Product Overview
The AZPFFF-12-016/011/005LRR121212PB (Order No. 0510665448) is a triple external gear pump from Bosch Rexroth’s AZPF High Performance Platform F series. This fixed-displacement external gear pump integrates three independent gear sections in a single housing, delivering three independent hydraulic outputs from a single drive shaft input.
This unit belongs to the AZPF Platform F series and features a 12-tooth gear profile that minimizes flow pulsation and noise emission. The three sections offer displacements of 16 cm³/rev, 11 cm³/rev, and 5 cm³/rev respectively, with a total combined displacement of 32 cm³/rev.
Key Interchangeability Advantage: Our AZPFFF series triple gear pumps are manufactured to strict Bosch Rexroth original design specifications, ensuring 100% direct interchangeability with original units. All mounting interfaces, flange dimensions, shaft configurations, and port positions are identical to the original product—no modifications required. Every pump undergoes 100% factory performance testing under simulated operating conditions (covering rated pressure, peak pressure, and full speed range performance curves for each pump stage), guaranteeing plug-and-play reliability with zero performance deviation.
Model Code Breakdown (based on Bosch Rexroth AZPF Series designation rules):
Series: AZPFFF = Triple external gear pump (AZP + FFF = triple pump)
Platform/Size: 12 = Platform F, size code 12
Stage I Displacement: 016 = 16.0 cm³/rev
Stage II Displacement: 011 = 11.0 cm³/rev
Stage III Displacement: 005 = 5.0 cm³/rev
Rotation: L = Counter-clockwise (viewed from drive shaft end)
Shaft/Flange/Port Code: RR121212 = Specific shaft, flange, and port configuration
Seal/Suffix: PB = Specific sealing material and suffix configuration
Technical Specifications
AZPFFF-12-016/011/005LRR121212PB (0510665448)
Product Series: AZPF Platform F Series High Performance External Gear Pump
Pump Type: Triple Gear Pump, three independent gear sections in series
Stage I Displacement: 16.0 cm³/rev
Stage II Displacement: 11.0 cm³/rev
Stage III Displacement: 5.0 cm³/rev
Total Combined Displacement: 32.0 cm³/rev
Rated Continuous Operating Pressure: Up to 250 bar
Series Peak Pressure: Up to 280 bar (intermittent)
Maximum Speed: Up to 3000 rpm
Gear Teeth: 12-tooth gear profile with optimized flow metering
Direction of Rotation: Counter-clockwise (L) (viewed from drive shaft end)
Bearing Type: Slide bearings, suitable for heavy-duty applications
Body Material: High-strength aluminum alloy
Seals: NBR (Nitrile Butadiene Rubber)
Mounting Flange: SAE J744 standard (82.55 mm pilot)
Drive Shaft: Splined shaft (SAE J744 standard)
Port Connections: SAE O-Ring Boss flanged ports
Operating Temperature Range: -10°C to +80°C (NBR seals)
Recommended Fluid: HLP mineral hydraulic oil (DIN 51524)
Recommended Fluid Viscosity: 12 – 800 mm²/s
Filtration Requirement: ISO 4406 cleanliness class 18/17/14 or better
Weight: Approx. 5.2 – 6.5 kg (configuration-dependent)
Key Technical Advantages
1. Triple-Section Integrated Design for Three Independent Outputs
The AZPFFF series integrates three independent gear sections in a single housing, delivering three independent hydraulic outputs from a single drive shaft input. This design dramatically simplifies piping layout in complex hydraulic systems, reduces external connection points and leakage risks, and saves valuable installation space.
2. 12-Tooth Gear with Optimized Flow Metering for Ultra-Low Noise
AZPF Platform F series gears feature a 12-tooth gear profile combined with optimized flow metering, effectively minimizing flow pulsation and pressure fluctuation. The low-noise characteristic significantly improves operator working conditions and reduces vibration interference with surrounding equipment.
3. Pressure-Balanced Design + Slide Bearings for High Volumetric Efficiency and Long Service Life
The pressure-balanced design ensures automatic hydraulic clearance compensation between gears and housing under all operating conditions, significantly improving volumetric efficiency. Slide bearings are designed for heavy-duty applications, providing superior wear resistance and long-term reliability.
4. Flexible Multi-Stage Pressure Configuration Capability
Each pump stage can be independently configured for different operating pressures based on system requirements. Taking the AZPFF-12-016/016 dual pump as an example, Stage I withstands 280 bar intermittent pressure while Stage II is rated for 230 bar, allowing designers to assign pressure zones appropriately across different circuits. This multi-stage pressure capability offers exceptional design flexibility for complex hydraulic systems.
5. Compact Lightweight Aluminum Construction for High Power Density
The high-strength aluminum housing delivers substantial weight reduction while maintaining structural integrity. The compact design enables greater flow output in a limited space—particularly critical for mobile equipment applications with strict space and weight constraints.
Application Areas
Construction Equipment: Excavators, loaders, dozers with multi-circuit hydraulic systems
Agricultural Machinery: Combine harvesters, large tractors, seeders with multi-function hydraulic control
Material Handling Equipment: Heavy-duty forklifts, telehandlers, reach stackers
Aerial Work Platforms: Large scissor lifts, boom lifts
Vocational & Municipal Equipment: Sanitation vehicles, concrete mixer trucks, specialty utility vehicles
Industrial Hydraulic Systems: Multi-actuator automation systems, test bench hydraulic power units
Expert Maintenance Tips
1. Pre-Installation Checks
Verify pump rotation direction is counter-clockwise (L) (viewed from the drive shaft end) matches system requirements. Reverse rotation will damage the shaft seal and prevent pressure build-up.
Check drive spline shaft and coupling fit precision—never use hammer-driven installation; always use proper pressing tools.
Ensure port specifications for each pump stage precisely match hydraulic fittings to prevent improper installation and leakage.
2. First Start-Up & Oil Priming
Prime the pump housing with clean hydraulic oil before first start-up; ensure all suction lines are fully filled—never run dry.
Recommended hydraulic fluid: HLP anti-wear hydraulic oil per DIN 51524, ISO VG 32–46 viscosity.
Each suction port of the triple pump must maintain adequate inlet pressure (typically no less than 0.8 bar absolute).
3. Filtration & Fluid Cleanliness
4. Multi-Stage Pressure Balance & Torque Limitation
Total drive torque is the sum of all pump stage torques. Ensure prime mover output torque meets: Δp₁ × Vg₁ + Δp₂ × Vg₂ + Δp₃ × Vg₃ ≤ M_max.
Platform F series (AZPF-2x) maximum allowable drive shaft torque is 85 Nm. System design must ensure the sum of pressure × displacement products across all stages does not exceed this limit.
5. Operating Monitoring & Maintenance
Maintain operating oil temperature within -10°C to +80°C.
If abnormal noise or pressure fluctuation occurs, first check for air ingestion in the system (inspect all suction line seals).
Regularly check torque on pump and piping connection bolts to prevent loosening from vibration.
