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The MPL-B430P-MK22AA is a high-performance low-inertia permanent-magnet rotary servo motor designed for industrial motion-control systems.
It belongs to the MP-Series MPL low-inertia servo motor family and is intended for machinery that requires fast acceleration, rapid deceleration, accurate positioning, repeatable movement and stable closed-loop operation.
The motor uses a 400 V AC voltage class, a 115 mm frame, a 3-inch magnetic stack, and a rated speed of approximately 5000 rpm. It is equipped with a multi-turn high-resolution encoder, providing detailed position feedback to the associated servo drive.
A particularly important characteristic of the MPL-B430P-MK22AA is its mechanical configuration. The motor uses a keyless shaft, does not include a shaft seal, uses a circular bayonet connector, and is supplied without an integrated brake.
This configuration makes it a good fit for machinery where high-speed motion and accurate feedback are more important than having an integrated holding brake.
The motor is especially appropriate for high-cycle industrial equipment where the shaft may need to accelerate, decelerate and reposition repeatedly during each production cycle.
| Item | Product Information |
|---|---|
| Model | MPL-B430P-MK22AA |
| Brand | Allen-Bradley |
| Product Family | MP-Series |
| Product Series | MPL Servo Motors |
| Series Type | Low-Inertia Permanent-Magnet Rotary Servo Motor |
| Product Category | Industrial AC Servo Motor |
| Motor Construction | Permanent-Magnet Brushless Servo Motor |
| Application Class | Industrial Motion Control |
| Performance Class | High-Speed Low-Inertia Servo |
The MPL series is designed for applications where servo response and dynamic movement are important.
Compared with a conventional motor intended primarily for continuous rotation, a servo motor is designed to work as part of a complete feedback-controlled system. The motor, encoder, servo drive and controller operate together to control the required motion.
| Parameter | Specification |
|---|---|
| Model | MPL-B430P-MK22AA |
| Brand | Allen-Bradley |
| Product Family | MP-Series |
| Product Series | MPL |
| Motor Type | Low-Inertia Brushless AC Servo Motor |
| Motor Construction | Permanent-Magnet Rotary Motor |
| Voltage Class | 400 V AC |
| Typical System Voltage | 460/480 V AC class |
| Phase | 3 Phase |
| Rated Speed | 5000 rpm |
| Maximum Speed | 5000 rpm |
| Continuous Output | Approximately 2.2 kW class |
| Continuous Stall Torque | Approximately 6.55 N·m |
| Peak Torque | Approximately 19.8 N·m |
| Feedback | Multi-Turn High-Resolution Encoder |
| Encoder Type | Absolute Multi-Turn High-Resolution |
| Encoder Resolution | Approximately 1024 Sin/Cos cycles per revolution, depending on configuration |
| Encoder Interface | Hiperface-type feedback configuration |
| Brake | No Integrated Brake |
| Shaft | Keyless Shaft |
| Shaft Seal | No Shaft Seal |
| Connector | Circular Bayonet Connector |
| Connector Position | Facing Shaft / Right-Angle Arrangement |
| Connector Rotation | Approximately 180° |
| Mounting | IEC Metric |
| Frame Size | 115 mm |
| Frame Size in Inches | 4.53 in |
| Magnetic Stack | 3 inches |
| Magnetic Stack in Millimeters | 76.2 mm |
| Rotor Inertia | Approximately 0.00042 kg·m² class |
| Approx. Weight | Approximately 5.44 kg |
| Weight in Pounds | Approximately 12.0 lb |
| Overall Size | 115 mm frame class |
| Overall Length | Configuration dependent |
| Overall Width | Configuration dependent |
| Overall Height | Configuration dependent |
| Shaft Configuration | Keyless |
| Cooling | Natural motor housing heat dissipation |
| Intended Use | Closed-loop industrial motion control |
The 6.55 N·m continuous torque, approximately 19.8 N·m peak torque, and 5000 rpm speed place this motor in a useful performance range for demanding automated machinery.
