Rexroth A2FM Hydraulic Motor: Models, Applications and Replacement Guide
A practical guide to fixed displacement axial piston motors, displacement selection, industrial applications and hydraulic motor replacement.
Product Focus: Bosch Rexroth A2FM Series | Motor Type: Fixed Displacement Axial Piston Motor | Applications: Mobile and Industrial Hydraulic Drives
1. What Is a Rexroth A2FM Hydraulic Motor?
The Rexroth A2FM hydraulic motor is a fixed displacement axial piston motor manufactured under the Bosch Rexroth product family. Its bent-axis design converts hydraulic energy into mechanical rotary power and supports hydrostatic drive systems in both open and closed circuits, subject to the selected motor configuration.
Unlike a variable displacement hydraulic motor, the A2FM has a fixed geometric displacement. Its operating speed depends primarily on the supplied hydraulic flow and motor displacement, while the available output torque depends on the pressure differential across the motor and its mechanical efficiency.
For equipment manufacturers, hydraulic repair workshops and international spare parts buyers, the A2FM series provides a range of motor sizes for different drive requirements. The correct selection should consider operating pressure, rotational speed, hydraulic flow, installation dimensions and duty cycle rather than the model name alone.
Key Product Features
2. Rexroth A2FM Hydraulic Motor Models and Displacement Sizes
Buyers searching for a Rexroth A2FM motor for sale, a replacement axial piston motor or a specific hydraulic motor spare part should first identify the required displacement. The A2FM product family covers a broad range of nominal sizes, although availability and valid combinations depend on the relevant series and technical specification.
| Model Group | Common Nominal Sizes | Selection Considerations |
|---|---|---|
| Small displacement | A2FM5, A2FM10, A2FM12, A2FM16 | Required speed, flow and installation space |
| Compact and medium displacement | A2FM23, A2FM28, A2FM32, A2FM45, A2FM56, A2FM63, A2FM80, A2FM90 | Torque demand, operating speed and mounting interface |
| Large displacement | A2FM107, A2FM125, A2FM160, A2FM180, A2FM200 | System flow, pressure differential, cooling and duty cycle |
| Extra-large displacement variants | A2FM250, A2FM355, A2FM500, A2FM710, A2FM1000 | Exact series, permissible operating conditions and configuration verification |
Important: The sizes above represent nominal size designations found across A2FM documentation and variants; they should not be interpreted as a guarantee that every size is available in every series. Some older and newer series have different size ranges and pressure ratings. Always confirm the complete model code against the applicable Bosch Rexroth datasheet before ordering.
3. Industrial Applications of A2FM Axial Piston Motors
The application of a hydraulic motor depends on the complete hydraulic circuit, transmission layout and required mechanical output. The Rexroth A2FM series is designed for mobile and stationary hydrostatic drives, with the specific motor configuration selected to suit the equipment.
For demanding applications, the motor must be matched to the actual load profile. A motor that fits physically may still be unsuitable if the rated pressure, speed limits, case-drain requirements or circuit configuration differ from the original design.
4. How to Select a Replacement Rexroth A2FM Motor
When sourcing a Rexroth A2FM hydraulic motor replacement, maintenance teams and hydraulic equipment distributors should verify more than the displacement number. A correct replacement helps reduce installation problems, commissioning delays and the risk of premature component failure.
5. Technical Considerations Before Ordering
The A2FM is available in different sizes and configurations, and its pressure ratings are not identical across the entire product family. Published Series 6 documentation, for example, distinguishes pressure ratings by size group. Therefore, a single pressure value should not be applied to all A2FM motors.
Hydraulic engineers should use the relevant datasheet to verify nominal and maximum pressure, allowable speed, fluid requirements, temperature limits and case pressure. The complete hydraulic system should also be evaluated for heat generation, filtration, lubrication and correct installation.
For replacement purchases, the original nameplate and equipment information are especially valuable. If the nameplate is damaged or incomplete, photographs of the motor, flange, shaft and hydraulic connections can help narrow down possible configurations, but final identification should be confirmed before ordering.
6. Frequently Asked Questions About Rexroth A2FM Motors
Q1. Is the Rexroth A2FM a fixed or variable displacement motor?
The Rexroth A2FM is a fixed displacement axial piston motor. Its geometric displacement is fixed, while speed and torque depend on hydraulic flow, pressure differential and operating efficiency.
Q2. What A2FM displacement sizes are available?
The A2FM family spans multiple nominal sizes, from small-displacement versions to large units. The exact available sizes depend on the series and configuration. Send the complete model code to confirm the required version.
Q3. Can an A2FM motor replace another hydraulic piston motor?
Potentially, but compatibility must be verified. Displacement, pressure rating, speed, mounting flange, shaft, port arrangement and hydraulic circuit requirements must match the intended application.
Q4. How do I identify the correct Rexroth A2FM model?
Provide a clear nameplate photograph and complete type code. The material number, displacement, series, shaft configuration, mounting flange and port arrangement are useful for verification.
Q5. Is the A2FM suitable for open and closed hydraulic circuits?
The A2FM family is designed for hydrostatic drives in open and closed circuits. Suitability must be checked against the specific version and its circuit, pressure and installation requirements.
Q6. What information is needed for an A2FM motor quotation?
Please provide the full model code or material number, required quantity, equipment application, delivery destination and requested product condition. A nameplate photograph is helpful when available.
Q7. Can I select an A2FM motor by displacement alone?
No. Displacement is only one selection parameter. Working pressure, flow, speed, torque, shaft, flange, port configuration and duty cycle must also be considered.
Q8. How can I reduce the risk of ordering an incompatible replacement motor?
Request model verification against the original nameplate and technical documentation before purchase. Compare mounting dimensions and hydraulic connections, and confirm the operating requirements with a qualified hydraulic specialist.
Looking for a Rexroth A2FM Hydraulic Motor?
Contact our hydraulic product team for model verification, replacement selection and quotation support for Rexroth A2FM axial piston motors. Share your complete model code, material number or nameplate photograph to help us identify the required configuration.
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Model / Material Number / Displacement / Quantity / Application Equipment / Delivery Destination
Product availability, condition, lead time and technical compatibility should be confirmed individually before order placement.
