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Allen-Bradley MPL-B4540F-HK74AA Servo Motor – Complete Product Specifications and Technical Overview

1. Product Overview

The Allen-Bradley MPL-B4540F-HK74AA 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 applications that require accurate positioning, stable speed regulation, fast response, high torque density, and reliable continuous operation.

The motor is built around a 130 mm frame with a 101.6 mm magnet stack and operates in the 460 V class. It provides a rated speed of 3000 rpm, continuous torque of approximately 10.2 N·m, peak torque of approximately 27.1 N·m, and a rated motor output of approximately 2.6 kW.

The HK74AA configuration combines a high-resolution feedback arrangement with a keyless shaft and an integrated 24 V DC holding brake. This combination makes the motor particularly suitable for machines that require accurate servo feedback together with positive load holding when the motor is stopped or power is removed.

The motor belongs to the low-inertia MPL family, making it well suited to applications where rapid acceleration and deceleration, short positioning cycles, and precise dynamic response are important.

The overall design emphasizes a compact industrial package, high torque capability, responsive servo performance, and compatibility with modern servo-drive systems.

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2. Brand and Series Information

Item	Specification
Brand	Allen-Bradley
Product Family	MP-Series
Product Series	MPL Low-Inertia Servo Motors
Model	MPL-B4540F-HK74AA
Product Type	AC Rotary Servo Motor
Motor Construction	Brushless Servo Motor
Voltage Class	460 V AC class
Frame Size	45 / 130 mm
Magnet Stack	40 / 101.6 mm
Rated Speed	3000 rpm
Maximum Speed	3000 rpm
Brake	24 V DC integral brake
Shaft Type	Keyless shaft
Feedback	High-resolution encoder configuration
Connector	SpeedTEC DIN
Mounting	IEC metric flange mounting
Mounting Holes	Free mounting holes, Type FF
Product Family Characteristics	Low inertia, high dynamic response

The MPL-B4540F-HK74AA is therefore best classified as an Allen-Bradley MP-Series MPL low-inertia brushless rotary servo motor.

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3. Detailed Technical Parameters

Main Electrical and Mechanical Specifications

Parameter	MPL-B4540F-HK74AA Specification
Model	MPL-B4540F-HK74AA
Brand	Allen-Bradley
Series	MPL Low-Inertia Servo Motors
Product Family	MP-Series
Motor Type	Brushless AC Rotary Servo Motor
Voltage Class	460 V AC
Rated Speed	3000 rpm
Maximum Speed	3000 rpm
Continuous Stall Torque	Approx. 10.2 N·m
Peak Torque	Approx. 27.1 N·m
Rated Output	Approx. 2.6 kW
Rotor Inertia	Approx. 0.00052 kg·m²
Frame Size	45 / 130 mm
Magnet Stack Length	40 / 101.6 mm
Feedback	High-resolution encoder
Shaft	Keyless
Brake	Integral 24 V DC brake
Connector	SpeedTEC DIN
Connector Orientation	Right-angle
Connector Rotation	180° rotatable
Mounting	IEC metric flange mount
Mounting Hole Style	Free mounting holes, Type FF
Operating Temperature	Approx. 0 to 40 °C
Approx. Motor Weight	13 kg
Construction	Low-inertia industrial servo motor

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4. Dimensions and Weight

The dimensional code of this motor is particularly useful when selecting a replacement or checking machine installation space.

The “45” in the model family corresponds to a 130 mm frame size, while the “40” corresponds to a 101.6 mm magnet stack.

Dimension / Mechanical Parameter	Specification
Model	MPL-B4540F-HK74AA
Frame Size	130 mm
Frame Classification	Frame 45
Magnet Stack	101.6 mm
Stack Classification	Stack 40
Mounting Standard	IEC metric
Shaft Configuration	Keyless shaft extension
Mounting Type	Flange mount
Connector Type	SpeedTEC DIN
Connector Style	Right-angle
Connector Rotation	180°
Overall Motor Envelope	Determined by shaft projection, flange geometry, connector position and mounting configuration
Approx. Weight	13 kg

For mechanical replacement work, the 130 mm frame and 101.6 mm stack dimensions should be treated as the primary motor-envelope identifiers. The exact overall length and shaft projection should be checked against the mechanical drawing when designing a new machine or replacing an existing motor.

