Company Information
E-mail		[email protected]
Mobile		+8615980777398
Whatsapp		+8615980777398
WeChat		15980777398

Allen-Bradley MPL-B4530F-SJ72AA Servo Motor

1. Product Overview

The Allen-Bradley MPL-B4530F-SJ72AA is a low-inertia brushless AC servo motor designed for industrial motion-control systems that require accurate positioning, fast response, repeatable operation, and reliable feedback.

It belongs to the MP-Series MPL Low-Inertia Servo Motor family and uses a 460 V AC-class electrical configuration, a 130 mm frame, and a 76.2 mm magnet stack.

The motor is rated at 3000 rpm and provides approximately 8.25 N·m of continuous stall torque and 20.3 N·m of peak torque. Its rated continuous output is approximately 2.1 kW.

A major characteristic of the MPL-B4530F-SJ72AA is its single-turn high-resolution encoder feedback. The feedback system uses a 1024 cycles/revolution sin/cos signal with Hiperface protocol, providing detailed rotor-position information for closed-loop servo control.

The motor also uses a keyed shaft, a SpeedTEC DIN right-angle connector, and a no-brake configuration.

This configuration makes the motor particularly suitable for horizontal servo axes, indexing mechanisms, automated machinery, positioning systems, packaging equipment, assembly machinery, and other applications where high-resolution feedback is important but an integrated holding brake is not required.

---

2. Brand and Product Series

Item	Description
Brand	Allen-Bradley
Product Family	MP-Series
Servo Series	MPL Low-Inertia Servo Motors
Product Type	Brushless AC Rotary Servo Motor
Motor Construction	Permanent-Magnet Brushless Servo Motor
Voltage Class	400 V AC class
Motor Voltage	460 V AC
Frame Size	Frame 45 / 130 mm
Magnet Stack	30 / 76.2 mm
Rated Speed	3000 rpm
Feedback	Single-turn high-resolution encoder
Feedback Resolution	1024 cycles/revolution
Feedback Protocol	Hiperface
Shaft Configuration	Keyed shaft
Brake	No brake
Connector	SpeedTEC DIN
Connector Orientation	Right-angle
Connector Rotation	180° rotatable
Mounting	IEC Metric Flange
Mounting Hole Style	Free mounting holes / Type FF
Shaft Seal	No shaft seal
Continuous Stall Torque	8.25 N·m
Peak Torque	20.3 N·m
Rated Continuous Power	Approximately 2.1 kW
Rotor Inertia	Approximately 0.00040 kg·m²
Maximum Operating Temperature	Approximately 40 °C
Approximate Weight	3.6–3.7 kg

The product belongs to the low-inertia section of the MPL servo family, which is designed for applications where dynamic response and repeated acceleration/deceleration are important.

---

3. Main Technical Parameters

Parameter	MPL-B4530F-SJ72AA Specification
Model	MPL-B4530F-SJ72AA
Brand	Allen-Bradley
Product Series	MP-Series MPL
Series Type	Low-Inertia Servo Motor
Motor Type	Brushless AC Rotary Servo
Voltage Class	400 V AC
Motor Voltage	460 V AC
Rated Speed	3000 rpm
Maximum Speed	3000 rpm
Continuous Stall Torque	8.25 N·m
Peak Torque	20.3 N·m
Rated Continuous Power	Approximately 2.1 kW
Frame Size	Frame 45
Frame Diameter	130 mm
Magnet Stack Length	76.2 mm
Feedback Type	Absolute single-turn high-resolution encoder
Feedback Resolution	1024 cycles/revolution
Feedback Protocol	Hiperface
Shaft	Keyed
Shaft Seal	No shaft seal
Brake	No brake
Connector	SpeedTEC DIN
Connector Style	Right-angle
Connector Rotation	180° rotatable
Mounting Flange	IEC Metric
Mounting Holes	Free mounting holes / Type FF
Rotor Inertia	Approx. 0.00040 kg·m²
Maximum Operating Temperature	Approx. 40 °C
Approximate Weight	3.6–3.7 kg
Typical Application	Industrial servo motion control

---

4. Dimensions and Mechanical Specifications

The MPL-B4530F-SJ72AA uses a 130 mm frame and a 76.2 mm magnet stack.

The 130 mm frame provides a relatively compact mounting envelope while maintaining a useful torque rating for industrial servo applications.

