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Allen-Bradley MPL-B4560F-MJ72AH Low-Inertia Servo Motor – Technical Specifications, Applications, Advantages and Model Selection Guide

1. Product Overview

The Allen-Bradley MPL-B4560F-MJ72AH is a high-performance AC rotary servo motor from the MP-Series MPL Low-Inertia Servo Motor family.

It is designed for industrial motion-control systems that require accurate positioning, stable speed regulation, fast acceleration and deceleration, high torque density, and reliable closed-loop feedback.

The motor uses a 130 mm frame and a 152.4 mm magnet stack, placing it in the higher-torque section of the 130 mm MPL frame family.

The motor is rated for approximately 3000 rpm and provides approximately 14.1 N·m of continuous torque and approximately 34.4 N·m of peak torque, with approximately 3.2 kW rated output.

The MJ72AH configuration combines a multi-turn high-resolution absolute encoder, keyed shaft extension, right-angle SpeedTEC DIN connector, and no integrated motor brake.

The AH configuration is also associated with an enhanced certification/configuration variant, making this particular model suitable for applications where additional regulatory or hazardous-area requirements need to be considered.

The motor is intended for use with compatible high-voltage servo-drive systems and is particularly suitable for industrial machinery requiring repeated positioning, acceleration, deceleration and synchronized motion.

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2. Brand and Product Series

Item	Specification
Brand	Allen-Bradley
Product Family	MP-Series
Servo Motor Series	MPL Low-Inertia Servo Motors
Product Type	AC Rotary Servo Motor
Model	MPL-B4560F-MJ72AH
Voltage Class	480 V AC
Rated Voltage	460 V AC class
Motor Frame	130 mm
Magnet Stack	152.4 mm
Rated Speed	3000 rpm
Feedback	Multi-turn high-resolution absolute encoder
Feedback Resolution	1024 Sin/Cos cycles/rev class
Feedback Technology	Hiperface-type multi-turn absolute feedback
Shaft	Keyed shaft extension
Brake	No integrated brake
Connector	SpeedTEC DIN
Connector Configuration	Right-angle
Connector Rotation	180° rotatable
Mounting	IEC metric flange
Mounting Hole Type	Free mounting holes, Type FF
Motor Construction	Brushless permanent-magnet servo motor
Motor Design	Low-inertia
Duty	S1 continuous-duty class
Phase	Three-phase
Primary Application	Industrial servo motion control

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3. Detailed Electrical and Performance Parameters

Parameter	Specification
Model	MPL-B4560F-MJ72AH
Motor Type	Brushless permanent-magnet AC servo motor
Rated Voltage	460 V AC
Voltage Class	480 V AC
Number of Phases	3 phase
Rated Speed	3000 rpm
Maximum Operating Speed	Approx. 3000 rpm class
Continuous Rated Torque	14.1 N·m
Peak Torque	Approx. 34.4 N·m
Continuous Rated Power	Approx. 3.2 kW
Duty Cycle	S1
Rotor Inertia	Approx. 0.00078 kg·m² class
Feedback	Multi-turn high-resolution absolute encoder
Feedback Resolution	1024 Sin/Cos cycles/rev class
Feedback Interface	Hiperface-type
Shaft Type	Keyed
Shaft Seal	No shaft seal in standard configuration
Brake	No brake
Connector	SpeedTEC DIN
Connector Type	Circular industrial connector
Connector Direction	Right angle
Connector Rotation	180°
Frame Size	130 mm
Stack Length	152.4 mm
Operating Temperature	Approx. 0 to 40 °C
Protection Configuration	IP66-class configuration
Mounting	IEC metric flange
Mounting Holes	Free mounting holes, Type FF
Approx. Motor Weight	Approx. 6.8 kg*
Approx. Overall Dimensions	Approx. 305 × 229 × 255 mm class*

*Weight and overall envelope figures can vary between published product listings and packaging/configuration records. The approximately 6.8 kg value should therefore be treated as a reference value rather than a substitute for the final product drawing or shipping documentation.

