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Allen-Bradley MPL-B420P-SK72AA Low-Inertia Servo Motor

1. Product Overview

The Allen-Bradley MPL-B420P-SK72AA is a high-performance low-inertia brushless servo motor belonging to the MP-Series MPL servo motor family.

It is designed for industrial motion-control systems that require high rotational speed, accurate positioning, stable torque output, and fast dynamic response. With a 115 mm frame size, 50.8 mm magnet stack length, and a rated speed of 5000 rpm, the motor is well suited to automated machinery where both speed and repeatable positioning are important.

The MPL-B420P-SK72AA uses a single-turn high-resolution absolute encoder, a keyless shaft extension, and a SpeedTEC DIN right-angle connector. Unlike brake-equipped versions, this model is configured with no motor holding brake, making it particularly suitable for applications where an external holding mechanism is unnecessary or where reduced mechanical complexity is preferred.

The motor provides approximately 1.9 kW continuous rated power, 4.74 N·m continuous torque, and 13.5 N·m peak torque, giving it a useful combination of speed capability and short-duration overload performance.

For machine builders, the main attraction of this model is its balance. It is not simply a high-power motor; it is a compact servo motor intended to deliver controlled motion without requiring a large motor body. Its low-inertia design allows the motor to accelerate and decelerate rapidly, which is especially useful when machine cycles contain frequent starts, stops, indexing movements, and direction changes.

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2. Basic Product Information

Parameter	Specification
Model	MPL-B420P-SK72AA
Brand	Allen-Bradley
Product Series	MP-Series MPL
Product Type	Low-Inertia Brushless Servo Motor
Motor Type	AC Rotary Servo Motor
Voltage Class	400 V AC class
Rated Voltage	460 V AC
Rated Power	1.9 kW
Rated Speed	5000 rpm
Maximum Speed	5000 rpm
Continuous Torque	4.74 N·m
Peak Torque	13.5 N·m
Feedback	Absolute Single-Turn High-Resolution Encoder
Feedback Resolution	Sin/Cos, 1024 cycles/rev
Feedback Protocol	Hiperface
Shaft Configuration	Keyless Shaft Extension
Brake	No Brake
Shaft Seal	No Shaft Seal
Frame Size	115 mm
Magnet Stack Length	50.8 mm
Connector	SpeedTEC DIN Connector
Connector Position	Right Angle
Connector Rotation	180° Rotatable
Protection Rating	IP66
Duty	S1
Operating Temperature	0 to 40 °C
Rotor Inertia	Approximately 0.00026 kg·m²
Approx. Motor Weight	5.44 kg
Dimensions	115 mm frame; 50.8 mm magnet stack; overall installation dimensions depend on the mechanical configuration

The 115 mm frame and 50.8 mm magnet stack are part of the model’s defined mechanical configuration. The approximately 5.44 kg mass is a useful reference value for machine design and handling. For exact mounting-hole spacing, shaft dimensions, flange dimensions, and overall envelope dimensions, the mechanical drawing for the specific motor configuration should be used before fabrication.

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3. Product Model Interpretation

The model number MPL-B420P-SK72AA contains useful information about the motor configuration.

Model Section	Meaning
MPL	MP-Series MPL low-inertia servo motor family
B	460 V-class motor configuration
4	Frame 4, approximately 115 mm frame size
20	50.8 mm magnet stack length
P	5000 rpm speed class
S	Single-turn high-resolution feedback
K	Keyless shaft extension
7	SpeedTEC DIN right-angle connector
2	No brake
AA	Standard configuration designation

This model structure makes the product easier to compare with other MPL motors. For example, models with similar B420P configurations may use different shaft arrangements, feedback systems, or brake options while retaining a similar motor frame and torque class.

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4. Product Series

MP-Series MPL Low-Inertia Servo Motor Series

The MPL-B420P-SK72AA belongs to the MP-Series MPL low-inertia brushless servo motor series.

The series was developed around the idea of combining compact motor construction with fast servo response. Low rotor inertia is particularly valuable in applications where the motor has to change speed quickly rather than simply run continuously at one fixed speed.

The MPL family covers a broad range of motor sizes, voltage configurations, feedback arrangements, shaft configurations, brake options, and magnet-stack lengths.

Within this family, the B420P configuration represents a relatively substantial motor size, with a 115 mm frame, 50.8 mm stack length, 5000 rpm operating speed, and 4.74 N·m continuous torque.