The 76.2 mm stack length corresponds to the “30” designation in the model number.

Mechanical Parameter	Specification
Model	MPL-B4530F-SJ72AA
Frame Size	45
Frame Diameter	130 mm
Magnet Stack	76.2 mm
Mounting Standard	IEC Metric
Mounting Style	Flange Mount
Mounting Hole Type	Free Mounting Holes / Type FF
Shaft Configuration	Keyed
Shaft Seal	None
Brake	None
Connector	SpeedTEC DIN
Connector Position	Right-angle
Connector Rotation	180°
Approximate Weight	3.6–3.7 kg

The exact physical installation dimensions should always be checked against the applicable mechanical drawing when designing or replacing a motor.

The overall mounting envelope is not determined only by frame diameter and stack length. Shaft projection, flange dimensions, connector clearance, cable bending radius, and machine-side coupling dimensions should also be considered.

---

5. Electrical and Performance Characteristics

The MPL-B4530F-SJ72AA is rated for 3000 rpm operation.

Its continuous stall torque is approximately 8.25 N·m, while its peak torque capability is approximately 20.3 N·m.

This gives the motor a substantial temporary torque margin for acceleration, deceleration, indexing, and short-duration load changes.

Performance Parameter	Value
Model	MPL-B4530F-SJ72AA
Rated Speed	3000 rpm
Maximum Speed	3000 rpm
Continuous Stall Torque	8.25 N·m
Peak Torque	20.3 N·m
Rated Continuous Power	Approx. 2.1 kW
Rotor Inertia	Approx. 0.00040 kg·m²
Voltage Class	400 V AC
Nominal Voltage	460 V AC
Feedback	Single-turn high-resolution encoder
Feedback Resolution	1024 cycles/revolution
Brake	No
Weight	Approx. 3.6–3.7 kg

The combination of relatively low rotor inertia and available peak torque makes this motor suitable for machines that repeatedly change speed and position.

---

6. Single-Turn High-Resolution Encoder

The feedback system is one of the most important characteristics of the MPL-B4530F-SJ72AA.

The motor uses an absolute single-turn high-resolution encoder.

The feedback system is specified as 1024 cycles/revolution sin/cos with Hiperface protocol.

This type of feedback provides the servo drive with detailed information about the motor’s angular position.

In a closed-loop servo system, the drive continuously compares commanded movement with actual motor feedback.

This allows the control system to regulate:

• Position.
• Speed.
• Acceleration.
• Deceleration.
• Torque response.
• Position settling.

The high-resolution feedback is especially useful for applications where smooth motion and accurate positioning are more important than simply maintaining a constant rotational speed.

---

7. Advantages of High-Resolution Feedback

The high-resolution encoder configuration offers several practical benefits.

Improved Position Control

More detailed position feedback gives the servo controller more information with which to regulate the motor.

Smooth Motion

High-resolution feedback can help the servo system maintain smooth movement during acceleration, deceleration, and low-speed positioning.

Better Repeatability

For machines performing the same movement repeatedly, accurate feedback can contribute to consistent positioning.

Faster Servo Response

Detailed feedback allows the controller to detect changes in actual motor position and speed quickly.

Suitable for Precision Machinery

The encoder configuration is useful for applications involving indexing, positioning, synchronized motion, and controlled mechanical movement.

---

8. Keyed Shaft Configuration

The MPL-B4530F-SJ72AA uses a keyed shaft.

A keyed shaft is a familiar mechanical interface for industrial machinery.

A suitable shaft key and coupling can transfer torque between the motor and the driven mechanism.

The keyed configuration is particularly useful when replacing an existing servo motor that already uses a keyed mechanical connection.

Shaft Characteristic	MPL-B4530F-SJ72AA
Shaft Type	Keyed
Shaft Seal	No shaft seal
Mechanical Interface	Keyed coupling
Brake	No brake
Typical Application	Horizontal servo axes
Main Benefit	Familiar and widely used mechanical connection

When replacing another motor, the shaft diameter, key dimensions, shaft extension, coupling dimensions, and allowable radial and axial loads should be checked before installation.

---

9. No-Brake Configuration

The MPL-B4530F-SJ72AA is a no-brake motor.