The approximately 13 kg weight reflects the brake-equipped configuration. The integral brake adds mechanical components compared with the non-brake versions of the same motor family.

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5. Performance Characteristics

The MPL-B4540F-HK74AA is designed around a relatively high torque-to-size ratio.

Its approximately 10.2 N·m continuous torque gives the motor enough continuous output for a wide range of industrial axes, while the approximately 27.1 N·m peak torque capability provides additional acceleration and transient-load capacity.

The motor’s 3000 rpm operating speed makes it suitable for applications requiring a combination of moderate-to-high rotational speed and substantial torque.

The relatively low rotor inertia is another important characteristic. A low-inertia servo motor can accelerate and decelerate the rotor more rapidly than a motor with a substantially higher rotor inertia, assuming the drive and mechanical load are appropriately matched.

This makes the MPL-B4540F-HK74AA particularly suitable for applications involving frequent starts and stops, indexing, positioning, synchronized motion, and rapid changes in commanded speed.

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6. High-Resolution Feedback

The “HK” configuration is intended for a high-resolution feedback arrangement.

Feedback is one of the most important components of a servo motor system because the servo drive uses feedback information to determine motor position and speed and to continuously correct motor operation.

For precision motion applications, high-resolution feedback can provide the servo control system with more detailed information about motor movement.

This is valuable in applications where the machine needs:

• Accurate positioning
• Smooth low-speed movement
• Controlled acceleration and deceleration
• Repeatable indexing
• Electronic gearing
• Electronic camming
• Coordinated multi-axis motion
• Stable speed control
• Precise stopping

The feedback system also allows the servo drive to detect differences between commanded motion and actual motor behavior and make rapid corrections.

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7. Integrated 24 V DC Brake

One of the most important differences between the HK74AA and the HK72AA configuration is the integrated brake.

The MPL-B4540F-HK74AA incorporates a 24 V DC brake.

The brake is primarily intended for holding the motor or mechanical load when the motor is stopped. This can be particularly useful on vertical axes, lifting mechanisms, positioning mechanisms, and machinery where the load should not freely move when servo torque is removed.

Typical examples include:

• Vertical positioning axes
• Lifting mechanisms
• Z-axis applications
• Material handling systems
• Automated assembly equipment
• Vertical indexing systems
• Machines where a load must remain stationary during shutdown

The brake should not normally be treated as the primary means of dynamic stopping during normal servo motion. Servo control and the drive’s braking functions should be used for controlled deceleration, while the mechanical brake is generally intended for holding.

Correct brake sequencing is important. The servo drive, brake control circuit, and mechanical load should be designed so that the brake is not repeatedly forced to absorb large amounts of kinetic energy during normal operation.

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8. Keyless Shaft Design

The MPL-B4540F-HK74AA uses a keyless shaft configuration.

A keyless shaft is useful in servo applications because it allows the machine designer to use suitable shaft-to-hub connection systems without relying on a traditional shaft key.

This can be advantageous when using precision clamping systems, shrink-disc arrangements, or other mechanical coupling methods.

A properly selected keyless coupling can provide:

• Accurate shaft alignment
• Good concentricity
• Reduced backlash
• Secure torque transmission
• Convenient coupling installation
• Suitable mechanical performance for precision servo applications

The actual coupling method should always be selected according to the shaft diameter, transmitted torque, speed, duty cycle, and machine safety requirements.

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9. SpeedTEC DIN Connector

The motor uses a SpeedTEC DIN connector arrangement.

The right-angle connector configuration is particularly useful where cable routing space around the motor is limited.

The connector is designed to provide a practical connection between the motor and its associated servo-drive wiring.

The connector configuration also provides installation flexibility because the right-angle connector can be rotated through approximately 180°.

