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- MPL-B420F-M-X225
- Low-Inertia Brushless Servo Motors Product
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1. Product Overview
The MPL-B420F-M-X225 is a high-performance brushless servo motor from the MPL low-inertia servo motor family. It is designed for industrial motion-control systems where controlled acceleration, accurate positioning, high-speed operation, and reliable closed-loop feedback are required.
The motor uses a 400 V-class electrical design, a 115 mm frame size, a 2-inch magnet stack, and a multi-turn high-resolution encoder. It is supplied in a configuration without an integrated brake and without a factory-installed shaft key or shaft seal according to the configuration data associated with the X225 designation.
The MPL-B420F-M-X225 is also associated with replacement applications for electric-cylinder systems, where the motor provides rotary motion to the mechanical actuator. The X225 designation is therefore somewhat different from the more common standalone MPL motor catalog configurations because it is also used as a replacement motor within a specific actuator family.
Its multi-turn high-resolution feedback makes it suitable for motion systems that need absolute position information over more than one revolution.
The motor’s compact construction, low-inertia characteristics, high-resolution feedback, and flexible connector arrangement make it suitable for automated machinery, positioning equipment, electric-cylinder systems, material handling, packaging, and other industrial motion applications.
2. Brand and Product Classification
| Parameter | Specification |
|---|---|
| Model | MPL-B420F-M-X225 |
| Brand | Allen-Bradley |
| Product Family | MP-Series |
| Product Series | MPL Low-Inertia Servo Motors |
| Product Type | Brushless Servo Motor |
| Motor Construction | Permanent-magnet brushless servo motor |
| Voltage Class | 400 V class |
| Nominal Supply Class | 460 V AC |
| Frame Size | 115 mm |
| Magnet Stack | 2 in. / 50.8 mm |
| Feedback | Multi-turn high-resolution encoder |
| Shaft Configuration | No factory shaft key |
| Shaft Seal | No factory shaft seal in the X225 configuration |
| Brake | No integrated brake |
| Connector | Circular DIN |
| Connector Style | Right-angle |
| Connector Rotation | 180° rotatable |
| Maximum Speed | Approximately 3150 RPM |
| Rated Power | Approximately 1.45 kW |
| Phase | 3-phase |
| Motor Weight | Approximately 2.8 kg |
| Application Category | Industrial servo motion control |
| Special Application | Electric-cylinder replacement motor |
The exact X225 configuration is listed as a 400 V-class MPL servo motor with a 115 mm frame, 2-inch magnet stack, multi-turn high-resolution encoder, no shaft key/seal, and no brake.
3. Product Series
MPL Low-Inertia Servo Motor Series
The MPL series consists of compact brushless permanent-magnet servo motors designed for closed-loop motion-control applications.
The series is intended for machinery that requires controlled speed, controlled torque, precise positioning, and rapid changes in operating conditions.
A major characteristic of this motor family is its low-inertia design.
Low rotor inertia is particularly useful when the machine requires frequent acceleration and deceleration. A servo axis may need to accelerate from zero speed, reach a commanded speed, stop at a precise location, reverse direction, and repeat the same sequence continuously.
The lower rotational inertia of the motor helps the servo system respond quickly to these commands.
The MPL-B420F-M-X225 belongs to the MPL-B420F motor configuration and uses a multi-turn high-resolution feedback system.
4. Model Number Explanation
The complete model number is:
MPL-B420F-M-X225
The principal configuration information can be summarized as follows.
| Model Section | General Meaning |
|---|---|
| MPL | MPL low-inertia brushless servo motor family |
| B | 400 V-class motor family |
| 420 | B420 motor frame/stack configuration |
| F | F-series motor configuration |
| M | Multi-turn high-resolution encoder |
| X225 | Special replacement configuration associated with the electric-cylinder application |
The X225 suffix is important because it identifies a particular replacement-motor configuration rather than simply being an ordinary feedback or shaft suffix.
The related replacement documentation identifies MPL-B420F-M-X225 as a replacement motor used with an electric-cylinder configuration, while MPL-B420F-M-X226 is the corresponding version with a 24 V brake.
5. Main Technical Specifications
| Parameter | Specification |
|---|---|
| Model | MPL-B420F-M-X225 |
| Brand | Allen-Bradley |
| Series | MPL Low-Inertia Servo Motor |
| Motor Type | Brushless permanent-magnet servo motor |
| Voltage Class | 400 V |
| Nominal Voltage | 460 V AC |
| Phase | 3-phase |
| Maximum Speed | Approximately 3150 RPM |
| Rated Power | Approximately 1.45 kW |
| Feedback | Multi-turn high-resolution encoder |
| Frame Size | 115 mm |
| Magnet Stack | 2 in. / 50.8 mm |
| Shaft Key | None |
| Shaft Seal | None in X225 configuration |
| Brake | None |
| Connector | Circular DIN |
| Connector Orientation | Right-angle |
| Connector Rotation | 180° |
| Motor Weight | Approximately 2.8 kg |
| Approximate Weight in Pounds | 6.2–6.25 lb |
| Mounting | Flange-mounted servo motor |
| Operating Temperature Reference | Up to approximately 40 °C without derating |
| Protection | Configuration-dependent |
| Application | Industrial motion control / electric-cylinder replacement |
The published product information identifies approximately 1.45 kW, 3150 RPM maximum, 3-phase, and 460 V AC characteristics for the X225 motor.
