Product Overview
The AZPFF-12-014/011RPR0101MB is a high-performance external gear double pump from the Bosch Rexroth AZPF series, Platform F. This tandem pump configuration features a first-stage displacement of 14 cc/rev and a second-stage displacement of 11 cc/rev, delivering a total displacement of 25 cc/rev. It belongs to the Platform F fixed-displacement gear pump series, which offers displacements ranging from 4 cc/rev to 28 cc/rev.
The AZPF series is one of the core product lines in the Rexroth external gear pump portfolio, alongside the B, F, N, and G series platforms. Engineered with plain slide bearings, the series is specifically designed for heavy-load applications.
As a tandem pump, the AZPFF-12-014/011RPR0101MB features two pump stages driven by a common input shaft, enabling simultaneous oil supply to two independent hydraulic circuits or flow combination for greater total output. The pump fully complies with Rexroth original design standards and mounting interface specifications, offering 100% direct interchangeability with OEM pumps. Every unit undergoes 100% workload simulation testing prior to shipment, rigorously validating pressure retention, volumetric efficiency, and internal leakage performance to meet or exceed OEM standards.
Complete Model Code Breakdown
AZPFF — Series: External gear pump, Platform F, Tandem (double) pump configuration
12 — Size group: Group 12 (Platform F medium-frame)
014 — First-stage displacement: 14 cc/rev
011 — Second-stage displacement: 11 cc/rev
RPR — Seal and bearing configuration code
0101MB — Flange, shaft, and port configuration code (includes mounting interface and port specifications)
Technical Specifications
Model: AZPFF-12-014/011RPR0101MB
Series: AZPF Platform F (Platform F) High-Performance External Gear Pump
Pump Type: Tandem Double Gear Pump
First-Stage Displacement: 14 cc/rev
Second-Stage Displacement: 11 cc/rev
Total Displacement: 25 cc/rev
Rated Pressure (Continuous): Up to 250 bar
Peak Pressure (Intermittent): Up to 280 bar
Speed Range: 500 – 3000 rpm
Operating Temperature Range: -10℃ to +80℃
Recommended Media: Mineral oil and synthetic hydraulic oils
Bearing Type: Plain / Slide Bearings, designed for heavy-load applications
Housing Material: High-strength aluminum alloy
Gear Material: Case-hardened steel
Mounting Interface: SAE standard flange interface
Rotation Direction: Right-hand (clockwise) as configured by RPR code
Key Technical Advantages
1. Tandem Pump Design – One Pump, Two Circuits
The AZPFF-12-014/011RPR0101MB features a tandem pump configuration with two stages driven by a common input shaft, enabling simultaneous oil supply to two independent hydraulic circuits. This design significantly reduces the number of pumps required in the system, saves installation space, and lowers system complexity and cost. The two stages can operate independently or be combined for greater total flow output.
2. High-Pressure Capability for Heavy-Duty Applications
With a continuous rated pressure of up to 250 bar and intermittent peak pressure of up to 280 bar, combined with plain slide bearings, the pump effectively withstands high hydraulic loads and axial/radial forces. It is ideally suited for heavy-load applications in construction and agricultural machinery.
3. Plain Slide Bearings – Extended Service Life and High Reliability
The plain slide bearing design offers superior shock load resistance and longer service life compared to rolling element bearings. Under high-pressure conditions, slide bearings maintain a stable oil film that effectively reduces metal-to-metal contact wear, significantly extending pump service life and reducing maintenance costs.
4. High Volumetric Efficiency with Low-Noise Operation
The Rexroth AZPF series gear pumps feature optimized gear tooth geometry and precision manufacturing processes, delivering high volumetric and mechanical efficiency. The optimized gear design effectively reduces operating noise, making it suitable for applications with strict noise requirements.
5. Modular Design for Flexible Configuration
The AZPF series adopts a modular design philosophy, supporting a wide range of displacement combinations, shaft types, flange types, and port configurations. AZPFF tandem pumps can be flexibly combined with AZPF single pumps and additional stages to form multi-pump assemblies, meeting the diverse flow requirements of complex hydraulic systems.
6. 100% Factory Tested & Direct Interchangeability
Every unit undergoes 100% workload simulation testing prior to shipment, covering pressure retention verification, internal leakage detection, and flow validation. Fully compliant with Rexroth original design standards, with flange dimensions, spline shaft specifications, and mounting interfaces identical to OEM pumps—direct drop-in replacement with zero modifications required.
Application Areas
The AZPFF-12-014/011RPR0101MB tandem gear pump is widely used in the hydraulic systems of the following equipment:
Wheel Loaders: Independent oil supply for steering systems and implement hydraulics
Backhoe Loaders: Dual-circuit oil supply for travel drive and implement functions
Telescopic Handlers: Dual-circuit oil supply for boom extension and load lifting
Agricultural Tractors: Independent oil supply for hydraulic outlets and steering systems
Dump Trucks: Oil supply for tipping systems and auxiliary hydraulic systems
Industrial Hydraulic Equipment: Multi-circuit hydraulic systems for injection molding machines, presses, and material handling equipment
Mobile Cranes: Dual-circuit oil supply for swing and luffing mechanisms
Expert Maintenance Tips
1. Rotation Direction Confirmation
The “RPR” code in the model designation indicates right-hand (clockwise) rotation configuration. Before installation, always verify that the PTO rotation direction of the host machine matches the pump’s rotation direction—incorrect rotation will result in pump failure to prime and may cause severe damage to gears and bearings within a short period.
2. Tandem Pump Installation Precautions
The two stages of the tandem pump share a common drive shaft—pay special attention to axial alignment accuracy during installation to avoid axial over-positioning that may cause bearing overload
Thoroughly clean the mounting flange and spline shaft mating surfaces before installation to ensure no debris remains
Use Rexroth-specified torque values for mounting bolts—avoid over-tightening which may cause housing distortion
Ensure correct connection of inlet and outlet ports for both stages—do not interchange
3. First Start-Up and Bleeding
Before first start-up, fill both pump stages with hydraulic oil through their respective inlet ports—never start dry
After start-up, run at low speed with no load for 2–3 minutes to ensure complete air evacuation from both stages and the system
Check both stages separately for abnormal noise or leakage
4. Fluid and Filtration
Use high-quality mineral hydraulic oil compliant with DIN 51524 standards
Maintain system oil cleanliness to ISO 4406 18/15 or better
Slide bearings are sensitive to fluid cleanliness—install a high-quality suction filter in the inlet line
Operating temperature should be maintained within -10℃ to +80℃
5. Periodic Maintenance
Check mounting bolt torque every 1,000 operating hours
Regularly monitor operating pressure of both stages to ensure they do not exceed rated values
If flow output decreases, noise levels increase abnormally, or system temperature rises excessively, inspect and replace worn components promptly
Replace pump seals every 2,000–3,000 operating hours or based on actual operating conditions