This configuration is normally more appropriate for applications where the motor does not need to mechanically hold a gravity-loaded axis after the servo is disabled.

Typical examples include:

• Horizontal conveyors.
• Rotary indexing tables.
• Horizontal positioning axes.
• Packaging mechanisms.
• Material feeding systems.
• Assembly equipment.
• Machine-tool auxiliary axes.

For vertical or gravity-loaded applications, a brake-equipped motor may be a more appropriate configuration.

---

10. SpeedTEC DIN Connector

The motor uses a SpeedTEC DIN connector in a right-angle configuration.

The connector can be rotated through approximately 180°, which provides greater flexibility when routing cables around the machine.

This is useful when the servo motor is installed in a restricted mechanical space.

The rotatable connector can help with:

• Cable routing.
• Machine enclosure design.
• Connector clearance.
• Cable bending radius.
• Motor installation orientation.
• Maintenance access.

The connector arrangement is therefore more than a simple electrical connection; it can have a direct effect on machine layout.

---

11. Low-Inertia Motor Design

The MPL series is designed around a low-inertia motor concept.

In a conventional motor application, a motor may spend much of its operating time at a relatively constant speed.

A servo motor often works differently.

It may repeatedly:

• Accelerate.
• Decelerate.
• Stop.
• Reverse.
• Move to a position.
• Hold position.
• Start another cycle.

Because of this operating pattern, rotor inertia becomes an important design consideration.

The approximately 0.00040 kg·m² rotor inertia of the MPL-B4530F-SJ72AA helps the motor respond efficiently to changes in command.

This makes the motor particularly useful for short-cycle automation.

---

12. Product Introduction

The MPL-B4530F-SJ72AA is a medium-power industrial servo motor designed for machine automation.

Its 3000 rpm rating and approximately 8.25 N·m continuous torque place it in a useful range for a wide variety of servo axes.

The motor combines:

• Low-inertia construction.
• High-resolution encoder feedback.
• Keyed shaft.
• 3000 rpm operating speed.
• Approximately 2.1 kW continuous output.
• 8.25 N·m continuous stall torque.
• 20.3 N·m peak torque.
• 130 mm frame.
• 76.2 mm magnet stack.
• No integral brake.

These characteristics make it a practical choice for machines where precise closed-loop motion is required.

---

13. Main Product Advantages

13.1 High-Resolution Encoder Feedback

The encoder provides detailed rotor position information.

This is beneficial for precision positioning and synchronized motion applications.

---

13.2 Low Rotor Inertia

The low-inertia design allows the motor to respond rapidly to changing commands.

This is particularly valuable in machines with short cycle times.

---

13.3 Strong Peak Torque

The approximately 20.3 N·m peak torque provides additional torque capacity during acceleration and short-duration load changes.

---

13.4 3000 rpm Operating Speed

The 3000 rpm rating provides a useful balance between rotational speed and available torque.

It is suitable for many general-purpose industrial servo axes.

---

13.5 Keyed Shaft

The keyed shaft provides a conventional mechanical interface and can simplify integration with existing machinery.

---

13.6 Compact Industrial Frame

The 130 mm frame provides a practical balance between motor size and torque capability.

---

13.7 No-Brake Configuration

The absence of an integral brake reduces unnecessary mechanical complexity for applications where a holding brake is not required.

This can be advantageous on horizontal axes.

---

13.8 Flexible Connector Orientation

The right-angle connector can rotate approximately 180°, providing additional installation flexibility.

---

14. Typical Applications

14.1 Automated Assembly Machines

The MPL-B4530F-SJ72AA is well suited to automated assembly machinery where servo axes repeatedly position components, tools, fixtures, or workpieces.

Typical movements include:

• Linear positioning.
• Rotary indexing.
• Component insertion.
• Tool movement.
• Fixture positioning.
• Part transfer.

---

15. Packaging Machinery

Packaging equipment often requires repeated acceleration, deceleration, indexing, and synchronization.

Possible applications include:

• Film feeding.
• Product positioning.
• Cutting mechanisms.
• Labeling mechanisms.
• Carton handling.
• Product indexing.
• Conveyor synchronization.

The low-inertia construction can be beneficial when the machine performs many cycles per minute.

---

16. Material Handling Equipment

The motor can be used in horizontal material-handling applications.