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5. Detailed Technical Parameters

Electrical and Performance Parameters

Parameter	MPL-B420P-SK72AA
Model	MPL-B420P-SK72AA
Rated Voltage	460 V AC
Voltage Class	400 V AC class
Phase	Three-phase AC
Rated Power	1.9 kW
Rated Speed	5000 rpm
Maximum Speed	5000 rpm
Continuous Torque	4.74 N·m
Peak Torque	13.5 N·m
Continuous Duty	S1
Operating Temperature	0 to 40 °C
Rotor Inertia	Approx. 0.00026 kg·m²
Protection	IP66

The combination of 1.9 kW power, 4.74 N·m continuous torque, and 13.5 N·m peak torque gives this motor enough dynamic capacity for demanding automated machinery while maintaining a relatively compact physical size.

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Mechanical Parameters

Parameter	Specification
Model	MPL-B420P-SK72AA
Frame Size	115 mm
Frame Designation	Frame 4
Magnet Stack	50.8 mm
Stack Designation	20
Shaft Type	Keyless
Shaft Seal	None
Mounting	IEC Metric
Mounting Holes	Free Mounting Holes / Type FF
Approx. Weight	5.44 kg
Overall Dimensions	Configuration-dependent; 115 mm frame and 50.8 mm magnet stack
Brake	None

The keyless shaft is an important mechanical characteristic. It allows the motor shaft to be paired with compatible coupling arrangements without relying on a conventional shaft key. This can be useful in applications where the machine designer wants a clean coupling interface and controlled clamping connection.

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6. Feedback System

One of the important features of the MPL-B420P-SK72AA is its absolute single-turn high-resolution encoder.

The feedback system uses Sin/Cos, 1024 cycles per revolution, with Hiperface protocol. This gives the motion-control system detailed information about shaft position and rotational movement.

For servo applications, feedback quality has a direct effect on positioning performance.

The controller needs to know where the motor shaft is, how quickly it is moving, and how much the actual position differs from the commanded position. High-resolution feedback allows the control system to make frequent corrections and maintain accurate motion.

The single-turn configuration is especially suitable for applications where the important operating range is within one mechanical revolution of absolute position information and where multi-turn position tracking is not required.

Typical applications include indexing tables, pick-and-place equipment, automated assembly equipment, packaging machinery, and high-speed positioning systems.

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7. Keyless Shaft Design

The MPL-B420P-SK72AA uses a keyless shaft extension.

Compared with a keyed shaft, a keyless configuration can provide a cleaner mechanical interface when used with an appropriate clamping coupling or similar transmission component.

The absence of a traditional shaft key can also simplify certain coupling arrangements and can be advantageous where alignment, concentricity, and compact mechanical packaging are important.

However, the coupling must be selected according to the motor torque, peak torque, operating speed, shaft diameter, axial load, radial load, and machine dynamics.

The keyless shaft should therefore be considered as part of the complete mechanical transmission system rather than as an isolated motor feature.

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8. No-Brake Configuration

The MPL-B420P-SK72AA is a no-brake version.

This is an important distinction when comparing it with brake-equipped models such as versions using the “74” configuration.

A servo motor without a holding brake is generally appropriate when the machine does not need the motor itself to mechanically hold a vertical or suspended load after power is removed.

For horizontal rotary motion, conveyors, indexing mechanisms, rotary tables, feeders, and many automated positioning systems, a motor brake may not be necessary.

For vertical axes or applications where gravity can cause movement after power loss, the lack of a built-in brake must be considered carefully. In such cases, a brake-equipped motor or an independent mechanical holding device may be more appropriate.

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9. SpeedTEC DIN Connector

The motor uses a SpeedTEC DIN right-angle connector with a 180-degree rotatable configuration.

This is particularly useful when space around the motor is limited.

Instead of having a rigid cable exit direction, the connector arrangement gives the machine designer more flexibility when routing motor and feedback cables.

This can make a difference in compact equipment where the servo motor is installed close to guards, frames, gearboxes, linear modules, or other motors.

A clean cable-routing arrangement can also reduce unnecessary cable bending and help maintain a more organized machine interior.

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10. IP66 Protection

The MPL-B420P-SK72AA is specified with an IP66 protection rating.

This level of protection makes the motor suitable for many industrial environments where protection against dust and water exposure is required.

It is important to understand that IP66 does not mean the motor is suitable for every harsh environment.

Chemical exposure, high-pressure cleaning, extreme temperature, food-processing requirements, corrosive atmospheres, and continuous exposure to particular liquids should be evaluated separately.

