AZMF-12-016USA20PL-S0079 Rexroth Gear Motor 16cc 250bar

Product Overview

The AZMF-12-016USA20PL-S0079 (R918C03634) belongs to the Bosch Rexroth AZMF Series of high-performance external gear motors. As a representative model of Rexroth’s AZ “F” platform external gear motor series, the AZMF covers displacements from 8 to 22 cm³/rev and is renowned worldwide for its compact design, exceptional high-pressure capability, and superior power density.

The AZMF Series is one of Rexroth’s three external gear motor platforms (AZMF, AZMN, AZMG):

• AZMF (F Platform): Displacement 8–22 cm³/rev – compact design for light to medium hydraulic tasks

• AZMN (N Platform): Displacement 20–36 cm³/rev – medium platform

• AZMG (G Platform): Displacement 22–45 cm³/rev – large platform

The AZMF-12-016 delivers a geometric displacement of 16 cm³/rev. The series features slide bearings that better distribute loads, providing exceptional durability under heavy operational loads. All AZMF motors are fixed-displacement designs, offering extensive configuration options – including multiple shaft types, flange styles, port configurations, and seal materials. Select variants support bi-rotational operation for 2-quadrant and 4-quadrant applications.

Manufactured to strict Bosch Rexroth original specifications, this product features 100% form-fit-function interchangeability – mounting dimensions, port configurations, and shaft styles are fully identical to original Rexroth AZMF series motors, requiring zero modifications for direct replacement. Every motor undergoes 100% simulated duty-cycle testing prior to shipment, with performance validation conducted at rated pressure, flow, and actual load conditions.

Model Code Breakdown (AZMF-12-016USA20PL-S0079):

• AZMF: Rexroth external gear motor, F Platform

• 12: Component series (1X Series)

• 016: Displacement specification (16 cm³/rev)

• USA: Mounting and port configuration (US standard configuration)

• 20PL: Shaft and seal configuration

• S0079: Specific configuration code

Technical Specifications

AZMF-12-016USA20PL-S0079 (Specific Model)

• Model Number: AZMF-12-016USA20PL-S0079

• Rexroth Material Number: R918C03634

• Series: Bosch Rexroth AZMF Series

• Geometric Displacement: 16 cm³/rev

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

• Maximum Intermittent/Starting Pressure: 280 bar (4,060 psi)

• Maximum Speed: 3,000 RPM

• Minimum Speed: 500 RPM

• Speed Range: 500–3,000 RPM

• Construction: External gear motor, fixed displacement

• Bearing Type: Slide bearings

• Rotation: Bidirectional / Reversible (Universal)

• Operating Quadrants: Supports 2-quadrant and 4-quadrant operation

• Fluid Compatibility: Mineral oil (per DIN 51524/25)

• Operating Temperature Range: -20°C to +80°C (seal dependent)

• Viscosity Range: Broad viscosity range design

• Weight: Approx. 4.0 kg

AZMF Series (Full Series Specifications)

• Displacement Range: 8.0 – 22.5 cm³/rev

• Standard Displacements: 8 / 11 / 14 / 16 / 19 / 22 cm³/rev

• Maximum Continuous Pressure (8–16cc): 250 bar

• Maximum Continuous Pressure (19–22cc): 180 bar

• Maximum Intermittent/Starting Pressure (8–16cc): 280 bar

• Maximum Intermittent/Starting Pressure (19–22cc): 210 bar

• Maximum Speed (8cc): 4,000 RPM

• Maximum Speed (11cc): 3,500 RPM

• Maximum Speed (14–22cc): 3,000 RPM

• Minimum Speed: 500 RPM

AZMN / AZMG Series (Reference Specifications)

• AZMN Platform: Displacement 20–36 cm³/rev, continuous pressure 250 bar, intermittent pressure 280 bar

• AZMG Platform: Displacement 22–45 cm³/rev, continuous pressure 250 bar

Key Technical Advantages

1. 250 bar High-Pressure Capability – Superior Performance in a Compact Footprint

The AZMF Series delivers continuous operating pressures up to 250 bar and intermittent/starting pressures up to 280 bar within an exceptionally compact envelope. The combination of high pressures with small size and low weight makes it the ideal choice for applications where installation space is limited but high power output is required.

