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MPL-B430P-MJ74AA Low-Inertia Servo Motor — Detailed Product Information, Specifications, Applications, Advantages and Related Models

Below is a detailed English product description for MPL-B430P-MJ74AA.

As requested, I am not including web links, source names, citations, or source sections in the content. I am also keeping the wording natural and technical rather than using overly promotional or repetitive language.

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1. Product Overview

The MPL-B430P-MJ74AA is a high-performance, low-inertia brushless AC servo motor designed for industrial motion-control applications that require fast response, accurate positioning, stable speed control and high repeatability.

It belongs to the MP-Series MPL Low-Inertia Servo Motor family and is designed for high-performance motion systems. The motor uses a 460 V AC class, 115 mm frame, 76.2 mm magnetic stack, and a rated speed of 5000 rpm.

One of the most important differences between the MPL-B430P-MJ74AA and similar MPL models is its absolute multi-turn high-resolution encoder. The encoder uses Sin/Cos 1024 cycles/revolution feedback with Hiperface protocol, providing high-resolution position information for the servo control system.

The motor also includes an integrated 24 V DC holding brake and a keyed shaft extension, making it suitable for machinery where mechanical holding and positive shaft coupling are important.

With approximately 6.55 N·m continuous torque, approximately 19.8 N·m peak torque, and approximately 2.2 kW continuous output, the MPL-B430P-MJ74AA is positioned toward the higher-performance end of the smaller MPL servo motor range.

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2. Basic Product Information

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3. Detailed Technical Parameters

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4. Product Series

The MPL-B430P-MJ74AA belongs to the MPL Low-Inertia Brushless Servo Motor Series, which is part of the broader MP-Series.

The MPL family is designed around a combination of compact mechanical construction, relatively high torque density and fast dynamic response.

The low-inertia design is particularly useful in machinery where the motor repeatedly accelerates and decelerates.

Typical motion profiles include:

Start → Accelerate → Run → Decelerate → Stop → Reverse → Repeat

For this kind of machine operation, rotor inertia has a direct effect on how quickly the servo system can change speed.

The MPL-B430P-MJ74AA is therefore more suitable for dynamic motion applications than a motor selected only for continuous constant-speed operation.

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5. Product Model Identification

The complete model number is:

MPL-B430P-MJ74AA

A general interpretation of the model configuration is shown below.

The exact model number should be retained when replacing an existing motor because models with similar B430P designations can have different feedback, shaft, brake or connector configurations.

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6. Absolute Multi-Turn Encoder

The absolute multi-turn encoder is one of the most important features of the MPL-B430P-MJ74AA.

The encoder provides high-resolution feedback concerning both the motor’s position and its rotation history.

The encoder uses Sin/Cos 1024 cycles per revolution and a Hiperface protocol.

Compared with a basic incremental feedback arrangement, an absolute multi-turn system can provide considerably more useful position information to the motion-control system.

This is particularly valuable in applications where the controller needs reliable position information during complex machine sequences.

Typical applications include:

• Precision positioning
• Multi-axis synchronization
• Rotary indexing
• Electronic gearing
• Electronic camming
• Automated assembly
• Machine-tool positioning
• High-speed material handling

The absolute multi-turn feedback configuration is also particularly attractive where maintaining reliable position information is important during machine startup and restart procedures.

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7. Motor Performance

The MPL-B430P-MJ74AA provides approximately:

6.55 N·m continuous stall torque

and approximately:

19.8 N·m peak torque

with a rated speed of:

5000 rpm

and continuous power of approximately:

2.2 kW

This combination gives the motor a useful balance between high rotational speed and torque capability.

It is not simply a high-speed motor. The relatively high peak torque allows it to handle short acceleration or transient load conditions when the complete servo system is properly sized.

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8. Low-Inertia Design

The low-inertia design is especially useful in high-cycle machinery.

A servo motor must repeatedly overcome its own rotor inertia as well as the reflected inertia of the mechanical load.

The MPL-B430P-MJ74AA has a rotor inertia of approximately 0.00042 kg·m², making it suitable for dynamic applications where rapid changes in speed are required.

A lower rotor inertia can help reduce the amount of torque required to accelerate the motor itself.

This can improve the machine’s response during:

• Rapid acceleration
• Rapid deceleration
• Direction changes
• Short positioning movements
• Repeated indexing
• High-frequency cycling

The actual system response will still depend heavily on load inertia, gearbox ratio, coupling, acceleration profile and servo-drive tuning.

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9. Keyed Shaft

The MPL-B430P-MJ74AA uses a keyed shaft extension.

A keyed shaft provides a positive mechanical interface between the motor shaft and the connected mechanical component.

This can be useful with:

• Couplings
• Pulleys
• Gearboxes
• Timing mechanisms
• Mechanical transmission systems
• Rotary indexing equipment

When replacing an existing motor, shaft diameter, shaft length, key dimensions and mounting geometry should all be checked.

A motor with the same electrical specifications but a different shaft configuration should not automatically be regarded as a direct replacement.

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10. Integrated 24 V DC Brake

The motor includes a 24 V DC holding brake.