The exact continuous output and thermal performance should be considered together with the selected servo drive, load inertia, acceleration profile and duty cycle.
The mechanical dimensions of this model are centered around a 115 mm frame and 3-inch, or 76.2 mm, magnetic stack.
For mechanical design, the mounting pattern, shaft geometry and connector clearance are just as important as the motor body dimensions.
| Mechanical Parameter | Specification |
|---|---|
| Model | MPL-B430P-MK22AA |
| Frame Size | 115 mm |
| Frame Size in Inches | 4.53 in |
| Magnetic Stack Length | 76.2 mm |
| Magnetic Stack Length | 3.0 in |
| Mounting Standard | IEC Metric |
| Shaft Type | Keyless |
| Shaft Seal | None |
| Connector | Circular Bayonet |
| Connector Orientation | Right Angle / Facing Shaft Configuration |
| Connector Rotation | Approximately 180° |
| Approx. Motor Weight | 5.44 kg |
| Approx. Weight in Pounds | 12.0 lb |
| Overall Length | Exact dimension depends on mechanical configuration |
| Overall Diameter / Frame | 115 mm frame class |
| Installation Clearance | Must allow room for connector and cable routing |
| Mechanical Design Reference | 115 mm frame × 76.2 mm magnetic stack |
The approximately 5.44 kg weight is a useful reference for machine design and handling.
For structural calculations, shipping arrangements or replacement work, the physical motor and exact revision should always be checked because packaging weight and motor net weight are not necessarily the same.
The MPL-B430P-MK22AA is designed for industrial machines that require more than simple motor rotation.
A conventional motor may be used to run a conveyor continuously, but a servo motor is generally selected when the machine needs to determine exactly how far the motor moves, how quickly it accelerates, how quickly it stops and how accurately it returns to a target position.
The MPL-B430P-MK22AA provides this capability through its servo construction and multi-turn high-resolution feedback system.
The low-inertia rotor is particularly useful in high-speed applications.
When a motor accelerates, torque is required not only to move the external machine load but also to accelerate the rotor itself. Lower rotor inertia reduces the amount of torque needed to accelerate the motor’s rotating mass.
This can help the machine achieve faster motion changes when the motor and mechanical load are correctly matched.
The 5000 rpm speed rating also makes the motor suitable for equipment where relatively high rotational speed is required.
The low-inertia construction is one of the most important characteristics of the MPL series.
In a high-cycle machine, the motor may repeatedly perform movements such as:
Start → Accelerate → Run → Decelerate → Stop → Reverse → Accelerate Again
If the rotor has excessive inertia, a larger amount of torque is required to change its speed.
A low-inertia motor can respond more readily to these commands.
This makes the MPL-B430P-MK22AA suitable for:
The actual performance still depends on the ratio between motor inertia and load inertia.
A low-inertia motor does not automatically guarantee fast machine movement if the external load is very large or the mechanical transmission is poorly matched.
The multi-turn high-resolution encoder is a major feature of the MPL-B430P-MK22AA.
The feedback system allows the servo controller to determine the motor’s position and movement with much greater detail than a simple open-loop motor system.
The multi-turn function is particularly useful because the feedback system can distinguish between different rotational positions across multiple revolutions.
This is useful in applications where the machine’s mechanical position is important rather than simply knowing the instantaneous motor speed.
Typical applications include:
The encoder information is processed by the compatible servo system so that commanded and actual movement can be compared continuously.
An important characteristic of this particular model is that the MPL-B430P-MK22AA does not have an integrated holding brake.
This makes the model different from several closely related MPL configurations that are available with brake options.
The absence of a brake can be advantageous in applications where:
For vertical axes, however, the absence of an integrated brake should be carefully considered.
If the load can fall or move when servo torque is removed, a suitable external holding or safety mechanism may be necessary.
The motor uses a keyless shaft.
A keyless shaft can provide a compact mechanical interface when used with a suitable clamping coupling or other compatible transmission component.
