Product Overview
The AZPFF-12-016/011RCP2020KB-S0007 (Order No. R918C01876 / 0510665152) is a tandem external gear pump from Bosch Rexroth’s AZPF High Performance Platform F series. This fixed-displacement external gear pump integrates two independent gear sections in a single housing, delivering two independent hydraulic outputs from a single drive shaft input.
This unit belongs to the AZPF Platform F series, featuring a first-stage displacement of 16 cm³/rev and a second-stage displacement of 11 cm³/rev, with a total combined displacement of 27 cm³/rev. Rexroth external gear pumps are available as standard gear pumps in the B, F, N, and G series, as well as SILENCE gear pumps in the S, T, and U series. The AZPF High Performance series is renowned for its compact design, high efficiency, and high reliability, making it suitable for a wide range of industrial and mobile hydraulic applications.
Key Interchangeability Advantage: Our AZPFF series tandem 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):
AZPFF = Tandem external gear pump (AZP + FF = tandem pump)
12 = Platform F, size code 12
016 = Stage I Displacement: 16.0 cm³/rev
011 = Stage II Displacement: 11.0 cm³/rev
R = Rotation: Clockwise (right-hand)
C = Shaft Type: Tapered 1:5
P = Mounting Flange: 2-hole mounting, ⌀50 mm
20 = Ports: Square flange
KB = Specific seal and configuration code
S0007 = Specific design code
Technical Specifications
AZPFF-12-016/011RCP2020KB-S0007 (R918C01876 / 0510665152)
Product Series: AZPF Platform F Series High Performance External Gear Pump
Pump Type: Tandem Gear Pump, two independent gear sections in series
Stage I Displacement: 16.0 cm³/rev
Stage II Displacement: 11.0 cm³/rev
Total Combined Displacement: 27.0 cm³/rev
Rated Continuous Operating Pressure: 250 bar
Peak Pressure: 280 bar
Maximum Speed: 3000 rpm
Minimum Speed: 600 rpm
Direction of Rotation: Clockwise (R – right-hand) (viewed from shaft end)
Drive Shaft: Tapered 1:5
Mounting Flange: 2-hole mounting, pilot diameter ⌀50 mm
Port Connections: Square flange (German standard)
Inlet Port Bolt Circle Diameter: 40 mm
Pressure Port Bolt Circle Diameter: 35 mm
Housing Material: Aluminum
Flange and Cover Material: Steel
Seals: Viton (FKM) (configuration-specific)
Port Position: Side
Overall Length: 235 mm
Width: 100 mm
Height: 85 mm
Weight: 4.9 kg
Key Technical Advantages
1. Tandem Integrated Design for Independent Dual-Circuit Output
Two independent gear sections are integrated in series within a single aluminum housing, driven by a single input shaft to simultaneously power both pump stages, independently supplying oil to two hydraulic circuits. Taking the AZPFF-12-016/016 as an example, Stage I withstands 280 bar intermittent pressure while Stage II is rated for 230 bar. This design dramatically simplifies hydraulic piping layout, reducing external connection points and leakage risks.
2. Compact Lightweight Aluminum Construction for High Power Density
The aluminum housing combined with steel flange and cover delivers substantial weight reduction while maintaining structural integrity, with a total weight of only 4.9 kg. The compact design enables greater flow output in a limited space – particularly critical for mobile equipment applications with strict space and weight constraints.
3. Pressure-Balanced Design 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 and mechanical efficiency for long-term continuous operation. High-strength materials and precision manufacturing processes deliver excellent wear resistance and long service life.
4. Optimized Gear Design for Low Noise Operation
Optimized gear design effectively reduces operating noise, making it suitable for applications with strict noise requirements. Combined with high-strength bearings and robust component design, the pump can withstand significant axial and radial loads.
5. Modular Design for Flexible Configuration
The AZPF platform features modular design, allowing flexible configuration to adapt to different operating conditions and application requirements. Supports multiple shaft types (tapered 1:5, splined, etc.), mounting flanges (2-hole / 4-hole), and port configurations for easy system integration and upgrades.
Application Areas
Agricultural Machinery: Combine harvesters, large tractors, Claas and other agricultural equipment hydraulic systems
Construction Equipment: Excavators, loaders with multi-circuit hydraulic systems
Material Handling Equipment: Forklifts, telehandlers hydraulic systems
Industrial Hydraulic Systems: Multi-actuator automation systems, test bench hydraulic power units
Wind Power: Wind turbine gearbox lubrication and hydraulic control systems
Mobile and Industrial Hydraulics: General mobile equipment and industrial hydraulic applications
Expert Maintenance Tips
1. Model Confirmation and Selection
The AZPFF-12-016/011RCP2020KB-S0007 is a tandem pump with Stage I displacement of 16 cm³/rev and Stage II displacement of 11 cm³/rev.
Order number information: R918C01876 / 0510665152.
This model features clockwise rotation (R) , with counter-clockwise rotation (L) versions also available. Always verify rotation direction based on original machine drive orientation during selection.
2. Pre-Installation Checks
Confirm pump rotation is clockwise (R) (viewed from shaft end) matches system drive direction.
Check drive shaft type is tapered 1:5 – never use hammer-driven installation; always use proper pressing tools.
Confirm mounting flange is 2-hole mounting, pilot diameter ⌀50 mm.
Confirm inlet and pressure port specifications (inlet bolt circle diameter 40 mm, pressure port 35 mm) precisely match hydraulic fittings.
3. First Start-Up & Oil Priming
Prime the pump housing with clean hydraulic oil before first start-up; ensure suction lines are fully filled – never run dry.
Recommended fluid: mineral oil or synthetic hydraulic oil per Rexroth specifications.
Maintain operating temperature within -10°C to +80°C.
Speed range: 600 – 3000 rpm.
4. Filtration & Fluid Cleanliness
5. Operating Monitoring & Torque Limitation
Total drive torque is the sum of all pump stage torques. Stage I maximum operating pressure: 250 bar (continuous) / 280 bar (peak).
If abnormal noise or pressure fluctuation occurs, first check for air ingestion in the system (inspect suction line seals).
Regularly check torque on pump and piping connection bolts to prevent loosening from vibration.
Recommended comprehensive inspection every 1000 operating hours or 6 months.
