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MPL-B4530K-HK72AA — Detailed Product Information and Model Selection Guide

1. Product Overview

The MPL-B4530K-HK72AA is a low-inertia AC rotary servo motor from the MP-Series MPL family. It is designed for industrial motion-control applications where fast acceleration, accurate positioning, stable speed regulation, and repeatable dynamic performance are important.

This model belongs to the 460/480 V-class MPL servo motor range and uses a 130 mm frame size with a 76.2 mm magnet stack length. It is rated for operation up to 4000 rpm and uses a 2000-line incremental encoder for feedback.

The motor uses a keyless shaft configuration, has no holding brake, and is equipped with a right-angle SpeedTec DIN connector. The connector arrangement is intended to provide a practical cable connection while allowing the connector position to be adjusted through its rotatable configuration.

The MPL-B4530K-HK72AA is particularly suited to machinery that requires relatively high rotational speed together with low rotor inertia. Typical applications include packaging machinery, material handling equipment, converting machinery, indexing systems, machine tools, printing equipment, assembly equipment, and other automated production machinery.

The product is also recognizable by its model structure. The “B4530K” portion identifies the motor frame and stack configuration, while the remaining characters describe feedback, shaft, connector, brake, and mounting-related characteristics.

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2. Basic Product Identification

Parameter	Specification
Model	MPL-B4530K-HK72AA
Brand	Allen-Bradley
Product Family	MP-Series
Product Series	MPL Low-Inertia Brushless Servo Motors
Product Type	AC Rotary Servo Motor
Motor Technology	Permanent-magnet brushless AC servo motor
Voltage Class	400 V class
Rated Supply Class	460/480 V AC class
Frame Size	130 mm
Magnet Stack Length	76.2 mm
Rated Speed	4000 rpm
Rated Torque	Approximately 8.25 N·m
Feedback	2000-line incremental encoder
Feedback Type	Incremental encoder
Shaft	Keyless shaft
Shaft Seal	No shaft seal
Holding Brake	No brake
Connector	SpeedTec DIN connector
Connector Position	Right-angle connector, rotatable
Mounting	IEC metric mounting arrangement
Mounting Holes	Free mounting holes, FF type
Motor Inertia	Low-inertia design
Approximate Product Weight	6.8 kg
Frame Dimension	130 mm × 130 mm nominal frame
Magnet Stack Dimension	76.2 mm
Overall Length	Dependent on mechanical configuration and dimensional drawing revision
Enclosure	Industrial servo-motor construction
Application Class	Industrial motion control

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3. Detailed Technical Parameters

The following table summarizes the principal technical characteristics of the MPL-B4530K-HK72AA.

Technical Parameter	MPL-B4530K-HK72AA
Model	MPL-B4530K-HK72AA
Brand	Allen-Bradley
Series	MP-Series MPL
Motor Type	Low-inertia brushless AC servo motor
Rated Voltage Class	460 V AC / 480 V class
Voltage Category	400 V class
Rated Speed	4000 rpm
Approx. Rated Torque	8.25 N·m
Frame Size	130 mm
Frame Width	Approximately 130 mm
Frame Height	Approximately 130 mm
Magnet Stack Length	76.2 mm
Feedback	2000-line incremental encoder
Feedback Resolution	2000 lines/revolution
Feedback Technology	Incremental
Shaft Type	Keyless
Shaft Key	Not fitted
Shaft Seal	Not fitted
Brake	No holding brake
Connector Type	SpeedTec DIN
Connector Configuration	Right-angle
Connector Rotation	180° rotatable
Mounting Standard	IEC metric
Mounting Style	FF-type/free mounting holes
Motor Construction	Brushless permanent-magnet servo
Rotor Design	Low inertia
Weight	Approx. 6.8 kg
Dimensional Reference	130 mm frame, 76.2 mm stack
Operating Characteristic	High-speed, low-inertia servo operation
Intended Drive System	Compatible servo drive/control system within the applicable motor family
Typical Control Mode	Position, velocity and torque-oriented motion control
Typical Application	Automated industrial machinery

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4. Dimension Information

For this model, the most important dimensional identification is the 130 mm frame size and the 76.2 mm magnet stack length.