This can make a significant difference in compact machines where straight cable routing would interfere with guards, machine frames, covers, or adjacent components.

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10. Low-Inertia Motor Design

The MPL series is designed around low-inertia servo motor technology.

Low rotor inertia is especially valuable when the motor must repeatedly change speed.

For example, in an indexing machine, the motor may accelerate rapidly, reach the required position, decelerate, stop, and then immediately accelerate again.

A lower rotor inertia can reduce the motor’s own resistance to acceleration changes, allowing the servo system to respond more quickly when the drive commands a change in speed.

This characteristic is particularly useful for:

• Pick-and-place machines
• Packaging equipment
• Labeling machines
• Indexing machinery
• High-speed assembly equipment
• Electronic motion systems
• Printing and converting machinery
• Automated inspection equipment

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11. Product Introduction

The Allen-Bradley MPL-B4540F-HK74AA is a 460 V class, 3000 rpm low-inertia brushless AC servo motor intended for industrial motion-control systems.

Its 130 mm frame and 101.6 mm magnet stack provide a compact but relatively powerful motor package.

With approximately 10.2 N·m of continuous torque and approximately 27.1 N·m of peak torque, the motor is suitable for applications requiring both sustained torque and short-duration acceleration performance.

The integral 24 V DC brake adds an important mechanical holding function, particularly for applications in which the load must remain stationary when the servo system is disabled.

The keyless shaft provides flexibility for precision mechanical coupling, while the SpeedTEC DIN right-angle connector helps simplify cable routing in compact machine designs.

Overall, the MPL-B4540F-HK74AA is a practical choice for industrial servo axes where precise feedback, dynamic response, moderate-to-high speed, substantial torque, and mechanical holding capability are required in one motor package.

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12. Main Advantages

12.1 High Torque in a Compact Frame

The approximately 10.2 N·m continuous torque rating provides substantial torque for a motor using a 130 mm frame.

This makes the motor suitable for machine axes where installation space is limited but the application still requires considerable continuous torque.

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12.2 Strong Peak Torque Capability

The approximately 27.1 N·m peak torque rating gives the motor additional short-term torque capacity.

Peak torque can be important during acceleration, rapid positioning, transient load changes, and short high-force portions of a machine cycle.

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12.3 3000 rpm Operating Capability

The 3000 rpm rated speed makes the motor suitable for applications where the machine requires relatively fast rotary motion while maintaining useful torque.

This combination is common in packaging, material handling, assembly, and automated production equipment.

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12.4 Low Rotor Inertia

The approximately 0.00052 kg·m² rotor inertia supports fast acceleration and deceleration.

This makes the motor particularly appropriate for applications with frequent motion changes and short machine cycles.

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12.5 High-Resolution Feedback

The high-resolution feedback configuration supports precise servo control and accurate machine positioning.

It is especially useful when repeatability, smooth movement, and coordinated motion are important.

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12.6 Integral 24 V DC Brake

The built-in brake provides an additional mechanical holding function.

This is especially useful for vertical axes and applications where the load must remain stationary when servo torque is removed.

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12.7 Keyless Shaft

The keyless shaft provides additional flexibility when selecting precision mechanical couplings.

It is well suited to applications where mechanical alignment and secure torque transmission are important.

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12.8 Compact Mechanical Package

The 130 mm frame and 101.6 mm stack provide a relatively compact package for the motor’s torque class.

This can simplify machine integration where available installation space is restricted.

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12.9 Rotatable Right-Angle Connector

The right-angle SpeedTEC DIN connector can be rotated approximately 180°.

This provides greater freedom for cable routing and can simplify installation in compact equipment.

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13. Typical Applications

The MPL-B4540F-HK74AA can be used in a broad range of industrial automation systems.