This arrangement can be useful where:
When replacing an existing motor, the shaft configuration must be checked carefully.
A keyed motor and keyless motor may have similar electrical ratings but are not necessarily mechanically interchangeable.
The MPL-B430P-MK22AA uses a circular bayonet-style connector.
The connector is positioned in a right-angle arrangement and provides flexibility for cable routing.
This is particularly useful in compact machinery where a straight connector could interfere with:
The connector arrangement should be checked before ordering replacement cables because the connector type is an important part of the motor configuration.
Packaging machines are one of the most natural application areas for low-inertia servo motors.
A packaging machine may require a motor to:
The high-speed capability of the MPL-B430P-MK22AA is useful when the machine must complete many production cycles per minute.
The multi-turn feedback system is also useful where precise position control is required.
Printing equipment often requires accurate synchronization between multiple rotating components.
The motor can be considered for:
The servo feedback system helps maintain controlled motion between different machine axes.
Automated assembly equipment often requires repeated, precise movement.
Potential applications include:
The low-inertia construction can be particularly useful where the mechanism moves short distances repeatedly.
The MPL-B430P-MK22AA can also be considered for material-handling equipment that requires controlled movement rather than simple continuous conveyor rotation.
Typical applications include:
Servo motors are frequently used where a machine needs controlled positioning.
Potential uses include:
The actual motor selection depends on the machine’s load, speed and acceleration requirements.
Automated electronics production equipment often requires rapid and repeatable positioning.
The motor may be suitable for:
The motor’s 5000 rpm rated speed makes it suitable for high-speed rotary motion.
This can be beneficial when machine throughput depends on rapid motor movement.
The low-inertia construction allows the motor to respond efficiently to changes in commanded speed.
This is particularly important in applications with frequent acceleration and deceleration.
The motor provides approximately 6.55 N·m continuous stall torque and approximately 19.8 N·m peak torque.
This gives the motor useful acceleration capability for its physical size.
The multi-turn high-resolution encoder provides detailed position feedback.
This makes the motor particularly useful for precision motion systems.
Although the absence of a brake can be a limitation in some machines, it can be an advantage in horizontal applications where a brake is unnecessary.
The motor avoids the additional brake hardware and associated brake wiring.
The 115 mm frame provides a relatively compact package for the motor’s performance class.
This can help when machine space is limited.
The keyless shaft is well suited to compatible clamp-style couplings and precision mechanical transmission systems.
The rotatable right-angle connector can make cable installation easier in compact machine layouts.
The following models are useful for comparison with the MPL-B430P-MK22AA.
| Model | Series | Rated Speed | Continuous Torque | Peak Torque | Power Class | Feedback | Brake | Shaft | Approx. Weight | Dimensions |
|---|---|---|---|---|---|---|---|---|---|---|
| MPL-B310P | MPL | 5000 rpm | Approx. 1.58 N·m | Approx. 3.61 N·m | Approx. 0.77 kW | Encoder feedback | Configuration dependent | Configuration dependent | Approx. 2.7 kg | Smaller frame |
| MPL-B320P | MPL | 5000 rpm | Approx. 3.05 N·m | Approx. 7.91 N·m | Approx. 1.5 kW | Encoder feedback | Configuration dependent | Configuration dependent | Approx. 3.7 kg | Smaller frame |
| MPL-B330P-HK74AA | MPL | 5000 rpm | Approx. 4.18 N·m | Approx. 11.1 N·m | Approx. 1.8 kW | Incremental encoder | 24 V DC | Keyless | Approx. 4.6 kg | Approx. 100 mm class |
| MPL-B420P-HK74AA | MPL | 5000 rpm | Approx. 4.74 N·m | Approx. 13.5 N·m | Approx. 1.9 kW | Incremental encoder | 24 V DC | Keyless | Approx. 4.3 kg | Approx. 100/115 mm class |
| MPL-B430P-HK74AA | MPL | 5000 rpm | Approx. 6.55 N·m | Approx. 19.8 N·m | Approx. 2.2 kW | Incremental encoder | 24 V DC | Keyless | Approx. 5.5 kg class | 115 mm / 76.2 mm stack |
Among these alternatives, the MPL-B430P-HK74AA is the closest comparison in terms of general motor performance.