Examples include:

• Conveyor positioning.
• Product transfer.
• Automated feeding.
• Sorting mechanisms.
• Horizontal indexing.
• Transfer tables.

Because this particular model does not include a holding brake, vertical gravity-loaded applications require additional evaluation.

---

17. Pick-and-Place Systems

Pick-and-place equipment requires rapid motion and repeatable positioning.

The motor’s low-inertia characteristics can help reduce acceleration and deceleration time.

High-resolution encoder feedback also provides the control system with detailed position information.

This combination can be useful for:

• Robotic transfer mechanisms.
• Component placement.
• Assembly automation.
• Electronic manufacturing equipment.
• Packaging transfer systems.

---

18. Indexing Machines

Indexing machines are another strong application area.

A typical indexing cycle may involve:

1. Accelerating rapidly.
2. Moving toward the commanded position.
3. Decelerating.
4. Settling at the target position.
5. Performing a machine operation.
6. Accelerating toward the next position.

The MPL-B4530F-SJ72AA is well suited to this type of repeated servo movement.

---

19. Machine Tools

The motor can also be used on auxiliary machine-tool axes.

Potential applications include:

• Workpiece positioning.
• Feed mechanisms.
• Tool positioning.
• Auxiliary rotary axes.
• Automatic fixtures.
• Material feeding.

The encoder feedback is useful where controlled positioning and repeatability are important.

---

20. Printing and Converting Machinery

Printing and converting machines often require accurate synchronization between rotating and linear mechanisms.

Potential applications include:

• Roller positioning.
• Material feeding.
• Web handling.
• Cutting.
• Registration control.
• Tension-related positioning mechanisms.

Servo control allows the motor to follow changing speed and position commands rather than operating at a fixed speed.

---

21. Typical Application Advantages

Application Requirement	MPL-B4530F-SJ72AA Advantage
Accurate positioning	High-resolution encoder
Repeated indexing	Low rotor inertia
Fast acceleration	Low-inertia design
Fast deceleration	Low-inertia design
High-speed motion	3000 rpm rating
Moderate continuous torque	8.25 N·m
Short-term high torque	20.3 N·m peak
Horizontal machine axes	No-brake configuration
Conventional coupling	Keyed shaft
Restricted cable space	Rotatable right-angle connector
Compact machine design	130 mm frame

---

22. Five Same-Series or Closely Related Models

The following models are closely related to the MPL-B4530F-SJ72AA and can be considered when selecting an alternative configuration.

Model	Feedback	Shaft	Brake	Speed	Continuous Torque	Peak Torque	Power	Frame	Stack	Weight
MPL-B4530F-SJ72AA	Single-turn high-resolution encoder	Keyed	No	3000 rpm	8.25 N·m	20.3 N·m	2.1 kW	130 mm	76.2 mm	Approx. 3.6–3.7 kg
MPL-B4530F-SK72AA	Single-turn high-resolution encoder	Keyless	No	3000 rpm	8.25 N·m	20.3 N·m	2.1 kW	130 mm	76.2 mm	Approx. 3.6–3.7 kg
MPL-B4530F-SJ74AA	Single-turn high-resolution encoder	Keyed	Yes	3000 rpm	8.25 N·m	20.3 N·m	2.1 kW	130 mm	76.2 mm	Approx. 9–10 kg class
MPL-B4530F-SK74AA	Single-turn high-resolution encoder	Keyless	Yes	3000 rpm	8.25 N·m	20.3 N·m	2.1 kW	130 mm	76.2 mm	Approx. 9–10 kg class
MPL-B4530K-SJ72AA	Single-turn high-resolution encoder	Keyed	No	4000 rpm	8.25 N·m	20.3 N·m	2.6 kW	130 mm	76.2 mm	Approx. 7 kg class

The MPL-B4530F-SK72AA is the closest mechanical alternative if a keyless shaft is required.

The MPL-B4530F-SJ74AA is a logical alternative when the machine requires the same keyed shaft and encoder configuration but also needs an integral brake.

The MPL-B4530K-SJ72AA is appropriate when higher rotational speed is more important, with a 4000 rpm rating.

---

23. Five Same-Brand Popular Models

The following models represent useful and commonly encountered alternatives within the same general servo motor family.