2. Wide Speed Range & Bidirectional Reversibility – Flexible Adaptation to Complex Operating Conditions

The AZMF Series supports a wide speed range from 500 to 3,000 RPM, adapting seamlessly to everything from low-speed high-torque to high-speed light-load conditions. The bidirectional reversible design supports 2-quadrant and 4-quadrant operation, excelling in applications requiring forward/reverse switching or load-overrunning scenarios.

3. Slide Bearings & Heavy-Duty Durability – The Core Assurance of Long Service Life

The AZMF Series features high-load slide bearings. Compared to conventional rolling element bearings, slide bearings distribute radial loads more evenly, providing superior durability and shock resistance under heavy-duty conditions. High-volume series production ensures consistent, high-quality manufacturing.

4. Extensive Configuration Flexibility – Meeting Diverse System Requirements

The AZMF Series offers extensive configuration options: multiple output shaft types (splined, keyed), multiple flange types (rectangular flange, SAE flange, square flange), multiple port connection styles (flange connections, threaded connections), and different seal material options. Integrated valves and speed sensors are also available as options.

5. Broad Viscosity & Temperature Range – Reliable Performance Under Demanding Conditions

The AZMF Series features broad viscosity and temperature operating ranges, maintaining stable performance under extreme ambient temperatures and wide viscosity fluctuations – particularly well-suited for outdoor mobile machinery and applications in regions with variable climatic conditions.

Application Areas

• Hydrostatic Fan Drives: Engine cooling fan hydraulic drives for construction equipment and commercial vehicles

• Road Construction Machinery: Road rollers, pavers

• Agricultural Machinery: Combine harvesters, forage harvesters

• Forestry Equipment: Forestry machinery and felling equipment

• Commercial Vehicles: Buses, trucks, special-purpose vehicles

• Construction Equipment Auxiliary Drives: Compact excavators, skid-steer loader auxiliary hydraulic systems

• Material Handling Equipment: Conveyors, lift tables

• Industrial Hydraulics: Machine tool hydraulics, packaging machinery

Expert Maintenance Tips

1. Fluid Cleanliness Control

AZMF Series gear motors are sensitive to fluid cleanliness. Recommended system filtration: ISO 4406 19/17/13 or better. Recommended fluids: mineral oil per DIN 51524/25. Contaminants accelerate wear on slide bearings and gear pairs, leading to loss of volumetric efficiency.

2. Confirm Model & Platform – Distinguishing AZMF from AZMN/AZMG

Rexroth offers three distinct external gear motor platforms: AZMF, AZMN, and AZMG. The AZMF Platform covers displacements of 8–22 cm³/rev; the AZMN Platform covers 20–36 cm³/rev; the AZMG Platform covers 22–45 cm³/rev. Please confirm the product platform is AZMF before procurement and installation to ensure mounting dimensions and performance parameters match.

3. Shaft Installation Precautions

AZMF Series motors are available with multiple shaft types (splined, keyed, etc.). Never use hammers to install couplings – use appropriate press-fit tools or heat-shrink methods. Improper installation will damage bearings and shaft seals.

4. First Start-Up & Air Bleeding

After installation, bleed air from the system through a loosened outlet fitting. Run the motor at low speed under no load for 5-10 minutes to ensure complete system air bleeding and proper oil film establishment on all lubrication surfaces. Gradually apply load to reach rated operating conditions. The AZMF Series has a minimum speed of 500 RPM – avoid operating below this speed during start-up.

5. Port Configuration for Bidirectional Motors

Select AZMF variants support bidirectional reversible operation. For reversible motors, the high and low pressure sides depend on port connections – ensure correct inlet and return port connections based on the required rotation direction during installation.

6. Verify Integrated Valve & Sensor Settings

If optional integrated functional valves or speed sensors are specified, confirm that valve settings (e.g., pressure relief set point) meet system requirements before installation. Incorrect valve settings may result in abnormal system performance or equipment damage.