The 130 mm frame dimension is important when checking motor mounting space, flange compatibility, mechanical clearance, and replacement suitability.

The 76.2 mm magnet stack corresponds to the “30” portion of the B4530K model designation and represents the motor’s active magnetic stack length.

Because the motor includes a right-angle connector and the mechanical installation can include different cable-routing requirements, the actual installation envelope should not be judged only from the 130 mm frame size. Connector clearance, shaft clearance, flange clearance, and cable bend radius should also be considered.

Dimension Item	Approximate Value
Model	MPL-B4530K-HK72AA
Frame Size	130 mm
Frame Width	130 mm nominal
Frame Height	130 mm nominal
Magnet Stack Length	76.2 mm
Mounting Reference	IEC metric
Shaft Configuration	Keyless
Connector Type	Right-angle SpeedTec DIN
Connector Rotation	180°
Product Weight	Approx. 6.8 kg
Overall Motor Length	Use applicable mechanical drawing for final installation
Required Connector Clearance	Must be considered during installation
Required Shaft Clearance	Must be determined from machine coupling arrangement

For engineering replacement work, it is recommended to compare the actual flange dimensions, shaft dimensions, connector orientation, mounting-hole pattern, and overall motor envelope rather than selecting a replacement solely from the frame size.

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5. Product Model Naming Explanation

The model number MPL-B4530K-HK72AA contains useful information about the motor configuration.

The MPL designation identifies the low-inertia brushless servo motor family.

The B45 portion identifies the relevant motor frame family, with the frame size corresponding to approximately 130 mm.

The 30 identifies the approximately 76.2 mm magnet stack length.

The K identifies the higher-speed motor configuration associated with the 4000 rpm class.

The H portion identifies the applicable feedback configuration.

The K in the feedback/shaft configuration identifies the keyless-shaft version.

The remaining suffix characters identify the connector, mounting and configuration details.

This is important when selecting a replacement. Two motors may appear almost identical while having different feedback systems, shaft configurations, connector arrangements, brake options, or mounting details.

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6. Product Introduction

The MPL-B4530K-HK72AA is designed around the requirements of high-performance industrial motion control.

Compared with conventional induction motors, a servo motor is intended to operate as part of a closed-loop motion system. The motor works together with a servo drive and feedback device so that the controller can continuously monitor motor position and speed.

The low-inertia design of this model is particularly useful when the machine requires rapid acceleration and deceleration. Lower motor inertia allows the servo system to change speed quickly, provided that the load inertia, mechanical coupling, drive tuning, and application requirements are properly matched.

The 4000 rpm speed capability also makes the motor suitable for applications where production speed is more important than simply producing high continuous torque at low speed.

The 2000-line incremental encoder provides feedback to the servo system. This allows the drive/controller combination to monitor the motor shaft and regulate motion much more accurately than an open-loop motor arrangement.

The keyless shaft is another important configuration feature. A keyless shaft can be advantageous in applications where a suitable clamping coupling or other mechanical connection is preferred.

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7. Main Advantages

7.1 Low-Inertia Design

One of the main strengths of the MPL-B4530K-HK72AA is its low-inertia rotor design.

Low rotor inertia allows the motor to accelerate and decelerate rapidly. This can be especially valuable in machines that repeatedly start, stop, reverse, index, or change speed.

Typical examples include indexing tables, packaging axes, pick-and-place mechanisms, cutting equipment, and other cyclic motion systems.

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7.2 High-Speed Operation

The motor is designed for a rated speed of approximately 4000 rpm.

This provides a useful operating range for applications where machine throughput depends on rapid motor rotation.

High-speed operation is particularly valuable in converting, printing, packaging, winding, material-handling and other production systems where cycle time is a major consideration.

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7.3 Accurate Feedback

The integrated 2000-line incremental encoder provides motion feedback to the control system.

Feedback allows the servo drive to detect changes in motor position and speed and make continuous corrections.

This is essential in applications where the machine must repeatedly reach the same position, maintain a controlled velocity, or coordinate several motion axes.

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7.4 High Dynamic Response

The combination of a low-inertia rotor and servo feedback allows the motor to respond quickly to changing commands.

A properly configured servo system can provide fast acceleration, controlled deceleration, accurate positioning and stable operation under changing mechanical loads.