The motor’s operating environment should always be considered together with cable connections, connectors, mounting orientation, and the surrounding machine enclosure.

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11. Main Product Advantages

11.1 High-Speed Operation

The motor is designed for 5000 rpm operation, making it suitable for machines where short cycle times and fast rotary movement are important.

High-speed operation can help increase machine throughput, particularly in applications involving repeated indexing, rapid positioning, cutting, feeding, winding, or pick-and-place movement.

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11.2 Strong Continuous Torque

With 4.74 N·m continuous torque, the motor provides a useful level of sustained mechanical output for a 115 mm-frame servo motor.

This makes it suitable for applications that require more than simple low-load positioning but do not require a much larger servo motor.

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11.3 High Peak Torque

The approximately 13.5 N·m peak torque capability provides additional short-duration torque capacity.

Peak torque is useful during acceleration, deceleration, rapid direction changes, machine indexing, and temporary load disturbances.

The peak rating should not be treated as a continuous operating torque. The actual duty cycle and motor thermal conditions must remain within the applicable motor and drive limits.

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11.4 Low-Inertia Design

Low rotor inertia is one of the defining characteristics of the MPL family.

A lower-inertia motor can respond rapidly to changes in commanded speed.

This is particularly valuable when the load inertia is appropriately matched to the motor and the application requires frequent acceleration and deceleration.

Typical examples include packaging machines, indexing systems, assembly equipment, printing-related machinery, and automated material-handling systems.

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11.5 High-Resolution Feedback

The single-turn high-resolution encoder provides detailed position feedback to the motion-control system.

This supports accurate positioning, controlled acceleration and deceleration, repeatable indexing, and stable closed-loop motion.

For equipment manufacturers, this can be especially useful where mechanical positioning accuracy is an important part of the production process.

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11.6 Compact 115 mm Frame

The 115 mm frame size provides a useful balance between physical size and output capability.

The motor is large enough to provide meaningful torque and power while still being compact enough for many machine-mounted servo applications.

For machine designers, this can simplify motor selection when cabinet space, machine width, or axis spacing is limited.

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11.7 Keyless Shaft

The keyless shaft configuration can simplify certain coupling designs and is particularly useful when the selected transmission system is designed around a clamping-style shaft connection.

It also allows the machine builder to choose the coupling arrangement according to the application’s requirements instead of relying on a traditional keyed connection.

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11.8 No-Brake Configuration

The no-brake configuration removes the need for an integrated motor holding brake.

For horizontal axes and applications where external mechanical holding is not required, this can provide a simpler motor configuration.

It also makes the motor a useful choice when the application prioritizes rotational performance and does not need an integrated holding function.

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12. Typical Applications

Packaging Machinery

The MPL-B420P-SK72AA can be used in packaging equipment where rapid and repeatable movement is required.

Typical examples include indexing systems, feeders, product positioning mechanisms, cutting mechanisms, film-handling systems, and automated packaging stations.

The 5000 rpm speed capability and low-inertia design are useful when machine cycles contain repeated acceleration and deceleration.

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Automated Assembly Equipment

Assembly machinery often requires accurate movement between multiple predefined positions.

The servo motor can be used for rotary positioning, actuator drive systems, indexing mechanisms, and synchronized machine axes.

The high-resolution feedback system helps the controller maintain accurate shaft positioning during repeated machine cycles.

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Material Handling Equipment

The motor can be used for controlled conveyor movement, indexing, transfer mechanisms, and automated material-handling equipment.

Servo control is especially useful when the machine needs more than simple constant-speed motor operation.

For example, the system may need to accelerate a product carrier, move it to a precise position, stop, reverse direction, and repeat the sequence many times.

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Pick-and-Place Machinery

Pick-and-place systems often require fast acceleration combined with accurate stopping.

The low-inertia motor configuration is well suited to these motion profiles.

When the mechanical load is properly matched to the motor, the system can achieve fast movement without unnecessarily large motor dimensions.

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Rotary Indexing Systems

Rotary indexing tables and similar mechanisms are another suitable application.

The motor can provide controlled acceleration, positioning, and repeatable indexing.

The 4.74 N·m continuous torque and 13.5 N·m peak torque provide useful capacity for applications that require both sustained movement and short-duration acceleration torque.

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Printing and Converting Equipment

Servo motors are commonly used in applications requiring synchronization between rotating components.