Model	Series / Configuration	Speed	Continuous Torque	Peak Torque	Power	Frame / Size	Weight
MPL-B430P-MJ74AA	MPL low-inertia, encoder, keyed, brake	5000 rpm	6.55 N·m	19.8 N·m	2.2 kW	115 mm class	Approx. 5.5 kg
MPL-B430P-MK74AA	MPL low-inertia, encoder, keyless, brake	5000 rpm	6.55 N·m	19.8 N·m	2.2 kW	115 mm class	Approx. 5.5 kg
MPL-B4530F-MJ74AA	MPL low-inertia, encoder, keyed, brake	3000 rpm	8.25 N·m	20.3 N·m	2.1 kW	130 mm	Approx. 9.5 kg class
MPL-B4540F-MJ74AA	MPL low-inertia, encoder, keyed, brake	3000 rpm	10.2 N·m	27.1 N·m	2.6 kW	130 mm class	Approx. 8.6 kg
MPL-B4560F-MJ74AA	MPL low-inertia, encoder, keyed, brake	3000 rpm	14.1 N·m	34.4 N·m	3.2 kW	130 mm class	Approx. 11.82 kg

The B430P models are useful when the machine requires higher rotational speed.

The B4530F models are suitable when approximately 8.25 N·m continuous torque is sufficient.

The B4540F and B4560F models are useful when additional torque and power are required.

---

24. Comparison: SJ72AA vs SK72AA

The MPL-B4530F-SJ72AA and MPL-B4530F-SK72AA are electrically and functionally very similar.

The primary mechanical difference is the shaft.

Parameter	MPL-B4530F-SJ72AA	MPL-B4530F-SK72AA
Feedback	Single-turn high-resolution encoder	Single-turn high-resolution encoder
Feedback Resolution	1024 cycles/rev	1024 cycles/rev
Rated Speed	3000 rpm	3000 rpm
Continuous Torque	8.25 N·m	8.25 N·m
Peak Torque	20.3 N·m	20.3 N·m
Rated Power	Approx. 2.1 kW	Approx. 2.1 kW
Shaft	Keyed	Keyless
Brake	No	No
Frame	130 mm	130 mm
Stack	76.2 mm	76.2 mm
Approx. Weight	3.6–3.7 kg	3.6–3.7 kg

Choose the SJ72AA when the machine requires a conventional keyed shaft.

Choose the SK72AA when the machine is designed for a keyless coupling.

---

25. Comparison: SJ72AA vs SJ74AA

These two configurations share the same basic motor size, feedback technology, shaft type, and speed class.

The primary difference is the brake.

Parameter	MPL-B4530F-SJ72AA	MPL-B4530F-SJ74AA
Feedback	Single-turn high-resolution encoder	Single-turn high-resolution encoder
Shaft	Keyed	Keyed
Brake	No	24 V DC
Rated Speed	3000 rpm	3000 rpm
Continuous Torque	8.25 N·m	8.25 N·m
Peak Torque	20.3 N·m	20.3 N·m
Rated Power	Approx. 2.1 kW	Approx. 2.1 kW
Frame	130 mm	130 mm
Stack	76.2 mm	76.2 mm
Approx. Weight	3.6–3.7 kg	Approx. 9–10 kg class
Typical Application	Horizontal axes	Vertical / holding applications

If the axis does not require mechanical holding, the SJ72AA provides a simpler configuration.

If the axis must hold a load when the servo is disabled, the SJ74AA may be more appropriate.

---

26. Comparison: SJ72AA vs B430P

The B430P family emphasizes higher rotational speed and a smaller frame.

Parameter	MPL-B4530F-SJ72AA	MPL-B430P
Rated Speed	3000 rpm	5000 rpm
Continuous Torque	8.25 N·m	6.55 N·m
Peak Torque	20.3 N·m	19.8 N·m
Rated Power	2.1 kW	2.2 kW
Rotor Inertia	Approx. 0.00040 kg·m²	Approx. 0.00038 kg·m²
Frame	130 mm	115 mm class
Feedback	High-resolution encoder	Configuration dependent
Shaft	Keyed	Configuration dependent
Brake	No	Configuration dependent
Approx. Weight	3.6–3.7 kg	Approx. 5.5 kg class

The B430P is a good direction for applications where high speed is the primary requirement.

The B4530F is more appropriate when higher continuous torque at 3000 rpm is preferred.