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4. Mechanical Dimensions and Weight

The MPL-B4560F-MJ72AH uses a 130 mm frame with a 152.4 mm stack.

The 152.4 mm stack is the defining mechanical characteristic of the B4560F motor family and provides greater torque capacity than the shorter B4530F and B4540F configurations.

Mechanical Parameter	Specification
Model	MPL-B4560F-MJ72AH
Frame Size	130 mm
Frame Class	Frame 45
Stack Length	152.4 mm
Stack Class	60
Rated Speed	3000 rpm
Shaft	Keyed shaft extension
Shaft Configuration	Standard keyed shaft
Shaft Seal	No standard shaft seal
Brake	None
Mounting Flange	IEC metric
Mounting Hole Configuration	Free mounting holes, Type FF
Connector	SpeedTEC DIN
Connector Position	Right angle
Connector Rotation	180° rotatable
Approx. Overall Length	Approx. 305 mm class*
Approx. Overall Width	Approx. 229 mm class*
Approx. Overall Height	Approx. 255 mm class*
Approx. Weight	Approx. 6.8 kg*

*The final installation envelope should always be checked against the applicable mechanical drawing. Connector orientation and mounting configuration can affect the actual clearance required around the motor.

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5. Model Number Explanation

The catalog number MPL-B4560F-MJ72AH identifies several important characteristics of the motor.

Model Code	Description
MPL	MP-Series MPL low-inertia servo motor
B	460/480 V-class servo motor family
45	130 mm frame-size class
60	152.4 mm stack length
F	3000 rpm configuration
M	Multi-turn high-resolution absolute encoder
J	Keyed shaft extension
7	SpeedTEC DIN right-angle connector, 180° rotatable
2	No integrated brake
AH	Specific AH configuration / certification variant

The complete catalog number should be used when identifying or replacing the motor.

The final suffix is important because two motors that appear mechanically similar may have different certification, feedback, brake, shaft or electrical configurations.

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6. Product Introduction

The Allen-Bradley MPL-B4560F-MJ72AH is a medium-to-high torque industrial servo motor designed around the low-inertia principles of the MPL family.

Its 130 mm frame and 152.4 mm stack provide a useful combination of torque density and mechanical compactness.

The motor delivers approximately 14.1 N·m continuous torque and approximately 34.4 N·m peak torque.

This allows it to handle heavier machine loads than shorter-stack MPL motors while retaining a relatively compact frame size.

The approximately 3.2 kW continuous power rating places the B4560F in a useful range for industrial automation systems that require more output than 2 kW-class motors but do not require the substantially larger motor packages used for high-power servo axes.

The motor also uses a multi-turn high-resolution absolute feedback system.

This makes the model particularly useful for positioning applications where the motor may rotate through several revolutions during a single machine movement.

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7. Main Technical Characteristics

7.1 130 mm Frame

The motor uses a 130 mm frame.

This frame size provides a practical balance between mechanical size and torque capability.

It is commonly suited to medium-duty industrial servo systems where the motor must provide considerable torque without requiring an excessively large machine mounting structure.

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7.2 152.4 mm Stack

The 152.4 mm stack is one of the most important characteristics of the B4560F configuration.

Compared with the 76.2 mm B4530F and 101.6 mm B4540F configurations, the longer active stack provides greater electromagnetic torque capability.

This makes the B4560F suitable for applications with higher continuous mechanical loads.

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7.3 3000 rpm Rated Speed

The motor operates in the 3000 rpm class.

This is a common industrial servo speed range and provides a good balance between torque and speed.

It is suitable for:

• Ballscrew-driven axes.
• Rotary tables.
• Conveyor positioning.
• Packaging equipment.
• Indexing systems.
• Automated assembly.
• Material-handling systems.
• Machine-tool feed axes.
• Industrial processing equipment.

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8. Continuous Torque

The motor provides approximately 14.1 N·m continuous torque.