The MPL-B420P-SK72AA can be considered for controlled rotary axes, feeding mechanisms, web-handling equipment, and other machinery where speed synchronization and positioning are important.

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Machine Tools and Automated Machinery

The motor can also be considered for various automated machine-tool and production-machine axes.

Its high-speed capability, compact frame, and feedback configuration make it suitable for motion systems where controlled speed and positioning are more important than simple fixed-speed rotation.

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13. Five Related Models in the Same Series

The following models are closely related to the MPL-B420P-SK72AA and are useful when comparing shaft, brake, and feedback configurations.

Model	Feedback	Shaft	Brake	Speed	Continuous Torque	Peak Torque	Power	Frame / Stack	Approx. Weight
MPL-B420P-SJ72AA	Single-turn high-resolution	Keyed	No brake	5000 rpm	4.74 N·m	13.5 N·m	1.9 kW	115 mm / 50.8 mm	Approx. 5.4 kg
MPL-B420P-SJ74AA	Single-turn high-resolution	Keyed	24 V DC brake	5000 rpm	4.74 N·m	13.5 N·m	1.9 kW	115 mm / 50.8 mm	Approx. 5.4 kg
MPL-B420P-SK74AA	Single-turn high-resolution	Keyless	24 V DC brake	5000 rpm	4.74 N·m	13.5 N·m	1.9 kW	115 mm / 50.8 mm	Approx. 5.4 kg
MPL-B420P-RJ72AA	Resolver	Keyed	No brake	5000 rpm	4.74 N·m	13.5 N·m	1.9 kW	115 mm / 50.8 mm	Approx. 5.4 kg
MPL-B420P-MJ74AA	Absolute multi-turn	Keyed	24 V DC brake	5000 rpm	4.74 N·m	13.5 N·m	1.9 kW	115 mm / 50.8 mm	Approx. 5.4 kg

The major differences among these models are not necessarily the basic motor power or frame size. The more important differences are the feedback type, shaft configuration, and brake option.

This makes the comparison particularly useful when replacing an existing motor. A mechanically similar motor is not automatically an electrically equivalent replacement; feedback and brake configuration must also be checked.

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14. Comparison With Closely Related Configurations

MPL-B420P-SK72AA vs MPL-B420P-SJ72AA

Both motors belong to the same B420P performance class.

The main difference is the shaft.

The SK72AA uses a keyless shaft, while the SJ72AA uses a keyed shaft.

If the existing machine uses a clamping coupling designed for a keyless shaft, the SK72AA is the natural configuration.

If the transmission system specifically requires a keyed shaft, the SJ72AA may be more appropriate.

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MPL-B420P-SK72AA vs MPL-B420P-SK74AA

These two models have a very similar basic configuration.

The main difference is the brake.

The SK72AA has no brake, while the SK74AA incorporates a 24 V DC holding brake.

For a horizontal axis that does not require mechanical holding after power removal, the SK72AA can be a straightforward choice.

For an axis that must remain mechanically held when servo power is removed, the brake-equipped SK74AA is more appropriate, provided the brake capacity is suitable for the load.

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MPL-B420P-SK72AA vs MPL-B420P-MJ74AA

The principal difference is the feedback arrangement.

The SK72AA uses a single-turn high-resolution encoder, while the MJ74AA uses an absolute multi-turn encoder and a brake-equipped configuration.

For applications where absolute multi-turn position information is required, a multi-turn configuration can offer significant advantages.

For applications where single-turn high-resolution feedback is sufficient, the SK72AA provides a simpler configuration.

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15. Five Popular Allen-Bradley Models for Comparison

The following five models are useful comparison points within the Allen-Bradley servo motor range, particularly when selecting motors with different power and torque levels.

Model	Series	Rated Power	Continuous Torque	Peak Torque	Speed	Feedback	Frame / Stack	Approx. Weight
MPL-B310P-SJ74AA	MP-Series MPL	Approx. 0.77 kW	1.58 N·m	3.61 N·m	5000 rpm	Single-turn high-resolution	100 mm / 25.4 mm	Approx. 2.7 kg
MPL-B320P-SJ74AA	MP-Series MPL	Approx. 1.5 kW	3.05 N·m	7.91 N·m	5000 rpm	Single-turn high-resolution	100 mm / 50.8 mm	Approx. 3.7 kg
MPL-B330P-SJ74AA	MP-Series MPL	Approx. 1.8 kW	4.18 N·m	11.1 N·m	5000 rpm	Single-turn high-resolution	100 mm / 76.2 mm	Approx. 4.6 kg
MPL-B420P-SK72AA	MP-Series MPL	1.9 kW	4.74 N·m	13.5 N·m	5000 rpm	Single-turn high-resolution	115 mm / 50.8 mm	Approx. 5.44 kg
MPL-B430P-SJ74AA	MP-Series MPL	Approx. 2.2 kW	6.55 N·m	19.8 N·m	5000 rpm	Single-turn high-resolution	115 mm / 76.2 mm	Approx. 5.5 kg

These models show how the MPL range can be scaled according to torque and power requirements.