---

27. Comparison: SJ72AA vs B4540F

The B4540F provides a higher torque rating than the B4530F.

Parameter	MPL-B4530F-SJ72AA	MPL-B4540F
Rated Speed	3000 rpm	3000 rpm
Continuous Torque	8.25 N·m	10.2 N·m
Peak Torque	20.3 N·m	27.1 N·m
Rated Power	2.1 kW	2.6 kW
Rotor Inertia	Approx. 0.00040 kg·m²	Approx. 0.00052 kg·m²
Frame Class	130 mm	130 mm class
Stack	76.2 mm	101.6 mm class
Approx. Weight	3.6–3.7 kg	Approx. 8.6 kg
Feedback	Single-turn high-resolution encoder	Configuration dependent
Brake	No	Configuration dependent

The B4540F becomes attractive when the machine requires more continuous torque or a greater peak torque margin.

---

28. Product Selection Recommendations

The MPL-B4530F-SJ72AA is particularly appropriate when the following requirements are present:

• 3000 rpm operating speed.
• Approximately 2.1 kW servo power.
• Approximately 8.25 N·m continuous torque.
• Approximately 20.3 N·m peak torque.
• Single-turn high-resolution encoder feedback.
• Keyed shaft.
• No integral brake.
• 130 mm frame.
• 76.2 mm magnet stack.
• IEC metric mounting.
• Flexible right-angle connector positioning.

A different configuration should be considered if the machine requires:

• A keyless shaft.
• An integral holding brake.
• Resolver feedback.
• Higher rotational speed.
• Higher continuous torque.
• Higher peak torque.

---

29. Installation Considerations

Proper mechanical installation is important for servo motor reliability.

The motor flange should be aligned correctly with the machine.

The coupling should be correctly installed and aligned with the motor shaft.

The following factors should be checked:

• Shaft alignment.
• Coupling compatibility.
• Shaft key dimensions.
• Radial load.
• Axial load.
• Load inertia.
• Mechanical resonance.
• Cable clearance.
• Connector orientation.
• Ambient temperature.
• Motor ventilation.
• Servo drive compatibility.

A servo motor can operate at very high dynamic response levels, so mechanical misalignment that may appear minor on a conventional motor can become more significant in a high-cycle servo application.

---

30. Encoder and Drive Compatibility

The MPL-B4530F-SJ72AA uses a single-turn high-resolution encoder rather than a resolver.

Therefore, the selected servo drive must support the corresponding feedback interface and protocol.

Potential compatible drive families associated with this motor family include:

• Kinetix 5500.
• Kinetix 6200.
• Kinetix 6500.
• Kinetix 6000.
• Kinetix 300.
• Kinetix 350.
• Kinetix 2000.
• Kinetix 7000.
• Ultra 3000.

The exact drive and feedback compatibility should be verified for the specific machine configuration before commissioning.

---

31. Why Choose the MPL-B4530F-SJ72AA?

The MPL-B4530F-SJ72AA is a strong choice when the machine needs a combination of 3000 rpm speed, medium-power output, low inertia, high-resolution feedback, and a keyed shaft.

Its approximately 8.25 N·m continuous torque provides a useful operating range for many industrial axes.

The 20.3 N·m peak torque provides additional capacity during acceleration and transient loads.

The single-turn high-resolution encoder gives the servo controller detailed motor-position information.

The low-inertia rotor supports rapid changes in speed.

The keyed shaft provides a conventional mechanical connection.

The no-brake design keeps the configuration relatively straightforward for horizontal axes where mechanical holding is not required.

---

32. Main Advantages at a Glance

Advantage	Practical Benefit
Low-inertia construction	Fast acceleration and deceleration
High-resolution encoder	Detailed position feedback
1024 cycles/revolution	High feedback detail
Hiperface protocol	Closed-loop servo feedback
3000 rpm	Balanced speed and torque
8.25 N·m continuous torque	Medium-duty servo capability
20.3 N·m peak torque	Strong transient torque
2.1 kW output	Useful medium-power range
Keyed shaft	Conventional coupling interface
No brake	Suitable for non-brake applications
130 mm frame	Compact industrial form factor
76.2 mm stack	Practical torque capability
Rotatable connector	Flexible machine installation
IEC metric mounting	Easy mechanical integration

---

33. Typical Machine Categories

The MPL-B4530F-SJ72AA can be considered for:

Packaging Equipment

Servo indexing, feeding, cutting, product positioning, and synchronization.