6. Electrical Characteristics
The MPL-B420F-M-X225 is intended for operation as part of a compatible servo-drive system.
It is not a conventional standalone induction motor.
The servo drive supplies controlled current to the motor and uses the encoder feedback to regulate position and speed.
| Electrical Parameter | Specification |
|---|---|
| Model | MPL-B420F-M-X225 |
| Voltage Class | 400 V |
| Nominal Voltage | 460 V AC |
| Phase | 3-phase |
| Maximum Speed | Approximately 3150 RPM |
| Rated Output | Approximately 1.45 kW |
| Operating Frequency Reference | 0–210 Hz |
| Motor Type | Brushless permanent-magnet |
| Control Method | Servo drive / closed-loop control |
| Feedback | Multi-turn high-resolution encoder |
| Brake | None |
| Motor Connection | Circular DIN connector |
The published product description specifies a 0–210 Hz operating-frequency range together with 460 V AC, three-phase operation and approximately 1.45 kW output.
7. Mechanical Dimensions
The MPL-B420F-M-X225 uses a 115 mm frame size and a 2-inch magnet stack.
The 2-inch value corresponds to approximately 50.8 mm.
It is important to distinguish the frame size and magnet stack from the total outside dimensions of the motor.
The frame dimension describes the motor mounting class, while the magnet stack describes the active motor stack length.
The complete motor envelope also depends on the shaft, connector, flange, and rear-end construction.
| Mechanical Parameter | Specification |
|---|---|
| Model | MPL-B420F-M-X225 |
| Frame Size | 115 mm |
| Magnet Stack | 2 in. |
| Magnet Stack Metric | Approximately 50.8 mm |
| Mounting | Flange-mounted |
| Shaft | No factory key |
| Shaft Seal | No factory shaft seal |
| Brake | None |
| Connector | Circular DIN |
| Connector Type | Right-angle |
| Connector Rotation | 180° |
| Overall Motor Length | Configuration-dependent |
| Overall Motor Width | Configuration-dependent |
| Overall Motor Height | Configuration-dependent |
| Installation Envelope | Must be checked against mechanical drawing |
The 115 mm frame and 2-inch magnet stack are specifically identified for the X225 configuration.
8. Weight
The published weight for the MPL-B420F-M-X225 is approximately 6.2–6.25 lb, corresponding to approximately 2.81–2.83 kg.
For practical product documentation, it is reasonable to specify the motor weight as approximately 2.8 kg.
| Weight Parameter | Approximate Value |
|---|---|
| Model | MPL-B420F-M-X225 |
| Motor Weight | Approximately 2.8 kg |
| Published Weight | Approximately 2.81–2.83 kg |
| Equivalent Imperial Weight | Approximately 6.2–6.25 lb |
| Shipping Weight | Higher than motor-only weight; packaging dependent |
The two published catalog listings give approximately 2.81 kg and 2.83 kg, respectively, which are effectively the same value for general catalog purposes.
9. Speed and Power
The MPL-B420F-M-X225 has a maximum speed of approximately 3150 RPM and a rated output of approximately 1.45 kW.
This makes it different from the B420P configuration, which is a higher-speed 5000 RPM motor family member.
The B420F-M-X225 is intended for applications where the specific F-series motor characteristics and actuator compatibility are important.
| Performance Parameter | Specification |
|---|---|
| Model | MPL-B420F-M-X225 |
| Maximum Speed | 3150 RPM |
| Rated Power | 1.45 kW |
| Voltage | 460 V AC |
| Phase | 3-phase |
| Frequency Range | 0–210 Hz |
| Feedback | Multi-turn high-resolution |
| Brake | None |
| Weight | Approximately 2.8 kg |
The 3150 RPM and 1.45 kW figures are listed in published product information for the exact X225 part number.
10. Multi-Turn High-Resolution Encoder
The MPL-B420F-M-X225 uses a multi-turn high-resolution encoder.
This is an important feature when the motion system needs position information extending across multiple motor revolutions.
A single-turn encoder is generally concerned with the motor’s position within one revolution.
A multi-turn system extends the position-tracking capability across multiple revolutions, which can be useful for applications involving:
- Long positioning travel
- Electric cylinders
- Linear actuators
- Screw-driven mechanisms
- Multi-revolution rotary axes
- Absolute positioning systems
- Coordinated motion
The multi-turn feedback arrangement is especially relevant to the X225 configuration because the motor is associated with electric-cylinder applications.