Continuous torque is the primary value to consider when evaluating the motor for a sustained machine load.

If a machine requires the motor to operate against a constant load for an extended period, the continuous torque requirement should remain within the motor’s thermal capability.

The 14.1 N·m rating makes this motor particularly suitable for applications where smaller 8 N·m or 10 N·m-class servo motors do not provide enough continuous torque.

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9. Peak Torque

The motor provides approximately 34.4 N·m peak torque.

Peak torque provides additional short-term torque capacity during dynamic operating conditions.

Typical situations include:

• Rapid acceleration.
• Rapid deceleration.
• Direction reversal.
• High-speed indexing.
• Temporary mechanical load increases.
• Overcoming short-duration friction peaks.
• Rapid positioning.

Peak torque should not be treated as a continuous rating.

The actual permissible peak duration depends on the servo drive, motor temperature, machine duty cycle, ambient temperature and motion profile.

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10. 3.2 kW Output

The motor has an approximate 3.2 kW continuous rated output.

This makes it a practical choice for medium-power servo applications.

The 3.2 kW rating allows the motor to occupy a useful position between smaller 2.1–2.6 kW servo motors and larger 5 kW-class motors.

For machine builders, this can reduce the tendency to oversize the motor simply to obtain additional torque capacity.

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11. Multi-Turn Absolute Feedback

The MPL-B4560F-MJ72AH uses a multi-turn high-resolution absolute encoder.

This is particularly important for machine axes that require position information across multiple motor revolutions.

A single-turn encoder provides detailed angular position within one revolution.

A multi-turn encoder adds information about how many revolutions the motor has completed.

This is useful in:

• Ballscrew axes.
• Long-travel positioning systems.
• Rotary positioning mechanisms.
• Packaging equipment.
• Material handling.
• Automated assembly.
• Precision indexing.
• Machine tools.
• Industrial transfer equipment.

The multi-turn feedback arrangement can reduce the need to treat the motor as a simple single-revolution position device.

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12. High-Resolution Feedback Advantages

High-resolution feedback allows the servo drive to monitor motor position and speed accurately.

This supports:

• Precise positioning.
• Smooth speed control.
• Improved motion synchronization.
• Accurate acceleration and deceleration.
• Reduced position error.
• Better repeatability.
• Coordinated multi-axis operation.

The actual positioning accuracy of the complete machine depends on more than encoder resolution.

Mechanical backlash, coupling stiffness, ballscrew accuracy, bearing condition, thermal expansion, load inertia and servo tuning can all affect final machine accuracy.

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13. Keyed Shaft Construction

The MJ72AH uses a keyed shaft.

A keyed shaft is a conventional industrial mechanical interface and is widely used with:

• Gearboxes.
• Couplings.
• Timing pulleys.
• Rotary tables.
• Belt drives.
• Industrial reducers.
• Mechanical transmission systems.

The keyed configuration can be particularly convenient when replacing an older servo motor that already uses a keyed shaft.

It also allows straightforward integration with traditional machine components designed around standard key-and-keyway connections.

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14. No Integrated Brake

The MJ72AH does not include an integrated motor brake.

This makes the configuration suitable for applications where the motor does not need an internal holding brake.

Typical examples include horizontal machine axes.

For vertical axes, a brake may be required to prevent the mechanical load from moving when servo torque is removed.

In such cases, a brake-equipped related configuration such as the MPL-B4560F-MJ74AA may be more appropriate.

The absence of a brake also means that the machine’s stopping and holding strategy must be evaluated separately.

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15. SpeedTEC DIN Connector

The motor uses a right-angle SpeedTEC DIN connector.

The right-angle arrangement can be useful where there is limited space behind the motor.

The connector can be rotated through approximately 180 degrees.

This provides additional flexibility for:

• Cable routing.
• Machine assembly.
• Connector access.
• Adjacent motor installation.
• Compact machine layouts.
• Moving-axis applications.

Proper cable routing remains important, particularly with moving machine components.