The B310P is more appropriate for lower-power applications, while the B320P and B330P occupy intermediate positions. The B420P provides a stronger combination of torque and power, while the B430P offers still greater torque capability.

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16. Where the MPL-B420P-SK72AA Fits in the Product Range

The MPL-B420P-SK72AA sits in an important middle-to-upper range of compact servo motors.

Its 1.9 kW power rating is enough for many industrial automation axes without moving immediately into a much larger motor class.

The motor’s 4.74 N·m continuous torque makes it suitable for loads that require sustained mechanical output, while its 13.5 N·m peak torque gives the system additional acceleration capability.

The 5000 rpm rating also makes it suitable for high-speed applications.

In practical terms, it can be viewed as a good choice for a machine axis that needs more torque than a smaller 100 mm-frame motor can provide but does not yet require a much larger servo motor.

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17. Installation Considerations

Correct mechanical installation is essential for servo motor performance.

The motor should be mounted on a rigid, accurately aligned machine structure.

Misalignment between the motor shaft and driven equipment can increase bearing loading and coupling stress.

The keyless shaft also means that the coupling system needs to be selected carefully.

The coupling should be rated for the motor’s continuous torque, peak torque, maximum speed, and actual load characteristics.

Cable routing should also be considered during installation.

Because the motor uses a right-angle SpeedTEC DIN connector, the available connector orientation can be used to keep the cable path clear of moving mechanical components.

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18. Brake Selection Considerations

The MPL-B420P-SK72AA does not include an integrated holding brake.

This is not necessarily a disadvantage.

For many horizontal rotary axes, a brake is unnecessary because the mechanical system does not require the motor to hold the load after servo power is removed.

However, vertical axes require additional attention.

If a load can move downward because of gravity when motor torque disappears, relying only on servo control may not provide sufficient mechanical safety.

In those cases, a brake-equipped motor or a separate mechanical holding system should be evaluated.

The brake decision should therefore be based on the machine’s actual mechanical behavior rather than simply choosing the model with the largest number of features.

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19. Weight and Dimensions

For machine design, the important basic dimensional information for the MPL-B420P-SK72AA is its 115 mm frame size and 50.8 mm magnet stack length.

The approximate motor mass is 5.44 kg.

Dimension / Mechanical Item	Value
Model	MPL-B420P-SK72AA
Frame Size	115 mm
Magnet Stack Length	50.8 mm
Approx. Weight	5.44 kg
Shaft	Keyless
Shaft Seal	None
Mounting Standard	IEC Metric
Overall Motor Envelope	Depends on mechanical drawing and configuration
Connector	Right-angle SpeedTEC DIN
Connector Rotation	180°

For actual machine fabrication, the 115 mm frame dimension and 50.8 mm stack length should be treated as the basic selection dimensions rather than as a substitute for a complete mechanical drawing.

Mounting-hole locations, flange dimensions, shaft diameter, shaft projection, connector clearance, and total motor length should be checked against the exact mechanical drawing before producing a machine mounting plate.

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20. Maintenance Considerations

Servo motors are generally selected for long-term industrial operation, but correct installation and operating conditions remain important.

The motor should be kept within its specified operating temperature range.

Excessive heat can affect motor performance and can reduce the available continuous torque.

Mechanical vibration should also be monitored.

Unusual vibration, coupling noise, increasing bearing temperature, or abnormal motor sound can indicate problems elsewhere in the mechanical system.

The motor cable and feedback connection should also be inspected during machine maintenance.

Because servo systems depend on accurate feedback, a damaged feedback connection can produce positioning problems even when the motor itself is mechanically healthy.