11. Electric-Cylinder Applications
One distinctive characteristic of the MPL-B420F-M-X225 is its relationship to electric-cylinder replacement applications.
The replacement documentation identifies the X225 motor with an electric-cylinder configuration using a 20 mm/revolution ball-screw pitch.
This means the motor can be used in systems where rotary motor motion is converted into linear movement through a ball screw.
Typical applications include:
- Linear positioning
- Push-pull mechanisms
- Automated pressing
- Clamping
- Lifting
- Product positioning
- Machine-tool auxiliary axes
- Material transfer
- Linear indexing
- Automated fixtures
The motor therefore has a useful role in systems where a servo motor must produce controlled linear motion through a mechanical transmission.
12. No-Brake Configuration
The MPL-B420F-M-X225 is supplied without an integrated brake.
This is an important consideration when selecting the motor.
A no-brake motor is suitable for applications where the mechanical system does not require the motor to provide holding torque after servo power is removed.
For vertical or gravity-loaded applications, however, additional mechanical holding arrangements may be necessary.
The closely related MPL-B420F-M-X226 provides a 24 V brake configuration for applications that require a motor-mounted holding brake.
| Feature | MPL-B420F-M-X225 | MPL-B420F-M-X226 |
|---|---|---|
| Motor Family | MPL-B420F | MPL-B420F |
| Feedback | Multi-turn high-resolution | Multi-turn high-resolution |
| Brake | None | 24 V DC brake |
| Frame | 115 mm | 115 mm |
| Stack | 2 in. | 2 in. |
| Main Difference | No integrated brake | Integrated holding brake |
13. Shaft Configuration
The X225 configuration does not include a factory-installed shaft key.
This provides a smooth shaft interface for the associated mechanical design.
The absence of a shaft key can be useful in applications where the motor is connected through a specialized coupling or actuator mechanism.
The product information also indicates that shaft-key and shaft-seal options can be added in appropriate configurations.
| Shaft Parameter | Specification |
|---|---|
| Model | MPL-B420F-M-X225 |
| Shaft Key | None |
| Shaft Seal | None in standard X225 configuration |
| Coupling | Application-specific |
| Mechanical Interface | Designed for compatible actuator/coupling arrangement |
The shaft configuration should be verified carefully when ordering a replacement motor because changing the shaft arrangement can affect mechanical compatibility.
14. Shaft Seal and Protection
Published information for the X225 configuration describes the motor without a factory shaft key or seal.
A shaft seal may be relevant when the motor is exposed to liquids, washdown conditions, or other contaminants.
The product information indicates that adding shaft protection can provide additional protection for the motor shaft and can be associated with an IP66 configuration.
This should not be interpreted as a blanket statement that every X225 motor is supplied as IP66.
The exact enclosure and shaft-seal configuration should be confirmed for the individual motor being purchased or installed.
15. Connector
The MPL-B420F-M-X225 uses a circular DIN connector in a right-angle configuration.
The connector is rotatable through approximately 180 degrees.
This provides useful flexibility when the motor is installed in a restricted machine space.
| Connector Parameter | Specification |
|---|---|
| Model | MPL-B420F-M-X225 |
| Connector | Circular DIN |
| Configuration | Right-angle |
| Rotation | 180° rotatable |
| Application | Motor and feedback connection |
| Installation Benefit | Flexible cable routing |
The connector should be positioned so that cables have adequate clearance and are not subjected to excessive bending or pulling force.
16. Product Advantages
16.1 Low-Inertia Servo Construction
The MPL series is designed around low-inertia servo motor characteristics.
This is beneficial for applications that require rapid changes in speed.
The lower rotational inertia can help reduce acceleration and deceleration response time when the motor is properly matched with the load.
16.2 Multi-Turn Feedback
The multi-turn encoder provides an important advantage for applications involving multiple motor revolutions.
This is particularly useful for linear actuators, screw-driven mechanisms, and positioning systems.
16.3 Compact Mechanical Design
The 115 mm frame provides a compact industrial motor format relative to the application’s output.
The compact design can help simplify machine integration.
16.4 Flexible Connector Orientation
The 180-degree rotatable right-angle connector provides flexibility during machine assembly.
This can be particularly useful where cable routing space is limited.
16.5 Electric-Cylinder Compatibility
The X225 designation is directly associated with an electric-cylinder replacement application.
This makes it useful for maintenance, replacement, and modernization work involving compatible actuator systems.
16.6 No Integrated Brake
Although the lack of a brake is not an advantage for every application, it can be beneficial when the machine does not require motor-mounted mechanical holding.
It avoids unnecessary brake hardware in applications where the mechanical system already provides the required holding function.
16.7 400 V-Class Servo Architecture
The motor belongs to a 400 V-class servo family suitable for industrial motion systems using compatible high-voltage servo drives.