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16. IEC Metric Mounting

The motor uses IEC metric flange mounting.

This allows it to be integrated into machine structures using a standardized metric mounting approach.

The free-mounting-hole arrangement provides additional flexibility for mechanical integration.

Before installation, the machine designer should confirm:

• Flange dimensions.
• Bolt-circle dimensions.
• Mounting-hole dimensions.
• Shaft diameter.
• Keyway dimensions.
• Shaft extension.
• Motor length.
• Connector clearance.
• Radial shaft loading.
• Axial shaft loading.

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17. Protection and Industrial Construction

The MJ72AH configuration is associated with an enhanced environmental/protection configuration and is listed in industrial documentation with IP66-class protection.

This provides a stronger level of protection against dust and water exposure than a basic open industrial motor arrangement.

This feature can be useful in applications where the motor is exposed to:

• Industrial dust.
• Machine debris.
• Coolant splash.
• Moisture.
• Washdown-related conditions.

The actual environmental suitability still depends on installation, cable connectors, shaft sealing and the complete machine enclosure.

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18. Main Product Advantages

18.1 High Torque Density

The approximately 14.1 N·m continuous torque rating provides substantial output from a 130 mm frame.

This makes the motor suitable for machine axes with relatively high continuous mechanical loads.

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18.2 High Peak Torque

The approximately 34.4 N·m peak torque capability provides useful dynamic torque reserve.

This is important for machines that accelerate and decelerate frequently.

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18.3 3.2 kW Power Class

The 3.2 kW output rating provides a useful middle ground for industrial automation.

It can handle applications that are beyond the practical range of smaller 2 kW-class motors without immediately moving to a much larger motor family.

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18.4 Multi-Turn Absolute Feedback

The multi-turn encoder is particularly useful for long-travel or multi-revolution positioning applications.

It provides the control system with high-resolution motor-position information across multiple revolutions.

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18.5 Low-Inertia Design

The low-inertia rotor helps the motor respond quickly to changes in commanded speed and position.

This is especially useful in:

• Indexing.
• Pick-and-place.
• Packaging.
• Automated assembly.
• High-cycle material handling.
• Synchronised machine axes.

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18.6 Keyed Shaft

The keyed shaft provides compatibility with many conventional industrial mechanical transmission components.

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18.7 No Brake Configuration

For horizontal axes where a holding brake is unnecessary, the no-brake configuration can simplify the motor arrangement.

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18.8 Flexible Connector Orientation

The 180-degree rotatable right-angle connector provides useful flexibility during machine installation.

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18.9 Enhanced Environmental Protection

The IP66-class configuration is useful in industrial environments where dust and moisture protection are important considerations.

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19. Typical Applications

19.1 Packaging Machinery

The motor can be used in packaging equipment requiring controlled and repeatable motion.

Potential applications include:

• Film feeding.
• Product indexing.
• Cutter positioning.
• Rotary sealing.
• Cartoning.
• Labeling.
• Product transfer.
• Packaging conveyors.
• Indexing mechanisms.

The low-inertia design is useful when the machine repeatedly accelerates and decelerates during each production cycle.

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20. Material Handling

Material-handling systems frequently require accurate positioning and controlled speed.

The motor can be applied to:

• Transfer systems.
• Conveyor positioning.
• Shuttle mechanisms.
• Sorting systems.
• Automated loading.
• Rotary transfer stations.
• Linear positioning mechanisms.

The 14.1 N·m continuous torque rating provides useful capacity for medium-to-high load motion axes.

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21. Automated Assembly

Assembly equipment requires repeatable positioning and controlled motion.

The motor can be used for:

• Component insertion.
• Rotary assembly.
• Tool positioning.
• Workpiece indexing.
• Pick-and-place mechanisms.
• Automated inspection.
• Component transfer.
• Precision positioning stages.

The multi-turn feedback is particularly useful when the mechanical axis requires several motor revolutions to reach the target position.