The brake is intended primarily to hold the shaft when the motor is not actively producing torque.

This feature can be especially useful in:

• Vertical axes
• Positioning mechanisms
• Lifting equipment
• Vertical slides
• Indexing mechanisms
• Machines requiring stationary shaft holding

For vertical applications, the brake should be evaluated against the actual static load and required safety level.

The brake should not automatically be considered a replacement for an independent safety braking system in personnel-protection applications.

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11. Mechanical Dimensions

The motor uses a 115 mm frame size with a 76.2 mm magnetic stack.

These dimensions are important when determining whether the motor can physically fit into an existing machine.

The 115 mm frame and 76.2 mm magnetic stack should be regarded as the primary dimensional references.

For a retrofit, the mounting-hole pattern and shaft dimensions are just as important as the motor body dimensions.

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12. Product Weight

The weight of this model can vary between commercial listings depending on whether the figure represents net motor weight, packaging weight or a particular configuration.

For practical product-description purposes, an approximate motor weight of 6–6.5 kg is reasonable for this class, while an exact value should be taken from the physical motor or its specific product documentation.

For machine structural calculations, do not use packaging weight or a distributor’s shipping weight as the motor’s actual mechanical mass.

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13. Product Applications

Packaging Machinery

The MPL-B430P-MJ74AA is well suited to packaging equipment requiring accurate and repeatable movement.

Typical uses include:

• Film feeding
• Product positioning
• Cutting mechanisms
• Sealing mechanisms
• Rotary indexing
• Conveyor synchronization
• Packaging material handling

Packaging machines often require rapid movement followed by precise stopping.

The low-inertia design can help the servo system respond quickly to these repeated motion commands.

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14. Printing and Converting Machinery

Printing and converting equipment often requires synchronized movement between multiple shafts.

The servo motor can be used for:

• Web feeding
• Roller control
• Registration
• Cutting
• Label handling
• Indexing
• Tension-related motion systems

The absolute feedback system is useful when the machine requires detailed position information.

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15. Automated Assembly

Automated assembly equipment frequently needs accurate movement over short distances.

The MPL-B430P-MJ74AA can be considered for:

• Rotary assembly stations
• Component positioning
• Automated feeders
• Pick-and-place mechanisms
• Screw-driving systems
• Inspection stations
• Product indexing
• Transfer mechanisms

The combination of high speed and servo feedback makes this type of motor suitable for repetitive automated production.

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16. Material Handling

Servo-controlled material handling differs from a conventional conveyor because the motor can be commanded to move to specific positions.

Typical applications include:

• Servo conveyors
• Indexing conveyors
• Rotary transfer systems
• Automated positioning
• Roller drives
• Transfer tables
• Material feeding

Where products need to stop at precise locations, servo control provides a significant advantage.

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17. Machine Tools

The motor can be used in suitable machine-tool applications requiring controlled rotary motion.

Potential uses include:

• Rotary positioning
• Automated tool mechanisms
• Auxiliary axes
• Indexing
• Automated material handling around machining equipment

The exact suitability depends on the required torque, speed, acceleration and duty cycle.

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18. Electronics Manufacturing

Electronics production equipment frequently requires fast positioning and repeatable movements.

The motor can be suitable for:

• Component positioning
• Inspection mechanisms
• Feeding systems
• Assembly equipment
• Rotary indexing
• Product transfer
• Automated testing mechanisms

The absolute multi-turn feedback arrangement can be advantageous where detailed position control is required.

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19. Main Product Advantages

19.1 High-Speed Operation

The motor provides a rated speed of 5000 rpm.

This makes it suitable for high-speed rotary applications where rapid movement is required.

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19.2 High Torque Density

The motor provides approximately 6.55 N·m continuous torque in a 115 mm frame.

This provides a useful combination of motor size and output capability.

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19.3 High Peak Torque

The approximate 19.8 N·m peak torque provides additional short-term torque capacity.

This is valuable during acceleration, rapid positioning and transient load conditions.

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19.4 Absolute Multi-Turn Feedback

The high-resolution absolute multi-turn encoder is one of the strongest features of this specific model.

It provides much more sophisticated position information than a basic open-loop motor system.

This is particularly useful in precision machinery.

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19.5 Low-Inertia Rotor

The low-inertia construction helps the motor respond quickly to changes in speed.

This makes the motor particularly suitable for high-cycle applications.

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19.6 Integrated Brake

The 24 V DC brake provides convenient shaft-holding capability.

This can simplify the design of vertical and positioning mechanisms.

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19.7 Keyed Shaft

The keyed shaft provides a positive mechanical connection for suitable couplings and transmission components.

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19.8 Flexible Connector Orientation

The right-angle connector can be rotated through approximately 180 degrees.

This provides additional flexibility when routing motor cables.

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20. Five Related Models from the Same MPL Series

The following models are useful for comparison within the same MPL low-inertia servo family.

The B310P through B430P models form a useful progression in motor output.

The B310P is appropriate for relatively light loads.

The B320P provides a step up in torque.

The B330P is suitable for medium-duty motion applications.

The B420P provides additional torque for higher-load systems.