17. Typical Applications
Packaging Machinery
Packaging equipment often requires controlled positioning, rapid movement, and repeated motion cycles.
The MPL-B420F-M-X225 can be used in suitable packaging axes where its speed, power, feedback, and mechanical interface meet the application requirements.
Possible applications include:
- Product positioning
- Feeding systems
- Indexing
- Cutting
- Sealing
- Transfer mechanisms
- Linear actuators
Electric Cylinders
Electric-cylinder systems are one of the most relevant applications for the X225 configuration.
The motor can drive a ball screw or other mechanical transmission to produce controlled linear movement.
Typical applications include:
- Pressing
- Clamping
- Lifting
- Pushing
- Pulling
- Linear positioning
- Automated fixtures
- Material handling
Automated Assembly Equipment
Assembly machinery often requires precise linear and rotary motion.
The multi-turn feedback system can be useful for applications where the servo axis must maintain accurate position over multiple revolutions.
Material Handling
The motor can be applied to transfer mechanisms, positioning systems, conveyors, and automated material-handling equipment.
Where the motor is connected to a ball screw or linear actuator, it can provide controlled linear movement.
Machine Tools
Potential machine-tool applications include:
- Auxiliary feed axes
- Positioning mechanisms
- Tool movement
- Automated fixtures
- Clamping systems
- Material positioning
The actual suitability depends on required torque, speed, load inertia, and mechanical interface.
Industrial Automation
The motor can be used in general industrial automation systems requiring closed-loop servo control.
Examples include:
- Indexing systems
- Automated positioning
- Linear axes
- Rotary axes
- Transfer equipment
- Automated fixtures
- Production machinery
18. Application Suitability
| Application | Suitability | Main Reason |
|---|---|---|
| Electric cylinders | Very suitable | X225 replacement configuration |
| Linear positioning | Suitable | Multi-turn feedback |
| Automated assembly | Suitable | Closed-loop positioning |
| Packaging | Suitable | Servo-controlled motion |
| Material handling | Suitable | Controlled movement |
| Machine automation | Suitable | Servo feedback |
| Machine-tool auxiliary axes | Application-dependent | Speed and load must be checked |
| Vertical axis | Requires engineering evaluation | No integrated brake |
| Heavy continuous-load application | Requires sizing study | 1.45 kW rating must be considered |
| High-speed 5000 RPM axis | Not the primary configuration | X225 is approximately 3150 RPM maximum |
19. Detailed Mechanical Parameter Table
| Parameter | Specification |
|---|---|
| Model | MPL-B420F-M-X225 |
| Frame Size | 115 mm |
| Magnet Stack | 2 in. |
| Magnet Stack Metric | 50.8 mm |
| Mounting Type | Flange-mounted |
| Shaft Key | None |
| Shaft Seal | None in X225 configuration |
| Brake | None |
| Connector | Circular DIN |
| Connector Orientation | Right-angle |
| Connector Rotation | 180° |
| Motor Weight | Approximately 2.8 kg |
| Frame Dimension | 115 mm |
| Stack Dimension | Approximately 50.8 mm |
| Overall Length | Configuration-dependent |
| Overall Width | Configuration-dependent |
| Overall Height | Configuration-dependent |
| Complete Mounting Envelope | Refer to applicable mechanical drawing |
The 115 mm frame and 2-inch stack should be used as the principal catalog dimensions; they should not be treated as the complete outside dimensions of the assembled motor.
20. Detailed Performance Table
| Parameter | Specification |
|---|---|
| Model | MPL-B420F-M-X225 |
| Rated Power | 1.45 kW |
| Maximum Speed | 3150 RPM |
| Voltage | 460 V AC |
| Voltage Class | 400 V |
| Phase | 3-phase |
| Frequency Range | 0–210 Hz |
| Feedback | Multi-turn high-resolution encoder |
| Brake | None |
| Frame | 115 mm |
| Stack | 50.8 mm |
| Weight | Approximately 2.8 kg |
The available product listings consistently identify the X225 configuration as approximately 1.45 kW, 3150 RPM maximum, 460 V AC, 3-phase, and approximately 2.8 kg.
21. Five Closely Related Models
The following models are closely related to the MPL-B420F-M-X225 and are useful when comparing actuator and servo-motor configurations.
| Model | Motor Family | Feedback | Brake | Frame | Stack / Application Parameter |
|---|---|---|---|---|---|
| MPL-B330F-M-X223 | MPL-B330F | Multi-turn high-resolution | None | 100 mm class | 10 mm/rev actuator application |
| MPL-B330F-M-X224 | MPL-B330F | Multi-turn high-resolution | 24 V DC | 100 mm class | 10 mm/rev actuator application |
| MPL-B420F-M-X225 | MPL-B420F | Multi-turn high-resolution | None | 115 mm | 20 mm/rev actuator application |
| MPL-B420F-M-X226 | MPL-B420F | Multi-turn high-resolution | 24 V DC | 115 mm | 20 mm/rev actuator application |
| MPL-B220F-V-X221 | MPL-B220F | Configuration-specific | None | 75 mm class | 12.7 mm/rev actuator application |
The replacement-motor documentation identifies these X-series motors with specific electric-cylinder configurations, including X223/X224 for B330F and X225/X226 for B420F.