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22. Machine Tools

The MPL-B4560F-MJ72AH can be considered for selected machine-tool feed and positioning applications.

Potential applications include:

• Feed axes.
• Auxiliary positioning.
• Rotary indexing.
• Tool-changing mechanisms.
• Workpiece positioning.
• Automated material feeding.

The 3000 rpm operating class is suitable for many ballscrew and gearbox-driven axes.

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23. Printing and Converting Machinery

Printing and converting machines require synchronized movement and repeatable speed control.

Possible applications include:

• Web feeding.
• Roller positioning.
• Cutter synchronization.
• Registration systems.
• Material indexing.
• Tension-related motion systems.

The high-resolution feedback system supports precise motor control in multi-axis machines.

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24. Electronics Manufacturing

The motor is suitable for selected electronics-production systems requiring controlled positioning.

Applications may include:

• Component handling.
• Inspection stages.
• Automated assembly.
• Feeder systems.
• Positioning platforms.
• Transfer mechanisms.
• Production-line indexing.

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25. Automotive Manufacturing

Automotive production systems use servo motors for controlled mechanical movement throughout the production process.

Potential applications include:

• Part transfer.
• Automated fixtures.
• Assembly positioning.
• Feeding mechanisms.
• Indexing stations.
• Material handling.
• Auxiliary robotic axes.

The higher torque capacity of the B4560F makes it useful where smaller MPL motors may not provide sufficient continuous output.

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26. Industrial Processing Equipment

The motor can also be used in various industrial processing systems where accurate rotary motion is required.

Potential applications include:

• Material feeding.
• Rotary indexing.
• Cutting mechanisms.
• Positioning systems.
• Forming-machine auxiliary axes.
• Processing rollers.
• Automated transfer mechanisms.

The actual suitability should be determined from the machine’s complete torque-speed-duty-cycle requirements.

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27. Mechanical Integration

When installing the MPL-B4560F-MJ72AH, the mechanical interface should be checked carefully.

The longer 152.4 mm stack makes this motor physically longer than the B4530F and B4540F configurations.

Adequate space should be provided for:

• Motor body.
• Connector.
• Cable bend radius.
• Shaft coupling.
• Maintenance access.
• Mounting bolts.
• Cooling airflow.

The keyed shaft should be matched with a compatible coupling or transmission component.

The coupling should also be evaluated for allowable radial and axial loads.

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28. Electrical Integration

The motor is intended for use in a compatible high-voltage servo system.

The servo drive should be selected according to:

• Motor voltage.
• Motor current.
• Continuous torque.
• Peak torque.
• Feedback type.
• Feedback interface.
• Acceleration requirements.
• Deceleration requirements.
• Duty cycle.
• Machine load inertia.

The multi-turn absolute encoder configuration must be supported by the selected control architecture.

Correct feedback configuration is essential for reliable servo operation.

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29. Thermal Considerations

Although the motor is rated at approximately 3.2 kW, the actual operating temperature depends on the complete machine environment.

Important factors include:

• Ambient temperature.
• Average torque.
• Peak torque frequency.
• Motor speed.
• Duty cycle.
• Installation orientation.
• Machine enclosure.
• Cooling conditions.
• Mechanical load.

A machine that frequently accelerates and decelerates can generate substantial thermal load even when the average speed appears relatively low.

Motor sizing should therefore be based on the complete motion profile rather than only the maximum speed.

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30. Servo Tuning Considerations

The low-inertia construction supports fast dynamic response, but servo tuning should be performed according to the actual machine mechanics.

Important factors include:

• Motor inertia.
• Load inertia.
• Inertia ratio.
• Gear reduction.
• Coupling stiffness.
• Ballscrew characteristics.
• Belt elasticity.
• Mechanical backlash.
• Friction.
• Machine resonance.
• Acceleration rate.
• Deceleration rate.
• Position-loop requirements.

A properly matched mechanical system generally allows the motor to deliver better dynamic performance and more stable positioning.