The B430P represents the highest performance level in this particular group, with approximately 6.55 N·m continuous torque and 19.8 N·m peak torque.

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21. Five Recommended Same-Brand Models

For a broader selection, the following models are useful alternatives within the same industrial servo-motor portfolio.

The MPL-B430P-HK74AA is particularly close to the subject model in terms of motor size and basic torque/speed class, but its feedback configuration differs.

That difference is important. The MPL-B430P-MJ74AA uses absolute multi-turn feedback, while the HK74AA version uses a different feedback arrangement. Therefore, the two should not automatically be treated as plug-and-play replacements.

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22. Model Performance Comparison

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23. Recommended Model by Application

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24. Typical Motion-Control System

A typical application using this motor can be structured as:

Motion Controller

↓

Servo Drive

↓

MPL-B430P-MJ74AA

↓

Mechanical Coupling / Gearbox

↓

Machine Load

The encoder feedback is connected to the servo-control system so that the drive can monitor the motor’s actual movement.

For a positioning application, the operating process can be summarized as:

Position command → Acceleration → Controlled rotation → Encoder feedback → Position correction → Deceleration → Final positioning

This closed-loop approach allows the machine to maintain much better control over its movement than a conventional motor operated without position feedback.

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25. Advantages for High-Cycle Machinery

The MPL-B430P-MJ74AA is particularly well suited to high-cycle machinery because several characteristics work together.

The 5000 rpm speed allows rapid rotation.

The low rotor inertia supports rapid changes in speed.

The peak torque capability provides additional torque during acceleration.

The absolute multi-turn encoder provides detailed position feedback.

The 24 V DC brake provides shaft holding when required.

The keyed shaft provides a positive mechanical transmission connection.

These features make the motor suitable for machines that need to repeat the same motion many times during a production cycle.

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26. Advantages for Precision Positioning

Precision positioning requires more than simply having a powerful motor.

The servo system must know where the motor is, how quickly it is moving and whether the actual position matches the commanded position.

The absolute multi-turn encoder on the MPL-B430P-MJ74AA provides the feedback necessary for this type of operation.

This makes the motor particularly suitable for:

• Rotary tables
• Indexing mechanisms
• Automated assembly
• Inspection machines
• Material positioning
• Pick-and-place systems
• Synchronized machine axes

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27. Important Selection Considerations

Although the MPL-B430P-MJ74AA is a capable servo motor, selecting a motor solely by rated torque is not recommended.

The following factors should be considered together.

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28. MPL-B430P-MJ74AA vs. MPL-B430P-HK74AA

Because these two models are closely related, they are worth comparing directly.

This comparison shows why the complete catalog number is important.

The two motors can be similar in power, speed and frame size while still being different enough that they cannot simply be substituted without checking the servo drive and mechanical system.

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29. Overall Product Advantages

The main strengths of the MPL-B430P-MJ74AA can be summarized as follows:

High Speed

The 5000 rpm rated speed makes it suitable for fast rotary motion.

Low Inertia

The low-inertia rotor supports rapid acceleration and deceleration.

High Torque Density

The motor provides approximately 6.55 N·m continuous torque in a 115 mm frame.

High Peak Torque

The approximately 19.8 N·m peak torque is useful during acceleration and short-duration high-load conditions.

Absolute Multi-Turn Feedback

The high-resolution absolute feedback provides detailed motor position information.

Integrated Brake

The 24 V DC holding brake is useful for load-holding applications.

Keyed Shaft

The keyed shaft provides a positive mechanical connection.

Flexible Connector

The 180° rotatable right-angle connector helps simplify machine installation.

Compact Construction

The 115 mm frame and 76.2 mm magnetic stack provide a compact package relative to the motor’s output class.

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30. Final Product Summary

The MPL-B430P-MJ74AA is a 115 mm-frame, 5000 rpm, approximately 2.2 kW low-inertia brushless AC servo motor intended for demanding industrial motion-control applications.

Its approximately 6.55 N·m continuous torque and 19.8 N·m peak torque provide enough dynamic capability for a wide range of automated machinery.

The most distinctive feature of this particular model is its absolute multi-turn high-resolution encoder, using 1024 Sin/Cos cycles per revolution and Hiperface feedback.

The motor also combines:

• 5000 rpm speed
• 2.2 kW continuous output
• 6.55 N·m continuous torque
• Approximately 19.8 N·m peak torque
• Low rotor inertia
• 115 mm frame
• 76.2 mm magnetic stack
• Absolute multi-turn encoder
• 24 V DC holding brake
• Keyed shaft
• SpeedTec DIN connector
• Right-angle connector arrangement
• 180° connector rotation
• IEC metric mounting

For high-speed packaging machinery, automated assembly equipment, indexing systems, precision material handling, printing equipment and other high-cycle automation, this combination provides a strong balance between speed, torque, feedback resolution and dynamic response.

When selecting a replacement or equivalent model, the most important items to match are feedback type, shaft configuration, brake, connector, mounting dimensions, rated voltage, speed, continuous torque and peak torque. A motor with a similar appearance or the same B430P family designation should not automatically be considered electrically or mechanically interchangeable.