However, it is important to note that the feedback, brake and other mechanical/electrical configuration details differ.
For a broader comparison, the following models represent useful options within the same general industrial servo-motor range.
| Model | Product Type | Rated Speed | Continuous Torque | Peak Torque | Power | Feedback | Brake | Approx. Weight | Size / Dimensions |
|---|---|---|---|---|---|---|---|---|---|
| MPL-B310P | Low-Inertia Servo Motor | 5000 rpm | 1.58 N·m | 3.61 N·m | 0.77 kW | Incremental | Configuration dependent | ≈2.7 kg | Smaller frame |
| MPL-B320P | Low-Inertia Servo Motor | 5000 rpm | 3.05 N·m | 7.91 N·m | 1.5 kW | Incremental | Configuration dependent | ≈3.7 kg | Smaller frame |
| MPL-B330P-HK74AA | Low-Inertia Servo Motor | 5000 rpm | 4.18 N·m | 11.1 N·m | 1.8 kW | Incremental | 24 V DC | ≈4.6 kg | Approx. 100 mm class |
| MPL-B420P-HK74AA | Low-Inertia Servo Motor | 5000 rpm | 4.74 N·m | 13.5 N·m | 1.9 kW | Incremental | 24 V DC | ≈4.3 kg | Approx. 100/115 mm class |
| MPL-B430P-MJ74AA | Low-Inertia Servo Motor | 5000 rpm | 6.55 N·m | 19.8 N·m | 2.2 kW | Absolute multi-turn | 24 V DC | Approx. 6–6.5 kg | 115 mm / 76.2 mm stack |
The MPL-B430P-MJ74AA is particularly relevant when the application requires a B430P-class motor with a different feedback and brake configuration.
The MPL-B430P-MK22AA, by comparison, is characterized by its multi-turn high-resolution feedback, keyless shaft, bayonet connector and no integrated brake.
| Parameter | MPL-B430P-MK22AA | MPL-B430P-MJ74AA | MPL-B430P-HK74AA |
|---|---|---|---|
| Series | MPL | MPL | MPL |
| Frame | 115 mm | 115 mm | 115 mm |
| Magnetic Stack | 76.2 mm | 76.2 mm | 76.2 mm |
| Rated Speed | 5000 rpm | 5000 rpm | 5000 rpm |
| Power Class | Approx. 2.2 kW | Approx. 2.2 kW | Approx. 2.2 kW |
| Continuous Torque | Approx. 6.55 N·m | Approx. 6.55 N·m | Approx. 6.55 N·m |
| Peak Torque | Approx. 19.8 N·m | Approx. 19.8 N·m | Approx. 19.8 N·m |
| Feedback | Multi-turn high-resolution | Multi-turn high-resolution | Incremental |
| Brake | No Brake | 24 V DC Brake | 24 V DC Brake |
| Shaft | Keyless | Keyed | Keyless |
| Shaft Seal | None | None | None |
| Connector | Circular Bayonet | SpeedTec DIN | SpeedTec DIN |
| Connector Type | Right Angle | Right Angle | Right Angle |
| Connector Rotation | 180° | 180° | 180° |
| Mounting | IEC Metric | IEC Metric | IEC Metric |
| Approx. Weight | 5.44 kg | Approx. 6–6.5 kg | Configuration dependent |
| Main Characteristic | Multi-turn feedback, no brake | Multi-turn feedback with brake | Incremental feedback with brake |
This comparison is useful when selecting between closely related B430P motors.