This makes the motor more suitable for dynamic motion applications than a basic fixed-speed motor.

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7.5 Keyless Shaft

The keyless shaft configuration provides flexibility when selecting the mechanical coupling arrangement.

For applications using clamping couplings or other suitable shaft-hub connection systems, the absence of a shaft key can simplify certain mechanical designs.

The actual coupling must, of course, be selected according to the torque, speed, shaft diameter, axial/radial loading and machine safety requirements.

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7.6 Right-Angle Connector Arrangement

The right-angle SpeedTec DIN connector helps reduce the amount of space required around the rear of the motor compared with some straight connector arrangements.

The connector can also be rotated through its specified range, which provides additional flexibility when routing motor cables.

This can be helpful in compact machine designs where cable routing is restricted.

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7.7 Industrial Servo Construction

The MPL motor family was designed for industrial automation applications.

The motor is intended to operate as part of an integrated motion-control system rather than as a stand-alone general-purpose motor.

This makes it particularly suitable for machine builders and automation engineers who require coordinated control between motors, drives, feedback devices and the machine controller.

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8. Typical Applications

Packaging Machinery

The MPL-B4530K-HK72AA is suitable for packaging machines where rapid indexing, synchronized movement and repeatable positioning are required.

Potential applications include film handling, product indexing, sealing mechanisms, labeling systems, cutting axes, feeding mechanisms and synchronized conveyor systems.

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Material Handling

Servo motors are widely used in automated material-handling systems.

The low-inertia characteristics of this model can be beneficial when conveyors, transfer mechanisms, lifting mechanisms or positioning axes must accelerate and stop repeatedly.

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Printing Machinery

Printing equipment often requires accurate speed regulation and synchronization between multiple rotating or feeding mechanisms.

The feedback-based servo architecture allows the motor to participate in synchronized motion control.

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Converting Machinery

Converting equipment such as slitting, cutting, feeding and web-processing machinery can benefit from high-speed servo operation.

The 4000 rpm speed class and low-inertia characteristics make this type of motor appropriate for dynamic web-processing applications when correctly matched to the mechanical load.

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Assembly Automation

Automated assembly systems often use servo motors for indexing, positioning, insertion, transfer and synchronization.

The MPL-B4530K-HK72AA can be suitable for these applications where the required torque and speed fall within the motor/drive system’s operating envelope.

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Machine Tools

Servo motors are commonly used for machine-tool axes that require controlled acceleration, positioning and velocity.

The MPL-B4530K-HK72AA can be considered for suitable auxiliary or motion axes where its torque, speed and feedback characteristics match the application.

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Robotics and Pick-and-Place Equipment

The low-inertia construction can be useful for repetitive robotic or pick-and-place motion.

Fast changes in velocity are easier to achieve when the motor and load inertia are properly matched.

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9. Recommended Same-Series / Closely Related Models

The following five models are closely related to the MPL-B4530K-HK72AA and can be useful when comparing feedback type, shaft configuration, brake configuration or motor size.

Model	Series	Voltage Class	Speed	Feedback	Shaft / Configuration	Brake	Frame / Stack	Weight
MPL-B4530K-HJ72AA	MP-Series MPL	460 V class	4000 rpm	2000-line incremental encoder	Related 45-frame configuration	No brake	130 mm / 76.2 mm	Approx. 6.8 kg
MPL-B4530K-HK72AA	MP-Series MPL	460 V class	4000 rpm	2000-line incremental encoder	Keyless shaft	No brake	130 mm / 76.2 mm	Approx. 6.8 kg
MPL-B4530K-HK74AA	MP-Series MPL	460 V class	4000 rpm	2000-line incremental encoder	Keyless shaft	Brake configuration	130 mm / 76.2 mm	Approx. 9.5 kg
MPL-B4530K-MK72AA	MP-Series MPL	460 V class	4000 rpm	Multi-turn high-resolution feedback	Keyless shaft	No brake	130 mm / 76.2 mm	Approx. 8.2 kg
MPL-B4530K-RK72AA	MP-Series MPL	460 V class	4000 rpm	Resolver	Keyless shaft	No brake	130 mm / 76.2 mm	Approx. 6.8 kg

Comparison Notes

The MPL-B4530K-HJ72AA is useful for comparison when the same general motor size and speed class are required but the detailed configuration differs.