22. MPL-B420F-M-X225 vs. MPL-B420F-M-X226
The MPL-B420F-M-X226 is the closest related model to the X225.
The two configurations share the same general B420F motor family and electric-cylinder application, while the principal difference is the brake.
| Parameter | MPL-B420F-M-X225 | MPL-B420F-M-X226 |
|---|---|---|
| Motor Family | B420F | B420F |
| Feedback | Multi-turn high-resolution | Multi-turn high-resolution |
| Frame | 115 mm | 115 mm |
| Stack | 2 in. | 2 in. |
| Application | Electric cylinder | Electric cylinder |
| Ball Screw Pitch | 20 mm/rev | 20 mm/rev |
| Brake | None | 24 V DC |
| Main Use | Non-braked actuator | Braked actuator |
The replacement documentation specifically associates X225 with the no-brake configuration and X226 with the 24 V brake version.
23. MPL-B330F-M-X223 and X224
The B330F X-series provides a smaller related actuator motor configuration.
| Model | Feedback | Brake | Ball Screw Pitch | Application |
|---|---|---|---|---|
| MPL-B330F-M-X223 | Multi-turn high-resolution | None | 10 mm/rev | Electric-cylinder application |
| MPL-B330F-M-X224 | Multi-turn high-resolution | 24 V DC | 10 mm/rev | Electric-cylinder application |
The B330F versions use a smaller frame class than the B420F versions and are associated with a 10 mm/rev actuator screw configuration.
24. MPL-B220F-V-X221 and X222
The B220F configurations provide another related electric-cylinder motor size.
| Model | Feedback Configuration | Brake | Ball Screw Pitch | Application |
|---|---|---|---|---|
| MPL-B220F-V-X221 | V-series feedback configuration | None | 12.7 mm/rev | Electric cylinder |
| MPL-B220F-V-X222 | V-series feedback configuration | 24 V DC | 12.7 mm/rev | Electric cylinder |
These configurations provide a smaller actuator-oriented alternative to the B420F X225/X226 pair.
25. Five Representative Same-Brand Models
For comparison with other commonly encountered models from the same brand, the following MPL servo motors provide different output levels and speed characteristics.
These are representative models rather than a ranking of popularity.
| Model | Speed | Continuous Torque | Peak Torque | Power | Approx. Weight | Frame / Size Reference |
|---|---|---|---|---|---|---|
| MPL-B310P | 5000 RPM | 1.58 Nm | 3.61 Nm | 0.77 kW | 2.7 kg | Compact MPL frame |
| MPL-B320P | 5000 RPM | 3.05 Nm | 7.91 Nm | 1.5 kW | 3.7 kg | Compact MPL frame |
| MPL-B330P | 5000 RPM | 4.18 Nm | 11.1 Nm | 1.8 kW | 4.6 kg | 100 mm class |
| MPL-B420P | 5000 RPM | 4.74 Nm | 13.5 Nm | 1.9 kW | 4.3 kg | Larger MPL frame |
| MPL-B430P | 5000 RPM | 6.55 Nm | 19.8 Nm | 2.2 kW | 5.5 kg | Larger MPL frame |
Published MPL motor selection data gives the torque, speed, power, inertia, and weight values shown for these representative B-series models.
26. MPL-B310P
The MPL-B310P is a lower-output member of the MPL servo motor family.
It has a rated speed of 5000 RPM, approximately 1.58 Nm continuous torque, approximately 3.61 Nm peak torque, and approximately 0.77 kW output.
Its published weight is approximately 2.7 kg.
This model is useful where the required servo-axis torque is substantially lower than the B420F-M-X225 application.
| Parameter | Specification |
|---|---|
| Model | MPL-B310P |
| Speed | 5000 RPM |
| Continuous Torque | 1.58 Nm |
| Peak Torque | 3.61 Nm |
| Power | 0.77 kW |
| Weight | 2.7 kg |
27. MPL-B320P
The MPL-B320P provides more torque than the B310P while retaining a 5000 RPM speed rating.
It provides approximately 3.05 Nm continuous torque and 7.91 Nm peak torque.
Its continuous output is approximately 1.5 kW and its published weight is approximately 3.7 kg.
| Parameter | Specification |
|---|---|
| Model | MPL-B320P |
| Speed | 5000 RPM |
| Continuous Torque | 3.05 Nm |
| Peak Torque | 7.91 Nm |
| Power | 1.5 kW |
| Weight | 3.7 kg |
28. MPL-B330P
The MPL-B330P is a higher-output 5000 RPM B-series motor.