Application	Suitability	Main Reason
Packaging Machinery	Excellent	Fast indexing and positioning
Cartoning Machines	Excellent	Rapid acceleration and repeatable positioning
Labeling Equipment	Excellent	Accurate speed and position control
Pick-and-Place Systems	Excellent	Low inertia and high dynamic response
Automated Assembly	Excellent	Precise servo positioning
Material Handling	Excellent	Continuous torque and controlled motion
Conveyor Positioning	Very Good	Speed regulation and indexing
Printing Machinery	Very Good	Coordinated speed and position control
Converting Machinery	Very Good	Servo synchronization
Inspection Equipment	Excellent	Repeatable positioning
Machine Tools	Very Good	Controlled rotary motion
Textile Machinery	Very Good	Speed regulation and synchronization
Semiconductor Equipment	Very Good	Precise motion control
Robotics	Very Good	Dynamic response and feedback
Vertical Axes	Excellent	Integral holding brake
Lifting/Positioning Systems	Very Good	Brake-equipped configuration

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14. Application in Packaging Machinery

Packaging equipment frequently requires rapid acceleration, accurate indexing, and repeated start-stop operation.

The low-inertia characteristics of the MPL-B4540F-HK74AA make it suitable for these requirements.

For example, the motor can be used to drive an indexing mechanism, feeding mechanism, cutting axis, sealing mechanism, or synchronized conveyor axis.

The integrated brake is also useful in machinery where a moving mechanism must remain stationary when the machine stops.

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15. Application in Automated Assembly

Automated assembly machines often require repeatable positioning and coordinated movement between several axes.

The high-resolution feedback configuration can support precise servo control, while the low rotor inertia helps the axis respond rapidly to changes in the motion command.

The motor can therefore be considered for rotary positioning systems, transfer mechanisms, indexing tables, tooling systems, and other automated assembly equipment.

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16. Application in Vertical Motion

The integral 24 V DC brake makes this model particularly attractive for vertical motion.

A vertical axis can be affected by gravity even when the motor is not commanded to rotate.

A holding brake provides an additional mechanical means of preventing unwanted movement when the servo system is stopped.

Typical vertical applications include:

• Z-axis machinery
• Lift tables
• Vertical positioning systems
• Automated storage equipment
• Material handling lifts
• Tool positioning mechanisms
• Vertical transfer units

The brake must be properly integrated into the machine safety and control system.

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17. Application in Material Handling

Material-handling systems often need a combination of speed, torque, positioning accuracy, and controlled stopping.

The 3000 rpm operating capability allows the motor to support relatively fast movement, while its continuous and peak torque ratings provide capacity for acceleration and transient loading.

The brake can also provide a useful holding function in vertical or inclined material-handling systems.

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18. Recommended Same-Series or Closely Related Models

The following models are useful alternatives or comparison models within the MPL family.

Model	Voltage Class	Speed	Continuous Torque	Peak Torque	Stack / Frame	Feedback / Configuration	Brake	Approx. Weight
MPL-B4540F-HK74AA	460 V class	3000 rpm	10.2 N·m	27.1 N·m	130 mm / 101.6 mm	High-resolution / keyless	24 V DC	13 kg
MPL-B4540F-HK72AA	460 V class	3000 rpm	10.2 N·m	27.1 N·m	130 mm / 101.6 mm	High-resolution / keyless	No brake	Approx. 9.5 kg
MPL-B4540F-HJ74AA	460 V class	3000 rpm	10.2 N·m	27.1 N·m	130 mm / 101.6 mm	Incremental / keyed	24 V DC	Approx. 13 kg
MPL-B4540F-HJ72AA	460 V class	3000 rpm	10.2 N·m	27.1 N·m	130 mm / 101.6 mm	Incremental / keyed	No brake	Approx. 9.5 kg
MPL-B4530F-HK74AA	460 V class	3000 rpm	Approx. 8.25 N·m	Approx. 20.3 N·m	130 mm / 76.2 mm	High-resolution / keyless	24 V DC	Approx. 10–12 kg class

The first four alternatives are particularly close because they share the same basic B4540F motor platform.

The choice between them is mainly determined by feedback requirements, shaft configuration, and whether a mechanical brake is required.

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19. Detailed Comparison of Related Models

MPL-B4540F-HK72AA

The MPL-B4540F-HK72AA is one of the closest alternatives to the HK74AA.