The motor performance may look similar on paper, but the feedback, brake, shaft and connector configuration can make a major difference when installing the motor in an existing machine.
| Application | Suitable Model Direction | Main Reason |
|---|---|---|
| Small positioning system | MPL-B310P | Lower torque and compact size |
| Medium-duty automation | MPL-B320P | Balanced torque and motor size |
| General indexing | MPL-B330P-HK74AA | Intermediate performance |
| Higher-load indexing | MPL-B420P-HK74AA | Higher torque capability |
| High-speed positioning | MPL-B430P-MK22AA | 5000 rpm and low inertia |
| Absolute multi-turn feedback | MPL-B430P-MK22AA | High-resolution multi-turn feedback |
| Application without brake requirement | MPL-B430P-MK22AA | No integrated brake |
| High-performance B430P application | MPL-B430P-MK22AA | 6.55 N·m continuous torque class |
| Brake-required application | MPL-B430P-MJ74AA / HK74AA | Integrated brake |
| Keyed-shaft requirement | MPL-B430P-MJ74AA | Keyed shaft configuration |
A typical servo system using the MPL-B430P-MK22AA can be organized as follows:
Motion Controller
↓
Servo Drive
↓
MPL-B430P-MK22AA
↓
Coupling / Gearbox / Mechanical Transmission
↓
Machine Load
The controller generates the motion command.
The servo drive converts the command into the electrical current required by the motor.
The motor converts electrical energy into controlled rotary movement.
The encoder provides feedback to the control system.
The controller can then compare the requested movement with the actual motor position and make corrections.
This closed-loop process is fundamental to high-performance servo motion.
A machine using the MPL-B430P-MK22AA may operate according to a sequence such as:
Position Command
↓
Rapid Acceleration
↓
High-Speed Rotation
↓
Controlled Deceleration
↓
Precise Stop
↓
Processing Operation
↓
Return / Reverse
↓
Repeat
The low-inertia motor design is particularly useful for this type of operation.
The machine can potentially reduce the time spent accelerating and decelerating when the motor is correctly matched to the load.
The MPL-B430P-MK22AA can be considered for a broad range of automated industrial equipment.
Typical industries include:
The motor is particularly attractive when the machine requires:
High rotational speed
The 5000 rpm rating provides substantial speed capability.
Rapid acceleration
The low-inertia rotor can help the motor respond quickly to speed commands.
Precise position control
The multi-turn high-resolution encoder provides detailed feedback.
Repeated motion
The motor is suitable for high-cycle machine operation.
Compact installation
The 115 mm frame provides a relatively compact package for its performance class.
No integrated brake requirement
The absence of a brake is suitable for horizontal or externally braked applications.
Keyless coupling
The keyless shaft works well with appropriate clamp-style precision couplings.
The MPL-B430P-MK22AA is not necessarily the best choice for every application.
The absence of an integrated brake should be considered carefully when the motor is used on a vertical axis.
If the load can move downward under gravity when motor power is removed, an external holding or safety mechanism may be necessary.
The keyless shaft also means that the mechanical coupling must be compatible with the shaft arrangement.
The motor should not be selected solely based on its 5000 rpm rating.
The complete application should be evaluated based on:
| Selection Factor | Importance for the MPL-B430P-MK22AA |
|---|---|
| Rated Speed | Determines maximum normal operating speed |
| Continuous Torque | Determines sustained load capability |
| Peak Torque | Determines short-term acceleration capability |
| Load Inertia | Strongly affects dynamic response |
| Rotor Inertia | Influences acceleration performance |
| Feedback Type | Must match the servo control system |
| Brake | This model has no integrated brake |
| Shaft Type | This model uses a keyless shaft |
| Connector | Circular bayonet configuration |
| Mounting | IEC metric |
| Frame | 115 mm |
| Magnetic Stack | 76.2 mm |
| Weight | Approx. 5.44 kg |
| Operating Temperature | Must be considered for thermal performance |
| Duty Cycle | Important for continuous operation |
| Mechanical Load | Must be correctly matched to motor torque |
| Feature | Conventional Motor | MPL-B430P-MK22AA |
|---|---|---|
| Position Feedback | Usually not integrated | High-resolution feedback |
| Position Control | Limited | Designed for servo positioning |
| Speed Control | Basic to moderate | High-performance closed-loop |
| Acceleration Response | Depends on motor/load | Low-inertia servo response |
| Repetitive Indexing | Less suitable | Very suitable |
| Multi-Axis Coordination | More difficult | Designed for coordinated motion |
| Peak Torque Control | Limited | Strong servo capability |
| High-Speed Operation | Application dependent | 5000 rpm servo operation |
| Multi-Turn Position | Not normally available | Available through encoder |
| Machine Cycle Optimization | Limited | Strong potential |
The MPL-B430P-MK22AA is a high-speed industrial servo motor designed for applications that require precise and repeatable motion.