Its published specifications include approximately 4.18 Nm continuous torque, 11.1 Nm peak torque, and 1.8 kW output.
The published motor weight is approximately 4.6 kg.
| Parameter | Specification |
|---|---|
| Model | MPL-B330P |
| Speed | 5000 RPM |
| Continuous Torque | 4.18 Nm |
| Peak Torque | 11.1 Nm |
| Power | 1.8 kW |
| Weight | 4.6 kg |
29. MPL-B420P
The MPL-B420P is particularly relevant because its B420 designation places it in a similar general motor-size family.
It provides approximately 4.74 Nm continuous torque, 13.5 Nm peak torque, 1.9 kW output, and 5000 RPM speed.
Its published weight is approximately 4.3 kg.
| Parameter | Specification |
|---|---|
| Model | MPL-B420P |
| Speed | 5000 RPM |
| Continuous Torque | 4.74 Nm |
| Peak Torque | 13.5 Nm |
| Power | 1.9 kW |
| Weight | 4.3 kg |
30. MPL-B430P
The MPL-B430P provides higher torque than the B420P.
It has a published continuous torque of approximately 6.55 Nm and peak torque of approximately 19.8 Nm.
Its rated speed is 5000 RPM and its continuous power is approximately 2.2 kW.
The published weight is approximately 5.5 kg.
| Parameter | Specification |
|---|---|
| Model | MPL-B430P |
| Speed | 5000 RPM |
| Continuous Torque | 6.55 Nm |
| Peak Torque | 19.8 Nm |
| Power | 2.2 kW |
| Weight | 5.5 kg |
The published B-series selection data supports these torque, power, speed, inertia, and weight figures.
31. B420F-M-X225 Compared with B420P
Although the two models share the B420 designation, they should not be treated as identical motors.
| Parameter | MPL-B420F-M-X225 | MPL-B420P |
|---|---|---|
| Product Family | MPL | MPL |
| Motor Type | Low-inertia servo | Low-inertia servo |
| Speed | Approximately 3150 RPM max. | 5000 RPM |
| Power | Approximately 1.45 kW | 1.9 kW |
| Feedback | Multi-turn high-resolution | Configuration-dependent |
| Application | Electric-cylinder replacement | General servo applications |
| Frame | 115 mm class | B420P frame class |
| Brake | None | Configuration-dependent |
| Primary Difference | Actuator-oriented X225 configuration | General high-speed B420P configuration |
The X225 should therefore be selected according to the actuator and replacement requirements rather than simply because the model begins with B420.
32. Servo Drive Compatibility
The MPL-B420F-M-X225 is intended to operate with a compatible servo-drive system.
The exact drive selection should take into account:
- Motor voltage
- Motor current
- Motor power
- Feedback type
- Encoder compatibility
- Maximum speed
- Continuous torque
- Peak torque
- Regenerative energy
- Motion profile
- Load inertia
- Brake requirements
- Communication architecture
The motor and servo drive should be treated as one complete motion-control system.
Using a physically compatible connector does not by itself guarantee electrical or feedback compatibility.
33. Load Inertia Considerations
Load inertia is particularly important in servo applications.
The motor must accelerate not only its own rotor but also the reflected inertia of the driven load.
In an electric-cylinder application, the effective load can include:
- Ball screw
- Coupling
- Linear carriage
- Workpiece
- Tooling
- External load
- Friction
- Mechanical transmission components
The acceleration requirement determines how much torque is required during dynamic operation.
For this reason, a motor should not be selected solely according to the nominal power rating.
34. Electric-Cylinder Sizing Considerations
For an electric-cylinder system, the motor is connected to a screw-driven mechanism.
The relationship between motor rotation and linear movement depends on the screw pitch.
For the X225 configuration, the associated replacement documentation identifies a 20 mm/rev ball-screw pitch.
This is important because the screw pitch affects:
- Linear speed
- Linear force
- Motor speed
- Motor torque
- Position resolution
- Acceleration requirements
A larger screw pitch generally produces more linear travel per motor revolution, while a smaller pitch can provide greater mechanical advantage for a given motor torque.
35. Linear Motion Applications
When connected to a ball screw, the servo motor can convert rotary motion into controlled linear movement.
Typical applications include:
- Pressing
- Clamping
- Lifting
- Feeding
- Positioning
- Cutting
- Drilling
- Automated assembly
- Testing
- Material transfer
- Packaging
The multi-turn feedback system is especially useful in applications where the motor must rotate through many revolutions while maintaining accurate absolute position information.
36. Thermal Considerations
Servo motors generate heat according to their operating load and duty cycle.
The X225 motor is specified for operation without derating up to approximately 40 °C ambient temperature in the published product description.