It uses the same general 130 mm frame and 101.6 mm stack configuration and has similar speed and torque characteristics.

The major difference is that the HK72AA does not incorporate the integral 24 V DC brake.

It is therefore a better choice when the machine does not require a holding brake and the designer wants to reduce motor weight and simplify the mechanical configuration.

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MPL-B4540F-HJ74AA

The MPL-B4540F-HJ74AA is another close alternative.

It retains the same basic B4540F mechanical and performance class but uses an incremental feedback configuration and a keyed shaft.

It also incorporates a 24 V DC brake.

This model is worth considering when the machine architecture specifically calls for incremental feedback and a conventional keyed shaft connection.

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MPL-B4540F-HJ72AA

The MPL-B4540F-HJ72AA is the non-brake counterpart of the HJ74AA configuration.

It provides the same basic 3000 rpm, 10.2 N·m continuous torque and 27.1 N·m peak torque class while using incremental feedback and a keyed shaft.

It is a practical alternative for applications where no motor holding brake is required.

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MPL-B4530F-HK74AA

The MPL-B4530F-HK74AA uses a shorter 76.2 mm stack compared with the 101.6 mm stack of the B4540F.

It is therefore useful when the application requires a more compact motor in the same general frame family and does not require the higher torque capacity associated with the longer B4540F stack.

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20. Five Widely Used Allen-Bradley Models for Comparison

The following models are useful additional references when selecting a servo motor from the same general product family.

Model	Product Series	Voltage Class	Speed	Torque Class	Frame / Stack	Feedback Type	Brake	Approx. Weight
MPL-B4530K-HK72AA	MPL Low-Inertia	460 V class	4000 rpm	8.25 N·m continuous	130 mm / 76.2 mm	High-resolution / keyless	No	Approx. 8–10 kg class
MPL-B4540F-MJ74AA	MPL Low-Inertia	460 V class	3000 rpm	10.2 N·m continuous	130 mm / 101.6 mm	Multi-turn high-resolution	24 V DC	Approx. 13 kg
MPL-B4540F-MJ72AA	MPL Low-Inertia	460 V class	3000 rpm	10.2 N·m continuous	130 mm / 101.6 mm	Multi-turn high-resolution	No	Approx. 9.5 kg
MPL-B4560F-MJ74AA	MPL Low-Inertia	460 V class	3000 rpm	Approx. 14.1 N·m continuous	130 mm / 152.4 mm	Multi-turn high-resolution	24 V DC	Approx. 11.8–13 kg class
MPL-B540K-MJ74AA	MPL Low-Inertia	460 V class	4000 rpm	Approx. 19.4 N·m continuous	165 mm / 101.6 mm	Multi-turn high-resolution	24 V DC	Approx. 15 kg

These models cover several important variations, including higher speed, longer motor stack, higher torque, multi-turn feedback, and larger-frame configurations.

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21. Model Selection Guide

Requirement	Recommended Model	Reason
Need brake + high-resolution feedback	MPL-B4540F-HK74AA	Excellent match
Need high-resolution feedback without brake	MPL-B4540F-HK72AA	Similar performance without brake
Need incremental feedback + brake	MPL-B4540F-HJ74AA	Incremental feedback with holding brake
Need incremental feedback without brake	MPL-B4540F-HJ72AA	Simple non-brake configuration
Need multi-turn feedback + brake	MPL-B4540F-MJ74AA	Multi-turn feedback and brake
Need multi-turn feedback without brake	MPL-B4540F-MJ72AA	Multi-turn configuration without brake
Need shorter motor stack	MPL-B4530K-HK72AA	More compact stack configuration
Need more continuous torque	MPL-B4560F-MJ74AA	Longer stack and higher torque
Need higher speed	MPL-B4530K-HK72AA	4000 rpm class
Need larger torque capacity	MPL-B540K-MJ74AA	Larger frame and higher torque

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22. Why Choose the MPL-B4540F-HK74AA?