Its key combination is:
5000 rpm
Approximately 6.55 N·m continuous torque
Approximately 19.8 N·m peak torque
Approximately 2.2 kW performance class
115 mm frame
76.2 mm magnetic stack
Multi-turn high-resolution encoder
Keyless shaft
No shaft seal
Circular bayonet connector
No integrated brake
IEC metric mounting
This configuration makes it particularly suitable for high-speed automated equipment where position feedback is important and a motor-mounted holding brake is not required.
| Item | MPL-B430P-MK22AA |
|---|---|
| Model | MPL-B430P-MK22AA |
| Brand | Allen-Bradley |
| Product Family | MP-Series |
| Product Series | MPL |
| Motor Type | Low-Inertia Brushless AC Servo |
| Voltage Class | 400 V AC |
| System Voltage Class | 460/480 V AC |
| Rated Speed | 5000 rpm |
| Continuous Power | Approx. 2.2 kW |
| Continuous Stall Torque | Approx. 6.55 N·m |
| Peak Torque | Approx. 19.8 N·m |
| Feedback | Multi-Turn High-Resolution Encoder |
| Encoder | Absolute Multi-Turn |
| Shaft | Keyless |
| Shaft Seal | None |
| Brake | None |
| Connector | Circular Bayonet |
| Connector Orientation | Right Angle |
| Connector Rotation | 180° |
| Frame Size | 115 mm |
| Magnetic Stack | 76.2 mm |
| Magnetic Stack | 3.0 in |
| Mounting | IEC Metric |
| Rotor Inertia | Approx. 0.00042 kg·m² |
| Approx. Weight | 5.44 kg |
| Main Application | Industrial Motion Control |
| Main Advantage | High-speed, low-inertia precision motion |
For applications requiring a high-speed, low-inertia servo motor with multi-turn high-resolution feedback, the MPL-B430P-MK22AA is a strong choice within the MPL family.
Its 5000 rpm operating capability makes it suitable for fast rotary machinery, while the low-inertia construction helps support rapid acceleration and deceleration.
The multi-turn high-resolution encoder makes the model especially attractive for precision positioning and coordinated motion.
The absence of an integrated brake is the main configuration point that should be considered carefully. For horizontal applications, this may not be a concern. For vertical axes or loads that must remain stationary after power loss, an external holding or safety mechanism may be necessary.
The keyless shaft is another important characteristic. It is well suited to appropriate clamp-style couplings but should be checked carefully during retrofit work.
From the related MPL models, the MPL-B430P-HK74AA is the closest performance comparison, while the MPL-B430P-MJ74AA is another closely related B430P configuration with different shaft, brake and feedback characteristics.
For smaller loads, the MPL-B310P, MPL-B320P and MPL-B330P provide lower-capacity alternatives. For applications requiring higher torque within the same general family, the B430P class is the more appropriate direction.
When replacing an existing motor, the complete catalog number should always be matched. Similar motor frames can have substantially different feedback systems, shaft arrangements, connector types and brake configurations, and these differences can determine whether a motor is actually compatible with the existing servo system.