The MPL-B4530K-HK74AA is particularly relevant when a holding brake is required. The brake version is heavier than the no-brake version, so the additional weight and mechanical requirements should be considered.

The MPL-B4530K-MK72AA is a useful alternative where multi-turn, higher-resolution feedback is preferred.

The MPL-B4530K-RK72AA is relevant for applications that use resolver feedback rather than the incremental encoder arrangement.

Among these alternatives, the MPL-B4530K-HK72AA remains the appropriate choice when the original application specifically requires the 2000-line incremental encoder, keyless shaft, no brake and 4000 rpm configuration.

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10. Five Other Popular / Commonly Used Models from the Same Brand

The following models are useful for broader comparison within the same automation and motion-control product range.

Model	Product Family	Product Type	Main Electrical Rating	Main Function	Dimensions	Weight
2097-V31PR0-LM	Kinetix 350	Single-axis servo drive	120–240 V AC, 1-phase	400 W servo drive	Approx. 238 × 185 × 78 mm	Approx. 1.39 kg
2094-BM02-S	Kinetix 6000	Axis module	360–480 V AC, 3-phase	6.6 kW-class axis module	Approx. 70 × 285 × 255 mm class	Approx. 3.1 kg
MPL-B4530K-SK72AA	MP-Series MPL	AC rotary servo motor	460 V class	4000 rpm servo motor	130 mm frame / 76.2 mm stack	Approx. 6.8 kg
MPL-B4530K-MK72AA	MP-Series MPL	AC rotary servo motor	460 V class	4000 rpm, multi-turn feedback	130 mm frame / 76.2 mm stack	Approx. 8.2 kg
MPL-B4540F-HK72AA	MP-Series MPL	AC rotary servo motor	460 V class	3000 rpm servo motor	130 mm frame / 101.6 mm stack	Approx. 8–9 kg class

2097-V31PR0-LM

The 2097-V31PR0-LM is a compact single-axis servo drive from the Kinetix 350 family.

It is designed for 120–240 V AC single-phase input and provides approximately 400 W of continuous mechanical power.

It supports EtherNet/IP motion integration and is therefore relevant to compact machine axes where networked servo control is required.

Its approximate physical size is 238 × 185 × 78 mm and its weight is approximately 1.39 kg.

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2094-BM02-S

The 2094-BM02-S is an axis module associated with the Kinetix 6000 multi-axis servo platform.

It is intended for higher-power motion applications than a compact 400 W single-axis drive.

Its nominal drive voltage is in the 360–480 V AC three-phase range, with a continuous output power rating around 6.6 kW.

The module weighs approximately 3.1 kg, depending on version and configuration.

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MPL-B4530K-SK72AA

This model is one of the closest comparisons to the MPL-B4530K-HK72AA.

It uses the same general 130 mm frame and 76.2 mm stack arrangement and belongs to the same high-speed MPL motor family.

The main reason for considering this type of alternative is the difference in feedback/configuration coding rather than a fundamental change in motor size.

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MPL-B4530K-MK72AA

The MPL-B4530K-MK72AA is another closely related 4000 rpm MPL motor.

Its important distinction is the multi-turn high-resolution feedback configuration.

This can be advantageous in applications where the control system requires more sophisticated absolute-position information.

The motor remains in the same general 130 mm frame and 76.2 mm stack category.

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MPL-B4540F-HK72AA

The MPL-B4540F-HK72AA belongs to the same general MPL family but uses a longer magnet stack than the B4530K configuration.

The “40” stack designation corresponds to approximately 101.6 mm, compared with 76.2 mm for the B4530K.

The longer stack makes this type of motor useful when additional torque capability is needed while retaining the same general 130 mm frame family.