The MPL-B4540F-HK74AA is particularly attractive when several requirements must be satisfied at the same time.

First, the motor provides a useful combination of 3000 rpm speed and approximately 10.2 N·m continuous torque.

Second, the low-inertia design supports fast dynamic response.

Third, the high-resolution feedback configuration provides the feedback capability required for precise servo control.

Fourth, the keyless shaft is convenient for precision mechanical coupling.

Finally, the integrated 24 V DC brake makes the model particularly suitable for vertical or gravity-loaded applications.

In other words, the HK74AA is not simply a general-purpose servo motor. Its configuration is especially useful when precision motion and mechanical holding capability are both required.

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23. Servo Drive Integration

The MPL-B4540F-HK74AA should be used as part of a complete servo motion-control system.

The motor itself provides the electromechanical conversion of electrical power into controlled rotary motion, while the servo drive manages current, torque, speed, feedback, acceleration, deceleration, and position control.

When selecting the corresponding drive, the following items should be checked:

• Motor voltage class
• Motor rated current
• Continuous torque requirement
• Peak torque requirement
• Feedback compatibility
• Brake control requirements
• Motor cable compatibility
• Connector configuration
• Required acceleration and deceleration
• Duty cycle
• Regeneration requirements
• Mechanical load inertia
• Vertical-axis requirements

Correct motor-drive matching is essential for achieving the rated performance of the servo system.

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24. Installation Considerations

Before installing the MPL-B4540F-HK74AA, the machine designer should verify the mechanical envelope.

The 130 mm frame and 101.6 mm stack are important installation references.

Clearance should be provided around the motor for:

• Motor connectors
• Power cables
• Feedback cables
• Brake wiring
• Cooling
• Maintenance access
• Shaft coupling
• Motor mounting bolts

The right-angle connector can help reduce cable-routing space, but the final connector orientation should still be planned before installation.

The shaft coupling should be correctly aligned to avoid excessive radial or axial loads.

Improper alignment can increase vibration, bearing load, temperature, and mechanical wear.

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25. Brake Application Considerations

The integrated brake should be used primarily as a holding device.

For a vertical axis, the brake may be engaged when the axis has reached a safe position and the servo system is no longer required to provide holding torque.

The brake should not routinely be used as the only method of stopping a rapidly moving load.

The actual brake-control sequence should be determined according to the machine’s safety design and servo-control architecture.

For safety-critical machinery, additional mechanical and control-system safeguards may be required.

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26. Maintenance Considerations

Servo motors generally require less routine maintenance than many traditional mechanical drive systems, but regular inspection is still important.

Recommended inspection areas include:

• Motor mounting bolts
• Shaft coupling
• Mechanical alignment
• Cable condition
• Connector condition
• Feedback wiring
• Brake wiring
• Motor temperature
• Abnormal vibration
• Unusual noise
• Shaft and coupling wear
• Signs of contamination
• Machine grounding

A motor operating under heavy cycling conditions should be monitored carefully for abnormal temperature rise or vibration.

Unexpected changes in motor temperature, acoustic noise, or positioning accuracy can indicate mechanical, electrical, feedback, or load-related problems.

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27. Environmental and Operating Considerations

The typical operating temperature range for this motor class is approximately 0 to 40 °C.

The motor should be installed in an environment suitable for industrial electrical equipment and protected from conditions that exceed its specified environmental limits.

Particular attention should be given to:

• Excessive ambient temperature
• Water or coolant exposure
• Corrosive chemicals
• Conductive dust
• Excessive vibration
• Oil contamination
• Improper cable routing
• Insufficient ventilation

Actual environmental suitability should always be confirmed against the specific machine installation requirements.