Actual thermal performance depends on:
- Ambient temperature
- Mounting arrangement
- Duty cycle
- Continuous load
- Acceleration frequency
- Motor speed
- Cooling conditions
- Machine enclosure
- RMS torque
The machine should therefore be evaluated based on its actual motion profile rather than a single operating point.
37. Installation Considerations
The motor should be mounted securely to a rigid machine structure.
The mounting flange should be properly aligned with the mechanical system.
If the motor is driving a ball screw or coupling, alignment should be checked carefully.
Misalignment can increase:
- Bearing loading
- Vibration
- Mechanical noise
- Coupling wear
- Motor temperature
- Positioning errors
The connector should also be oriented so that the cable has adequate clearance and is not subjected to excessive mechanical stress.
38. Maintenance
Routine inspection of the servo motor and mechanical system should include:
- Motor mounting bolts
- Connector condition
- Motor cable
- Shaft coupling
- Mechanical alignment
- Abnormal vibration
- Bearing noise
- Motor temperature
- Feedback stability
- Actuator backlash
- Ball-screw condition
- Lubrication of the mechanical actuator
The servo motor should not automatically be considered the source of a positioning problem.
In an electric-cylinder system, mechanical wear in the screw, nut, coupling, guide system, or load mechanism can also cause inaccurate positioning.
39. Troubleshooting Guide
| Symptom | Areas to Check |
|---|---|
| Motor does not rotate | Drive enable, power, alarm status, wiring |
| Encoder fault | Feedback cable, connector, encoder compatibility |
| Position error | Feedback, tuning, mechanical backlash |
| Excessive vibration | Alignment, coupling, servo tuning |
| Motor overheats | Load, duty cycle, ambient temperature |
| Poor linear positioning | Ball screw, coupling, mechanical play |
| Unexpected movement | Control sequence, load, mechanical holding |
| Excessive noise | Bearings, coupling, actuator mechanism |
| Insufficient acceleration | Load inertia, current limit, torque requirement |
| Overshoot | Servo tuning and mechanical resonance |
| Slow linear movement | Screw pitch, motor speed, drive configuration |
40. Advantages for Replacement and Maintenance
The X225 configuration is particularly useful when maintaining compatible electric-cylinder systems.
Using the specified replacement motor can reduce the need to redesign the complete actuator.
The motor’s multi-turn feedback, mechanical frame, connector arrangement, and actuator-related configuration are important when replacing an existing motor.
Before ordering a replacement, the complete part number should be checked.
This is especially important for the difference between:
- X225
- X226
- X223
- X224
These part numbers can represent different motor sizes, screw pitches, or brake configurations.
41. Five Related Models – Quick Comparison
| Model | Frame | Feedback | Brake | Screw Pitch | Main Application |
|---|---|---|---|---|---|
| MPL-B330F-M-X223 | 100 mm class | Multi-turn | None | 10 mm/rev | Electric cylinder |
| MPL-B330F-M-X224 | 100 mm class | Multi-turn | 24 V DC | 10 mm/rev | Electric cylinder |
| MPL-B420F-M-X225 | 115 mm | Multi-turn | None | 20 mm/rev | Electric cylinder |
| MPL-B420F-M-X226 | 115 mm | Multi-turn | 24 V DC | 20 mm/rev | Electric cylinder |
| MPL-B220F-V-X221 | 75 mm class | V-series feedback | None | 12.7 mm/rev | Electric cylinder |
The X-series replacement relationships and screw-pitch values are identified in the electric-cylinder replacement documentation.
42. Five Representative Same-Brand Models – Technical Comparison
| Model | Speed | Continuous Torque | Peak Torque | Power | Weight |
|---|---|---|---|---|---|
| MPL-B310P | 5000 RPM | 1.58 Nm | 3.61 Nm | 0.77 kW | 2.7 kg |
| MPL-B320P | 5000 RPM | 3.05 Nm | 7.91 Nm | 1.5 kW | 3.7 kg |
| MPL-B330P | 5000 RPM | 4.18 Nm | 11.1 Nm | 1.8 kW | 4.6 kg |
| MPL-B420P | 5000 RPM | 4.74 Nm | 13.5 Nm | 1.9 kW | 4.3 kg |
| MPL-B430P | 5000 RPM | 6.55 Nm | 19.8 Nm | 2.2 kW | 5.5 kg |
These models provide a useful reference when comparing lower- and higher-output MPL servo motors.
