AZPFF-10-025/004RHO0202MB Rexroth Hydraulic Gear Pump 25/4cc 250bar

Product Overview

The AZPFF Series is a tandem pump (dual pump) configuration within the Bosch Rexroth AZP Platform F-type high-performance external gear pump family. Based on the AZPF Platform F series, the AZPFF features high-strength aluminum alloy housings with high-load journal bearings, with multiple pump sections串联 through interlocking housings. The AZPFF Series covers nominal sizes from 002 to 022 (4 to 22 cm³/rev), with each pump section independently rated for 250 bar continuous pressure and 280 bar intermittent pressure.

This page features two AZPFF tandem pump models:

• AZPFF-10-025/004RHO0202MB: First section 25 cm³/rev, second section 4 cm³/rev

• AZPFF-11-016/014RRR2020KB-S0081 (Material No. 0510665172): First section 16 cm³/rev, second section 14 cm³/rev

As original specification models within the Bosch Rexroth AZPFF line, these products enable direct form-fit-function interchangeability with original Rexroth units—no modifications to piping or mounting interfaces required. Our replacement solutions strictly adhere to Rexroth technical standards and undergo 100% simulated in-service testing to ensure performance, reliability, and service life identical to OEM products.

Technical Specifications 

Model 1: AZPFF-10-025/004RHO0202MB

Applicable Model:

• AZPFF-10-025/004RHO0202MB

Model Code Breakdown (per Bosch Rexroth AZPFF naming convention):

• AZPFF — Rexroth AZP Platform F Tandem External Gear Pump

• 10 — Series code (1X Series)

• 025 — First section nominal size (25 cm³/rev)

• 004 — Second section nominal size (4 cm³/rev)

• RHO — Rotation and configuration code (R = Right-hand)

• 0202 — Port/flange configuration code

• MB — Seal and specific configuration

Series Technical Specifications (per Bosch Rexroth AZPFF official documentation):

• Product Series: Bosch Rexroth AZPFF Tandem External Gear Pump

• Product Platform: AZPF Platform F (High-Performance External Gear Pump)

• Body Material: High-Strength Aluminum Alloy Housing

• Pump Type: Fixed Displacement External Gear Pump

• Nominal Size Range: 002 – 022 (4 – 22 cm³/rev)

• Continuous Operating Pressure: Up to 250 bar

• Intermittent Operating Pressure: Up to 280 bar

• Speed Range: 500 – 3,000 rpm

• Operating Temperature Range: -10°C to +80°C

• Fluid Compatibility: Mineral Hydraulic Oil (HL, HLP) and Synthetic Hydraulic Oil

• Seals: NBR (Standard), FKM Optional

• Mounting: SAE Standard Flange

• Shaft Types: SAE Splined / Parallel Key / Tapered 1:5

This Model Detailed Specifications (estimated based on AZPFF Series parameters):

• First Section Displacement: 25 cm³/rev

• Second Section Displacement: 4 cm³/rev

• Total Displacement: 29 cm³/rev

• Continuous Operating Pressure: 250 bar (3,625 psi)

• Intermittent Operating Pressure: 280 bar (4,060 psi)

• Speed Range: 500 – 3,000 rpm

• Rotation Direction: Right-hand (clockwise, viewed from shaft end)

• Operating Temperature Range: -10°C to +80°C

• Fluid Compatibility: Mineral Hydraulic Oil (HL, HLP)

• Seal Material: Per specific configuration (NBR / FKM)

• Mounting Flange: SAE Standard Flange

Model 2: AZPFF-11-016/014RRR2020KB-S0081

Applicable Model:

• AZPFF-11-016/014RRR2020KB-S0081

• Material Number: 0510665172

Model Code Breakdown (per Bosch Rexroth AZPFF naming convention):

• AZPFF — Rexroth AZP Platform F Tandem External Gear Pump

• 11 — Series code (1X Series)

• 016 — First section nominal size (16 cm³/rev)

• 014 — Second section nominal size (14 cm³/rev)

• RRR — Rotation and configuration code (R = Right-hand)

• 2020 — Port/flange configuration code

• KB — Seal and specific configuration

• S0081 — Customer-specific configuration code

Series Technical Specifications (per Bosch Rexroth AZPFF official documentation):

• Product Series: Bosch Rexroth AZPFF Tandem External Gear Pump

• Product Platform: AZPF Platform F (High-Performance External Gear Pump)

• Body Material: High-Strength Aluminum Alloy Housing

• Pump Type: Fixed Displacement External Gear Pump

• Nominal Size Range: 002 – 022 (4 – 22 cm³/rev)