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28. Advantages at a Glance

Feature	Advantage
Low-Inertia Design	Fast acceleration and deceleration
3000 rpm Speed	Suitable for relatively fast machine cycles
10.2 N·m Continuous Torque	Strong continuous mechanical output
27.1 N·m Peak Torque	Good transient and acceleration capability
High-Resolution Feedback	Precise servo control
Keyless Shaft	Flexible precision coupling options
24 V DC Brake	Useful mechanical holding capability
130 mm Frame	Compact industrial package
101.6 mm Stack	Higher torque capability within the frame
SpeedTEC DIN Connector	Convenient industrial connection
Right-Angle Connector	Improved cable-routing flexibility
180° Connector Rotation	Easier machine integration
IEC Metric Mounting	Convenient industrial mechanical installation

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29. Overall Product Assessment

The Allen-Bradley MPL-B4540F-HK74AA is a strong choice for industrial automation systems that require a combination of precision, torque, speed, dynamic response, and mechanical holding.

Its 130 mm frame and 101.6 mm stack provide a practical balance between physical size and torque capability.

The approximately 10.2 N·m continuous torque rating is suitable for a broad range of machine axes, while the approximately 27.1 N·m peak torque capability provides additional capacity for acceleration and short-duration load changes.

The low rotor inertia helps the servo system respond quickly to changes in the motion command.

The high-resolution feedback configuration is suitable for precision positioning and synchronized motion.

The integrated 24 V DC brake is a major advantage for vertical axes and other applications where a load needs to remain mechanically held while the motor is stopped.

The keyless shaft also makes the motor attractive for machines using precision coupling arrangements.

For applications requiring a 460 V class, 3000 rpm, approximately 10.2 N·m continuous torque servo motor with high-resolution feedback and an integral holding brake, the MPL-B4540F-HK74AA represents a well-balanced solution.

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30. Quick Technical Reference

Category	Specification
Brand	Allen-Bradley
Product Family	MP-Series
Series	MPL Low-Inertia Servo Motors
Model	MPL-B4540F-HK74AA
Motor Type	Brushless AC Rotary Servo Motor
Voltage Class	460 V AC
Rated Speed	3000 rpm
Maximum Speed	3000 rpm
Continuous Torque	Approx. 10.2 N·m
Peak Torque	Approx. 27.1 N·m
Rated Power	Approx. 2.6 kW
Rotor Inertia	Approx. 0.00052 kg·m²
Frame Size	130 mm
Stack Length	101.6 mm
Feedback	High-resolution encoder
Shaft	Keyless
Brake	24 V DC integral brake
Connector	SpeedTEC DIN
Connector Type	Right-angle
Connector Rotation	180°
Mounting	IEC metric flange
Approx. Weight	13 kg
Typical Applications	Packaging, assembly, material handling, indexing, inspection, machine tools, printing, robotics and vertical axes

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31. Final Summary

The Allen-Bradley MPL-B4540F-HK74AA is a 460 V class MPL low-inertia brushless servo motor with a 130 mm frame, 101.6 mm magnet stack, 3000 rpm rated speed, approximately 10.2 N·m continuous torque, approximately 27.1 N·m peak torque, high-resolution feedback, keyless shaft, and an integral 24 V DC brake.

Its combination of low inertia, high-resolution feedback, substantial torque, compact industrial dimensions, and mechanical holding capability makes it especially suitable for demanding automated machinery.

The model is particularly well matched to packaging systems, indexing machines, automated assembly equipment, material-handling systems, vertical positioning axes, inspection equipment, printing and converting machinery, and other applications where fast and repeatable servo motion is required.

For a direct replacement, the most closely related models are MPL-B4540F-HK72AA, MPL-B4540F-HJ74AA, MPL-B4540F-HJ72AA, and MPL-B4530F-HK74AA. For applications requiring different feedback arrangements, higher speed, higher torque, or multi-turn feedback, models such as MPL-B4530K-HK72AA, MPL-B4540F-MJ72AA, MPL-B4540F-MJ74AA, MPL-B4560F-MJ74AA, and MPL-B540K-MJ74AA provide useful alternatives within the same broader servo motor family.

When selecting a replacement or new motor, the most important points to verify are voltage class, continuous and peak torque, rated speed, feedback configuration, shaft type, brake requirement, mechanical dimensions, motor weight, cable/connector configuration, and the compatibility of the selected servo drive.