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11. Direct Comparison with the MPL-B4530K-HK72AA

Feature	MPL-B4530K-HK72AA	MPL-B4530K-HK74AA	MPL-B4530K-MK72AA	MPL-B4530K-RK72AA
Product Family	MP-Series MPL	MP-Series MPL	MP-Series MPL	MP-Series MPL
Frame	130 mm	130 mm	130 mm	130 mm
Stack	76.2 mm	76.2 mm	76.2 mm	76.2 mm
Speed	4000 rpm	4000 rpm	4000 rpm	4000 rpm
Feedback	2000-line incremental	2000-line incremental	Multi-turn high-resolution	Resolver
Shaft	Keyless	Keyless	Keyless	Keyless
Brake	No	Yes	No	No
Connector	SpeedTec DIN	SpeedTec DIN	SpeedTec DIN	SpeedTec DIN
Weight	Approx. 6.8 kg	Approx. 9.5 kg	Approx. 8.2 kg	Approx. 6.8 kg
Best Use	General high-speed servo motion	Applications requiring holding brake	Applications requiring multi-turn feedback	Resolver-based control systems

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12. Key Benefits for Machine Builders

For machine builders, one of the biggest benefits of this motor configuration is the balance between speed, inertia, feedback and mechanical size.

The 130 mm frame gives the motor a substantial mechanical package without moving into a much larger frame class.

The 76.2 mm stack provides a compact configuration that can be useful when machine space is limited.

The 4000 rpm rating makes it suitable for high-cycle applications.

The low-inertia rotor supports fast dynamic response.

The incremental encoder provides the feedback necessary for closed-loop servo control.

The keyless shaft offers additional mechanical coupling flexibility.

The absence of a brake reduces the motor’s weight compared with an otherwise similar brake-equipped configuration and may be desirable where a mechanical holding brake is not required.

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13. Advantages Compared with a Conventional Motor

A conventional induction motor is generally selected for applications where the primary requirement is simply continuous rotation.

A servo motor such as the MPL-B4530K-HK72AA is selected when the machine needs controlled movement.

The servo system can regulate position, velocity and torque, allowing the motor to participate in coordinated machine operations.

For example, if a machine needs to move 250 mm, stop, reverse, move another 150 mm and synchronize its movement with another axis, a servo system is much more suitable than a basic fixed-speed motor.

The MPL-B4530K-HK72AA’s feedback and low-inertia design make it particularly suitable for these dynamic operating conditions.

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14. Selection Considerations

When selecting this motor for a new machine, the motor should not be chosen only according to physical size.

The following factors should be checked:

1. Required continuous torque.
2. Required peak torque.
3. Maximum operating speed.
4. Motor load inertia.
5. Reflected load inertia.
6. Acceleration and deceleration time.
7. Duty cycle.
8. Required positioning accuracy.
9. Required feedback type.
10. Whether a holding brake is required.
11. Shaft diameter and coupling method.
12. Radial and axial shaft loading.
13. Available mounting space.
14. Cable and connector clearance.
15. Servo drive compatibility.
16. Controller and feedback compatibility.
17. Supply voltage.
18. Machine safety requirements.
19. Environmental conditions.
20. Required replacement or retrofit compatibility.

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15. Replacement Selection Advice

If the purpose is to replace an existing MPL-B4530K-HK72AA, the closest replacement should ideally match the following characteristics:

Replacement Requirement	Original Configuration
Model	MPL-B4530K-HK72AA
Product Family	MP-Series MPL
Voltage	460/480 V class
Frame	130 mm
Stack	76.2 mm
Speed	4000 rpm
Feedback	2000-line incremental encoder
Shaft	Keyless
Brake	No brake
Connector	Right-angle SpeedTec DIN
Weight	Approx. 6.8 kg
Motor Type	Low-inertia brushless AC servo

A replacement with the same frame size but a different encoder should not automatically be regarded as a direct replacement.

Similarly, a motor with the same encoder but a brake or different shaft arrangement may require mechanical and control-system changes.

For this reason, the complete catalog number should be compared rather than matching only the first several characters.

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16. Important Difference Between Similar MPL Models

The MPL family contains many visually similar motors.

For example, two models may both use:

• 130 mm frames;
• 76.2 mm magnet stacks;
• 4000 rpm operation;
• similar torque ratings;
• similar connectors.

However, their feedback systems can be different.

One model may use an incremental encoder, another a resolver, and another a multi-turn high-resolution feedback device.

The shaft can also be keyed or keyless.

Some versions include a holding brake while others do not.

Therefore, the final suffix of the model number is technically important and should not be ignored.