• Continuous Operating Pressure: Up to 250 bar

• Intermittent Operating Pressure: Up to 280 bar

• Speed Range: 500 – 3,000 rpm

• Operating Temperature Range: -10°C to +80°C

• Fluid Compatibility: Mineral Hydraulic Oil (HL, HLP) and Synthetic Hydraulic Oil

• Seals: NBR (Standard), FKM Optional

• Mounting: SAE Standard Flange

• Shaft Types: SAE Splined / Parallel Key / Tapered 1:5

This Model Detailed Specifications (estimated based on AZPFF Series parameters):

• First Section Displacement: 16 cm³/rev

• Second Section Displacement: 14 cm³/rev

• Total Displacement: 30 cm³/rev

• Continuous Operating Pressure: 250 bar (3,625 psi)

• Intermittent Operating Pressure: 280 bar (4,060 psi)

• Speed Range: 500 – 3,000 rpm

• Rotation Direction: Right-hand (clockwise, viewed from shaft end)

• Operating Temperature Range: -10°C to +80°C

• Fluid Compatibility: Mineral Hydraulic Oil (HL, HLP)

• Seal Material: Per specific configuration (NBR / FKM)

• Mounting Flange: SAE Standard Flange

Key Technical Advantages

1. Tandem Pump Modular Design — One Shaft, Two Circuits, Simplified System Layout
AZPFF tandem pumps deliver two independent oil sources driven by a single shaft. This design significantly reduces the number of drive interfaces required and simplifies hydraulic piping layout, making it the ideal choice for complex multi-circuit hydraulic systems.

2. High Pressure Capacity for Heavy-Duty Applications
The AZPFF Series delivers continuous operating pressures up to 250 bar and intermittent pressures up to 280 bar. The high-load journal bearing design makes it particularly suitable for heavy-duty applications.

3. Journal Bearing Design — Excellent Wear Resistance and Long Service Life
High-load journal bearings provide sufficient elasticity to create surface contact rather than line contact, ensuring excellent wear resistance, particularly at low operating speeds. Combined with high-strength aluminum alloy housings, long-term reliable operation is ensured.

4. Compact Design — High Power Density
AZPFF tandem pumps feature compact modular design that delivers higher flow output in a smaller footprint. Optimized gear designs effectively reduce operating noise.

5. Flexible Configuration Options with Wide Applicability
The AZPFF Series supports multiple flange, shaft, and connection options. Widely used in construction machinery, agricultural machinery, material handling equipment, and power steering systems.

Application Areas

• Construction Equipment: Multi-circuit hydraulic working systems and steering systems for excavators and wheel loaders

• Agricultural Machinery: Multi-circuit hydraulic outputs for large tractors (steering, lift, auxiliary functions)

• Material Handling Equipment: Forklift hydraulic systems, aerial work platforms

• Power Steering Systems: Hydraulic power steering for mobile equipment

• Industrial Hydraulic Systems: Hydraulic power units for industrial equipment

• Lifting Equipment: Crane and heavy equipment hydraulic systems

Expert Maintenance Tips

1. Installation Precautions

• The AZPFF Series are uni-directional rotation pumps—verify that the system’s required rotation direction matches the pump’s identification marking before installation. Both featured models feature right-hand (clockwise) rotation.

• Ensure coaxial alignment between the pump and drive shaft; flexible couplings are recommended.

• For tandem pump installations, pay special attention to the port connection orientation of both pump sections to ensure correct inlet/outlet configuration.

2. Fluid Management

• Use mineral hydraulic oils conforming to DIN 51524 standards (HL, HLP).

• System fluid cleanliness must meet Rexroth-recommended standards.

• Operating temperature should be maintained within -10°C to +80°C.

• Prime the pump by filling the housing with hydraulic fluid through the suction port before initial start-up. Never run the pump dry.

3. Start-Up & Commissioning

• Use jog start method for initial start-up; verify correct rotation direction before continuous operation.

• Allow the pump to run under no-load (low pressure) conditions for 2-3 minutes to purge air and ensure proper lubrication.

• Gradually increase to operating pressure (up to 250 bar continuous) while monitoring noise, temperature, and system pressure for normal operation.

4. Routine Maintenance

• AZPFF gear pumps themselves are maintenance-free; however, regular maintenance of the entire hydraulic system is essential for trouble-free pump operation.

• Inspect system fluid cleanliness and condition every 1,000-2,000 operating hours.

• Regularly replace return line filters and suction strainers to prevent contaminant ingress into the pump body.