Assembly Machinery

Component positioning, tooling, fixtures, transfer systems, and automated assembly axes.

Material Handling

Horizontal transfer systems, conveyor positioning, feeders, and sorting mechanisms.

Pick-and-Place Equipment

Rapid positioning and repetitive movement.

Machine Tools

Auxiliary axes, workpiece positioning, automatic feed systems, and fixtures.

Printing and Converting

Web positioning, feeding, cutting, and synchronization systems.

General Factory Automation

Any application requiring closed-loop servo motion with high-resolution feedback and no integrated brake.

---

34. Technical Summary

Category	MPL-B4530F-SJ72AA
Brand	Allen-Bradley
Series	MP-Series MPL Low-Inertia Servo Motors
Motor Type	Brushless AC Rotary Servo
Voltage Class	400 V AC
Motor Voltage	460 V AC
Frame	130 mm
Frame Size	45
Magnet Stack	76.2 mm
Rated Speed	3000 rpm
Maximum Speed	3000 rpm
Continuous Stall Torque	8.25 N·m
Peak Torque	20.3 N·m
Rated Continuous Power	Approx. 2.1 kW
Rotor Inertia	Approx. 0.00040 kg·m²
Feedback	Absolute single-turn high-resolution encoder
Resolution	1024 cycles/rev
Protocol	Hiperface
Shaft	Keyed
Shaft Seal	None
Brake	No brake
Connector	SpeedTEC DIN
Connector Style	Right-angle
Connector Rotation	180°
Mounting	IEC Metric
Mounting Holes	Free / Type FF
Maximum Operating Temperature	Approx. 40 °C
Approximate Weight	3.6–3.7 kg
Main Application	Industrial motion control
Best Application Type	Horizontal precision servo axes

---

35. Final Product Description

The Allen-Bradley MPL-B4530F-SJ72AA is a 3000 rpm low-inertia brushless servo motor designed for demanding industrial automation and motion-control applications.

Its combination of 8.25 N·m continuous stall torque, 20.3 N·m peak torque, approximately 2.1 kW continuous output, 130 mm frame size, and 76.2 mm magnet stack gives it a useful balance between motor size, torque capacity, and dynamic response.

The most distinctive feature of this configuration is its single-turn high-resolution encoder feedback.

The encoder provides detailed rotor-position information and supports closed-loop servo operation for positioning, indexing, synchronized movement, and speed control.

The motor also uses a keyed shaft, making it suitable for machines using conventional keyed couplings.

Unlike brake-equipped versions, the MPL-B4530F-SJ72AA has no integral brake. This makes it particularly suitable for horizontal servo axes where the motor does not need to mechanically hold a gravity-loaded load after shutdown.

Its low-inertia rotor is another major advantage.

In applications involving frequent starts, stops, reversals, and position changes, low rotor inertia can help the servo system achieve faster dynamic response and reduce unnecessary acceleration effort.

The SpeedTEC DIN right-angle connector with approximately 180° rotational flexibility also provides useful freedom during machine installation and cable routing.

Overall, the MPL-B4530F-SJ72AA is a well-balanced servo motor for industrial automation applications that require high-resolution feedback, reliable closed-loop positioning, moderate-to-high torque, 3000 rpm operation, a keyed shaft, and a compact low-inertia motor design.

It is particularly well suited to assembly machines, packaging machinery, indexing systems, pick-and-place equipment, horizontal material-handling systems, printing and converting machinery, machine-tool auxiliary axes, and general factory automation.

For applications requiring a similar motor but a keyless shaft, the MPL-B4530F-SK72AA is a natural alternative.

For applications requiring a holding brake, a brake-equipped SJ74AA configuration is more appropriate.

For applications requiring higher rotational speed, the MPL-B4530K-SJ72AA provides a 4000 rpm alternative.

For applications requiring higher torque, the MPL-B4540F or MPL-B4560F family can provide additional torque and power capacity.

In short, the MPL-B4530F-SJ72AA is best characterized as a 3000 rpm, 2.1 kW-class, 130 mm-frame, low-inertia servo motor with single-turn high-resolution encoder feedback, keyed shaft, and no integral brake, intended for accurate and repeatable industrial motion control.