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31. Recommended Related Models in the Same MPL Series

The following models are closely related to the MPL-B4560F-MJ72AH and are useful when comparing feedback, shaft, brake and torque configurations.

Model	Frame / Stack	Speed	Continuous Torque	Peak Torque	Power	Feedback	Shaft	Brake	Approx. Weight
MPL-B4560F-MJ74AA	130 / 152.4 mm	3000 rpm	14.1 N·m	34.4 N·m	3.2 kW	Multi-turn absolute	Keyed	24 V DC	Approx. 6.8–12 kg*
MPL-B4560F-MK72AA	130 / 152.4 mm	3000 rpm	14.1 N·m	34.4 N·m	3.2 kW	Multi-turn absolute	Keyless	No	Approx. 7–12 kg*
MPL-B4560F-MK74AA	130 / 152.4 mm	3000 rpm	14.1 N·m	34.4 N·m	3.2 kW	Multi-turn absolute	Keyless	24 V DC	Approx. 7–13 kg*
MPL-B4560F-SJ72AA	130 / 152.4 mm	3000 rpm	14.1 N·m	34.4 N·m	3.2 kW	Single-turn high-resolution	Keyed	No	Approx. 7–12 kg*
MPL-B4540F-MJ72AA	130 / 101.6 mm	3000 rpm	10.2 N·m	27.1 N·m	2.6 kW	Multi-turn absolute	Keyed	No	Approx. 6–10 kg*

*Weights shown for related models are practical reference ranges because different product databases may report motor-only weight, packaged weight, or configuration-specific weight differently.

The MPL-B4560F-MJ74AA is the closest brake-equipped alternative.

The MPL-B4560F-MK72AA is the closest keyless-shaft alternative.

The MPL-B4560F-MK74AA combines both a keyless shaft and a 24 V DC brake.

The MPL-B4560F-SJ72AA retains the same basic motor size and torque class while changing the feedback arrangement to single-turn high-resolution feedback.

The MPL-B4540F-MJ72AA is a smaller-stack alternative when approximately 10.2 N·m continuous torque is sufficient.

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32. Five Popular / Widely Used Allen-Bradley Servo Models

Model	Frame / Stack	Speed	Continuous Torque	Peak Torque	Power	Feedback	Shaft	Brake	Approx. Weight
MPL-B4540F-MJ74AA	130 / 101.6 mm	3000 rpm	10.2 N·m	27.1 N·m	2.6 kW	Multi-turn absolute	Keyed	24 V DC	Approx. 9–10 kg
MPL-B4540F-MK74AA	130 / 101.6 mm	3000 rpm	10.2 N·m	27.1 N·m	2.6 kW	Multi-turn absolute	Keyless	24 V DC	Approx. 10–12 kg
MPL-B4560F-MJ74AA	130 / 152.4 mm	3000 rpm	14.1 N·m	34.4 N·m	3.2 kW	Multi-turn absolute	Keyed	24 V DC	Approx. 7–12 kg*
MPL-B540K-MJ72AA	165 / 101.6 mm class	4000 rpm	Approx. 19.4 N·m	Approx. 48.6 N·m	Approx. 5.4 kW	Multi-turn absolute	Keyed	No	Approx. 15 kg
MPL-B4530F-MJ74AA	130 / 76.2 mm	3000 rpm	Approx. 8.25 N·m	Approx. 20.3 N·m	Approx. 2.1 kW	Multi-turn absolute	Keyed	24 V DC	Approx. 7–8 kg

The models above cover several common servo configurations within the same general industrial motion-control family.

The MPL-B4540F-MJ74AA is a useful lower-torque alternative when the machine requires multi-turn feedback and a brake.

The MPL-B4540F-MK74AA is appropriate where a keyless shaft is preferred.

The MPL-B4560F-MJ74AA provides a higher-torque version with an integrated brake.

The MPL-B540K-MJ72AA moves into a larger motor class for applications requiring significantly greater torque and power.