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21. Replacement Selection Checklist

When replacing an existing motor with an MPL-B420P-SK72AA, the following points should be checked:

Check Item	Requirement
Model	MPL-B420P-SK72AA
Voltage	460 V AC class
Power	1.9 kW
Continuous Torque	4.74 N·m
Peak Torque	13.5 N·m
Speed	5000 rpm
Frame	115 mm
Stack	50.8 mm
Feedback	Single-turn high-resolution
Shaft	Keyless
Brake	No brake
Connector	SpeedTEC DIN
Protection	IP66
Approx. Weight	5.44 kg
Rotor Inertia	Approx. 0.00026 kg·m²

A replacement should not be selected only by matching the physical frame size.

The feedback type, drive compatibility, shaft arrangement, brake configuration, voltage, speed, torque, connector, and machine duty cycle should all be checked.

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22. Main Advantages at a Glance

Advantage	Description
High-Speed Capability	5000 rpm rating supports fast machine cycles
Strong Torque Output	4.74 N·m continuous torque
High Peak Torque	13.5 N·m peak torque for acceleration and dynamic loads
Low Inertia	Supports rapid acceleration and deceleration
High-Resolution Feedback	Single-turn encoder supports accurate servo control
Compact Frame	115 mm frame provides a good power-to-size balance
Keyless Shaft	Useful for compatible clamping-type coupling systems
No-Brake Configuration	Suitable for axes that do not require motor holding
IP66 Protection	Suitable for many demanding industrial environments
Flexible Connector Orientation	Right-angle connector can be rotated through 180°
Industrial Servo Construction	Designed for controlled, repeatable motion

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23. Recommended Application Selection

The MPL-B420P-SK72AA is particularly attractive when the machine requires:

• High-speed rotary movement
• Accurate positioning
• Frequent acceleration and deceleration
• Moderate-to-high continuous torque
• High short-term peak torque
• Compact servo motor dimensions
• Keyless mechanical coupling
• Single-turn high-resolution feedback
• No integrated motor brake
• IP66-rated motor protection

It is less suitable when the application specifically requires an integrated holding brake or absolute multi-turn position information.

In those situations, another configuration within the same motor family may be more appropriate.

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24. Overall Product Evaluation

The Allen-Bradley MPL-B420P-SK72AA is a well-balanced servo motor for industrial motion-control applications.

Its main strengths are not based on one single specification. Instead, the motor combines several useful characteristics: 5000 rpm speed, 1.9 kW rated power, 4.74 N·m continuous torque, 13.5 N·m peak torque, low rotor inertia, high-resolution single-turn feedback, a keyless shaft, IP66 protection, and a compact 115 mm frame.

This combination makes it particularly suitable for automated machines that need fast and repeatable motion.

The no-brake configuration is also worth highlighting. For applications that do not need mechanical holding, avoiding an integrated brake can make the motor configuration simpler and easier to match to the machine.

The keyless shaft further supports compact mechanical integration when the machine uses an appropriate clamping coupling.

From a selection perspective, the most important point is to distinguish the SK72AA from visually similar MPL-B420P variants.

The SK72AA is specifically characterized by its keyless shaft and no-brake configuration. If the machine requires a keyed shaft, a brake, or multi-turn feedback, another configuration should be considered.

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25. Final Summary

The Allen-Bradley MPL-B420P-SK72AA is a MP-Series MPL low-inertia brushless AC servo motor designed for demanding industrial motion applications.

Its core specifications include 1.9 kW rated power, 4.74 N·m continuous torque, 13.5 N·m peak torque, 5000 rpm rated speed, 115 mm frame size, 50.8 mm magnet stack length, approximately 5.44 kg weight, and approximately 0.00026 kg·m² rotor inertia.

The motor uses a single-turn high-resolution absolute encoder with Sin/Cos 1024 cycles/rev feedback, a keyless shaft, a SpeedTEC DIN right-angle connector, and no integrated brake.

For high-speed packaging equipment, automated assembly machines, indexing systems, pick-and-place machinery, material-handling systems, rotary positioning equipment, and other automated production machinery, this configuration provides a practical combination of speed, torque, feedback resolution, and mechanical flexibility.

When selecting or replacing this motor, the most important points to verify are the 460 V AC rating, 1.9 kW power, 4.74 N·m continuous torque, 13.5 N·m peak torque, 5000 rpm speed, 115 mm frame, 50.8 mm stack, single-turn feedback, keyless shaft, no-brake configuration, connector arrangement, and mechanical dimensions.

Overall, the MPL-B420P-SK72AA is best regarded as a compact, high-speed, low-inertia servo motor for machines where accurate motion, rapid response, and reliable industrial operation are more important than having an integrated motor brake.