43. Quick Reference Specification
| Parameter | Specification |
|---|---|
| Model | MPL-B420F-M-X225 |
| Brand | Allen-Bradley |
| Product Family | MP-Series |
| Product Series | MPL Low-Inertia Servo Motors |
| Motor Type | Brushless permanent-magnet servo motor |
| Voltage Class | 400 V |
| Nominal Voltage | 460 V AC |
| Phase | 3-phase |
| Rated Power | Approximately 1.45 kW |
| Maximum Speed | Approximately 3150 RPM |
| Frequency | 0–210 Hz |
| Frame Size | 115 mm |
| Magnet Stack | 2 in. / 50.8 mm |
| Feedback | Multi-turn high-resolution encoder |
| Shaft | No factory shaft key |
| Shaft Seal | None in X225 configuration |
| Brake | None |
| Connector | Circular DIN |
| Connector Style | Right-angle |
| Connector Rotation | 180° |
| Motor Weight | Approximately 2.8 kg |
| Ambient Temperature Reference | Approximately 40 °C without derating |
| Application | Servo motion / electric-cylinder replacement |
44. Main Advantages at a Glance
| Advantage | Description |
|---|---|
| Multi-Turn Feedback | Supports absolute position tracking over multiple revolutions |
| Low-Inertia Design | Fast dynamic response |
| 400 V-Class Architecture | Suitable for industrial servo systems |
| 1.45 kW Output | Practical output for actuator and automation applications |
| 3150 RPM Maximum Speed | Suitable for screw-driven and rotary motion |
| 115 mm Frame | Industrial mechanical mounting format |
| 2 in. Stack | Compact F-series motor configuration |
| No Brake | Suitable for systems without integrated motor holding requirements |
| Flexible Connector | 180° rotatable right-angle connector |
| Electric-Cylinder Compatibility | Suitable for specified actuator replacement applications |
| Approximately 2.8 kg | Relatively manageable motor weight |
| Multi-Revolution Positioning | Useful for ball-screw and linear-motion systems |
45. Product Selection Checklist
Before using the MPL-B420F-M-X225, verify the following:
| Selection Item | Required Check |
|---|---|
| Model | MPL-B420F-M-X225 |
| Voltage | 400 V-class / 460 V AC |
| Power | Approximately 1.45 kW |
| Speed | Approximately 3150 RPM maximum |
| Feedback | Multi-turn high-resolution |
| Frame | 115 mm |
| Stack | 2 in. / 50.8 mm |
| Shaft | No factory key |
| Shaft Seal | Verify exact required configuration |
| Brake | None |
| Connector | Circular DIN, right-angle |
| Connector Rotation | 180° |
| Weight | Approximately 2.8 kg |
| Application | Compatible servo system / electric cylinder |
| Screw Pitch | 20 mm/rev for associated X225 actuator application |
| Drive | Compatible servo drive required |
| Load | Torque and inertia must be evaluated |
| Environment | Temperature and enclosure requirements must be verified |
46. Final Product Description
The MPL-B420F-M-X225 is a compact, low-inertia brushless servo motor designed for industrial motion-control and electric-cylinder applications.
The motor belongs to the MPL low-inertia servo motor series and uses a 400 V-class electrical design with a nominal 460 V AC supply, three-phase operation, a 115 mm frame, and a 2-inch magnet stack.
The motor has an approximate 1.45 kW rated output and a maximum operating speed of approximately 3150 RPM.
Its multi-turn high-resolution encoder makes it particularly useful for applications where the motor rotates through multiple revolutions while the control system must maintain accurate position information.
The X225 configuration is also associated with an electric-cylinder application using a 20 mm/rev ball-screw pitch, making it suitable for controlled linear motion through a screw-driven actuator.
The motor does not include an integrated brake in the X225 configuration.
For applications requiring a 24 V DC holding brake, the related MPL-B420F-M-X226 configuration provides the corresponding braked arrangement.
The motor uses a right-angle circular DIN connector with approximately 180 degrees of rotational adjustment, providing useful flexibility when installing the motor in a compact machine.
The X225 configuration also has no factory-installed shaft key and no factory shaft seal according to the configuration information. The exact shaft and sealing arrangement should therefore be verified when replacing an existing motor.
The published motor weight is approximately 2.8 kg, while the principal mechanical dimensions are a 115 mm frame size and 2-inch / approximately 50.8 mm magnet stack.
The MPL-B420F-M-X225 is particularly suitable for electric cylinders, linear positioning equipment, automated assembly machinery, material-handling systems, industrial automation, positioning mechanisms, and other servo-controlled applications where multi-turn feedback and a compact actuator-oriented motor configuration are required.
For replacement applications, the complete part number should always be matched rather than selecting a motor solely from the B420 designation.
The differences between X225 and X226, for example, are important because the X225 configuration does not include the integrated 24 V brake while the X226 configuration does.
Likewise, the B330F X223/X224 configurations use a different motor size and a different associated screw pitch.
In summary, the MPL-B420F-M-X225 can be described as a 400 V-class, 1.45 kW, approximately 3150 RPM, low-inertia brushless servo motor with a 115 mm frame, 2-inch magnet stack, multi-turn high-resolution encoder, no integrated brake, right-angle rotatable circular DIN connector, and approximately 2.8 kg motor weight.
Its strongest application characteristics are its multi-turn feedback capability, actuator-oriented configuration, compact mechanical format, low-inertia servo construction, and compatibility with controlled linear-motion systems.