The MPL-B4530F-MJ74AA is a smaller alternative for applications that do not require the full 14.1 N·m continuous torque of the B4560F.

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33. Direct Comparison of the Most Relevant B4560F Models

Parameter	MPL-B4560F-MJ72AH	MPL-B4560F-MJ72AA	MPL-B4560F-MJ74AA	MPL-B4560F-MK72AA
Frame	130 mm	130 mm	130 mm	130 mm
Stack	152.4 mm	152.4 mm	152.4 mm	152.4 mm
Speed	3000 rpm	3000 rpm	3000 rpm	3000 rpm
Continuous Torque	14.1 N·m	14.1 N·m	14.1 N·m	14.1 N·m
Peak Torque	Approx. 34.4 N·m	Approx. 34.4 N·m	Approx. 34.4 N·m	Approx. 34.4 N·m
Power	Approx. 3.2 kW	Approx. 3.2 kW	Approx. 3.2 kW	Approx. 3.2 kW
Feedback	Multi-turn absolute	Multi-turn absolute	Multi-turn absolute	Multi-turn absolute
Shaft	Keyed	Keyed	Keyed	Keyless
Brake	None	None	24 V DC	None
Connector	SpeedTEC DIN	SpeedTEC DIN	SpeedTEC DIN	SpeedTEC DIN
Connector	Right angle	Right angle	Right angle	Right angle
Connector Rotation	180°	180°	180°	180°
Approx. Weight	Approx. 6.8 kg*	Approx. 6.8–12 kg*	Approx. 7–12 kg*	Approx. 7–12 kg*

The MPL-B4560F-MJ72AH and MPL-B4560F-MJ72AA are closely related configurations.

The major distinction is the final AH configuration designation, which is associated with the specific AH version and its applicable certification/configuration characteristics.

The MJ74AA adds a 24 V DC holding brake.

The MK72AA changes the shaft from keyed to keyless.

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34. Application Selection Guide

Machine Requirement	Recommended Model
3.2 kW, multi-turn feedback, keyed shaft, no brake, AH configuration	MPL-B4560F-MJ72AH
3.2 kW, multi-turn feedback, keyed shaft, no brake	MPL-B4560F-MJ72AA
3.2 kW, multi-turn feedback, keyed shaft, 24 V brake	MPL-B4560F-MJ74AA
3.2 kW, multi-turn feedback, keyless shaft, no brake	MPL-B4560F-MK72AA
3.2 kW, multi-turn feedback, keyless shaft, 24 V brake	MPL-B4560F-MK74AA
3.2 kW, single-turn feedback, keyed shaft	MPL-B4560F-SJ72AA
2.6 kW, multi-turn feedback, keyed shaft	MPL-B4540F-MJ72AA
Approx. 5.4 kW, higher-torque application	MPL-B540K-MJ72AA

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35. Key Specifications at a Glance

Feature	Specification
Model	MPL-B4560F-MJ72AH
Brand	Allen-Bradley
Series	MP-Series MPL Low-Inertia Servo Motors
Motor Type	Brushless AC rotary servo motor
Voltage	460/480 V AC class
Frame Size	130 mm
Magnet Stack	152.4 mm
Rated Speed	3000 rpm
Continuous Torque	14.1 N·m
Peak Torque	Approx. 34.4 N·m
Continuous Power	Approx. 3.2 kW
Feedback	Multi-turn high-resolution absolute encoder
Feedback Resolution	1024 Sin/Cos cycles/rev class
Feedback Type	Hiperface-type multi-turn absolute
Shaft	Keyed
Brake	No brake
Connector	SpeedTEC DIN
Connector Configuration	Right angle
Connector Rotation	180°
Mounting	IEC metric
Mounting Holes	Free mounting holes, Type FF
Duty	S1
Phase	3 phase
Operating Temperature	Approx. 0–40 °C
Protection	IP66-class configuration
Approx. Dimensions	Approx. 305 × 229 × 255 mm class
Approx. Weight	Approx. 6.8 kg*

*Reference weight only; verify the exact motor weight against the applicable product documentation or physical nameplate when weight is critical to equipment design.