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17. Product Advantages Summary

Advantage	Explanation
Low inertia	Supports rapid acceleration and deceleration
4000 rpm operation	Suitable for high-speed production machinery
Incremental encoder feedback	Enables closed-loop motion control
130 mm frame	Provides a compact industrial servo package
76.2 mm stack	Suitable for moderate-to-high dynamic motion requirements
Keyless shaft	Flexible coupling arrangement
No brake	Lower weight and simpler mechanical configuration where braking is unnecessary
Right-angle connector	Helps with cable routing in compact machine layouts
Rotatable connector	Provides additional installation flexibility
Industrial servo construction	Designed for automated machinery and motion applications

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18. Recommended Applications by Machine Type

Machine Type	Suitability	Typical Reason
Packaging machine	Excellent	Fast indexing and repeatable positioning
Labeling machine	Excellent	Accurate speed and position control
Pick-and-place system	Excellent	Low inertia and rapid response
Assembly machine	Excellent	Coordinated positioning
Conveyor positioning axis	Very good	Speed and position control
Printing equipment	Very good	Synchronization and speed regulation
Converting equipment	Very good	High-speed dynamic motion
Material handling	Very good	Repeated acceleration and deceleration
Machine-tool auxiliary axis	Good	Closed-loop position and velocity control
General fixed-speed pump	Usually unnecessary	Servo performance may exceed application requirements

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19. Overall Product Assessment

The MPL-B4530K-HK72AA is best understood as a high-speed, low-inertia industrial servo motor intended for applications where dynamic response and feedback-based motion control are more important than simple continuous rotation.

Its combination of a 130 mm frame, 76.2 mm magnet stack, approximately 8.25 N·m torque, 4000 rpm speed class, 2000-line incremental encoder, keyless shaft and no-brake configuration makes it a particularly useful option for high-cycle automation machinery.

Its strongest characteristics are its dynamic response, high-speed capability, feedback control, compact frame arrangement and flexibility for machine-axis applications.

For an existing machine using this exact motor, the most important replacement criteria are the feedback type, shaft configuration, brake configuration, frame size, stack length, connector arrangement and drive compatibility.

When choosing between related models, the closest alternatives are generally other MPL-B4530K configurations, especially those with the same frame and stack but different feedback or brake options.

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20. Quick Reference

Item	Specification
Model	MPL-B4530K-HK72AA
Brand	Allen-Bradley
Series	MP-Series MPL
Type	Low-inertia brushless AC rotary servo motor
Voltage	460/480 V class
Voltage Class	400 V
Speed	4000 rpm
Torque	Approx. 8.25 N·m
Frame	130 mm
Stack	76.2 mm
Feedback	2000-line incremental encoder
Shaft	Keyless
Brake	No brake
Connector	SpeedTec DIN, right-angle
Connector Rotation	180°
Mounting	IEC metric
Weight	Approx. 6.8 kg
Main Application	Industrial motion control
Typical Machines	Packaging, converting, assembly, material handling, printing and positioning machinery
Main Strength	High-speed, low-inertia dynamic motion
Product Family	MP-Series MPL
Replacement Selection Priority	Match feedback, shaft, brake, frame, stack and connector configuration

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21. Final Recommendation

If the requirement is to maintain the original machine configuration as closely as possible, the MPL-B4530K-HK72AA should be treated as a specific configuration rather than simply a generic 130 mm servo motor.

For the closest same-series comparisons, the MPL-B4530K-HJ72AA, MPL-B4530K-HK74AA, MPL-B4530K-MK72AA, and MPL-B4530K-RK72AA are useful because they illustrate the major differences in feedback and brake configuration.

If the application requires a holding brake, the brake-equipped version is more appropriate.

If the application requires multi-turn position information, the multi-turn high-resolution version should be considered.

If the control architecture uses resolver feedback, the resolver version may be more suitable.

If the original system specifically requires the 2000-line incremental encoder, keyless shaft, no brake and 4000 rpm configuration, then the MPL-B4530K-HK72AA configuration is the closest reference point.

For engineering, purchasing and replacement work, the motor’s exact catalog number should always be matched against the machine’s electrical, mechanical and feedback requirements rather than selecting a model solely because it has the same frame size.