• Control Method: Fixed displacement, open-loop circuit supply

• Flange & Port Standards: DIN / European standard square flange with flanged ports (Code 20)

• Seal Material: NBR Nitrile Rubber (Code M, compatible with standard mineral-based hydraulic fluids)

• Housing Material: High-strength extruded aluminum alloy body with precision-cast iron end covers

Key Technical Advantages

• Efficient Multi-Circuit Supply & Compact Footprint: This triple pump ingeniously integrates two large-displacement (32cc) main circuits and one small-displacement (5cc) pilot/auxiliary circuit into a single assembly. Driving three independent systems via one shaft drastically simplifies system piping and saves highly valuable installation space.

• Seamless Drop-in Replacement: Manufactured with strict adherence to OEM tolerance parameters for mounting flanges, port dimensions, and involute splined shafts. During machine overhauls or aftermarket maintenance, clients can achieve a flawless direct installation without the need for adapter kits or system modifications.

• Dynamic Axial Clearance Compensation: The advanced floating thrust plate design utilizes the system’s discharge pressure to dynamically seal against the gear faces. Even under continuous 250 bar loads, this minimizes internal leakage, keeps fluid temperature rise in check, and sustains a high volumetric efficiency of over 95%.

• Rigorous 100% Simulated Load Testing: We reject random batch sampling. Every triple pump dispatched is subjected to rigorous automated testing, including full rated pressure loads, peak pressure shocks, and high-RPM thermal cycles. This completely eradicates out-of-box failures and guarantees battle-ready performance for extreme operational environments.

Application Areas

Due to its robust triple-flow capability, the AZPGGF-11 is perfectly tailored for complex machinery requiring simultaneous operation of multiple actuators:

• Heavy Mobile Machinery: Large crawler excavators (main systems + pilot control), skid steer loaders, and heavy forestry harvesters.

• Industrial Automation: Die-casting machines, heavy-duty CNC hydraulic stations, and multi-station Hydraulic Power Units (HPUs).

• Specialized Vehicles: Multi-way hydraulic distribution systems on sanitation trucks and winch/luffing circuits on mobile cranes.

Expert Maintenance Tips

• Critical Anti-Cavitation Startup: Triple pumps demand a massive fluid intake. Upon first installation or fluid replacement, you must pre-fill the pump housing with clean hydraulic fluid and jog the prime mover multiple times to bleed air from the lines. Starting directly under load without bleeding will cause instantaneous cavitation, leading to catastrophic wear on bearings and thrust plates.

• Strict Intake Velocity Control: Given the total displacement of 69 cc/rev, system designers and maintenance crews must ensure the suction line is adequately sized to maintain a fluid velocity between 1.2 and 1.5 m/s. The reservoir suction strainer must also possess ultra-high flow capacity to prevent starvation.

• Shaft Alignment Tolerance: Despite the reinforced main drive shaft, the concentricity between the pump shaft and the prime mover (motor/engine) flywheel must be aligned to within a strict 0.1mm tolerance. Excess radial misalignment will inevitably lead to premature shaft seal leaks or metal fatigue failure.