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36. Important Selection Considerations

When selecting the MPL-B4560F-MJ72AH, the motor should not be evaluated only by its 3.2 kW power rating.

The complete machine motion profile should be considered.

Important parameters include:

• Continuous torque.
• Peak torque.
• Motor speed.
• Load inertia.
• Acceleration.
• Deceleration.
• Duty cycle.
• Operating temperature.
• Feedback requirements.
• Shaft requirements.
• Brake requirements.
• Environmental conditions.
• Connector clearance.
• Mechanical mounting.
• Cable routing.

The motor is particularly attractive when the application requires a combination of high continuous torque, multi-turn absolute feedback and a keyed shaft.

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37. Motor Selection Based on Load

For a relatively light horizontal axis, the B4530F or B4540F may provide sufficient torque.

For a medium-to-high load requiring approximately 14.1 N·m continuous torque, the B4560F is a more suitable choice.

For applications requiring approximately 19 N·m or more continuous torque, a larger frame such as the B540K family may be more appropriate.

The motor should always be selected based on the actual torque-speed curve and duty cycle rather than simply matching the motor’s maximum torque number.

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38. Why Choose the MPL-B4560F-MJ72AH

The MPL-B4560F-MJ72AH is particularly attractive when the machine requires the following combination:

130 mm frame + 152.4 mm stack + 3000 rpm + 14.1 N·m continuous torque + approximately 34.4 N·m peak torque + 3.2 kW output + multi-turn absolute feedback + keyed shaft + no brake.

This combination gives the motor a strong position in medium-to-high torque servo applications.

The multi-turn feedback is particularly valuable for machine axes that travel through multiple motor revolutions.

The keyed shaft is well suited to conventional industrial mechanical transmission systems.

The absence of a brake keeps the configuration focused on applications where an integrated holding brake is not required.

The AH configuration also makes this model relevant when the specific certification or environmental configuration associated with the AH suffix is required by the machine or installation environment.

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39. Overall Product Evaluation

The Allen-Bradley MPL-B4560F-MJ72AH is a high-performance low-inertia servo motor designed for demanding industrial motion-control applications.

Its main specifications are centered around a 130 mm frame, 152.4 mm magnet stack, 3000 rpm speed rating, 14.1 N·m continuous torque, approximately 34.4 N·m peak torque and approximately 3.2 kW continuous output.

The motor uses multi-turn high-resolution absolute feedback, providing detailed position information across multiple motor revolutions.

This makes it especially useful for ballscrew axes, rotary positioning systems, indexing equipment and other machines where the motor may rotate through several revolutions during normal operation.

The keyed shaft provides a conventional mechanical interface for gearboxes, couplings, pulleys and other industrial transmission components.

The no-brake configuration is suitable for applications where a mechanical holding brake is not required.

The right-angle SpeedTEC DIN connector with 180-degree rotation provides useful flexibility for cable routing and machine integration.

The low-inertia construction supports rapid dynamic response and makes the motor well suited to repeated acceleration, deceleration and positioning cycles.

From a motor-selection standpoint, the B4560F is a strong option when a machine requires more torque than the shorter B4530F and B4540F configurations can provide, while still maintaining the compact 130 mm frame architecture.

For applications requiring a holding brake, the MPL-B4560F-MJ74AA is the natural related configuration.

For applications requiring a keyless shaft, the MPL-B4560F-MK72AA is a logical alternative.

For lower torque requirements, the B4540F and B4530F families can provide smaller and lighter solutions.

For significantly higher power requirements, the larger B540K family provides another step upward.

Overall, the MPL-B4560F-MJ72AH is best suited to industrial servo applications where high torque density, 3000 rpm operation, multi-turn absolute positioning, keyed mechanical integration, low-inertia response and the specific AH configuration are important requirements.