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MPL-B330P-SJ72AA Low-Inertia Servo Motor

1. Product Overview

The MPL-B330P-SJ72AA is a high-speed, low-inertia brushless AC rotary servo motor designed for industrial motion-control applications that require accurate positioning, rapid acceleration and deceleration, stable torque output, and closed-loop feedback.

It belongs to the MP-Series MPL low-inertia servo motor family and uses a 460 V class AC motor configuration. The B330P motor is designed for operation at up to 5000 RPM, with approximately 1.8 kW continuous rated power, 4.18 Nm continuous stall torque, and 11.1 Nm peak torque.

The SJ72AA configuration is particularly identifiable by its combination of a single-turn high-resolution encoder, keyed shaft extension, right-angle SpeedTEC DIN connector, 180° rotatable connector, and no integrated brake.

The motor uses a 100 mm IEC frame and a 76.2 mm magnet stack, making it a relatively compact motor for its 1.8 kW / 4.18 Nm performance class.

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2. Brand and Product Classification

Item	Specification
Brand	Allen-Bradley
Product Family	MP-Series Servo Motors
Product Series	MPL Low-Inertia Servo Motors
Motor Type	Brushless AC Rotary Servo Motor
Motor Construction	Permanent-Magnet Servo Motor
Model	MPL-B330P-SJ72AA
Voltage Class	460 V AC
Rated Speed	5000 RPM
Feedback	Single-turn high-resolution encoder
Shaft	Keyed shaft extension
Brake	No Brake
Connector	SpeedTEC DIN
Connector Type	Right-angle
Connector Rotation	180° rotatable
Mounting	IEC Metric
Frame Size	100 mm
Magnet Stack	76.2 mm
Rated Output	1.8 kW
Continuous Stall Torque	4.18 Nm
Peak Torque	11.1 Nm
Rotor Inertia	Approximately 0.00012 kg·m²
Approx. Weight	Approximately 5.05 kg
Main Application	Industrial servo motion control

The manufacturer’s product information identifies this exact model as a 460 V MPL servo motor with a 100 mm frame, 76.2 mm stack, 5000 RPM speed, single-turn high-resolution encoder, keyed shaft, right-angle rotatable SpeedTEC DIN connector, and no brake.

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3. Model Number Explanation

The model designation MPL-B330P-SJ72AA can be understood as a combination of the MPL motor family, motor size, speed class, feedback configuration, shaft configuration, connector/brake configuration, and product revision.

Model Section	Description
MPL	MPL low-inertia servo motor family
B	460 V class motor family
330	B330 motor frame / electromagnetic configuration
P	5000 RPM speed class
S	Single-turn high-resolution encoder
J	Keyed shaft extension
7	Right-angle SpeedTEC DIN connector, rotatable
2	No-brake configuration
AA	Product configuration / revision designation

The exact configuration information confirms the S feedback designation as a single-turn high-resolution encoder, J as the keyed shaft configuration, 7 as the right-angle rotatable connector configuration, and 2 as the no-brake configuration.

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4. Detailed Technical Specifications

Parameter	MPL-B330P-SJ72AA
Model	MPL-B330P-SJ72AA
Brand	Allen-Bradley
Series	MP-Series MPL
Product Type	Low-Inertia Brushless Servo Motor
Motor Type	AC Rotary Servo Motor
Voltage	460 V AC
Voltage Class	400/460 V class
Number of Phases	3 Phase
Rated Power	1.8 kW
Rated Speed	5000 RPM
Maximum Speed	5000 RPM
Continuous Stall Torque	4.18 Nm
Peak Torque	11.1 Nm
Rotor Inertia	0.00012 kg·m²
Feedback	Single-turn high-resolution encoder
Feedback Resolution	1024 cycles/rev Sin/Cos
Feedback Protocol	Hiperface
Shaft	Keyed shaft extension
Shaft Seal	No shaft seal
Brake	No brake
Connector	SpeedTEC DIN
Connector Position	Right-angle
Connector Rotation	180°
Mounting	IEC Metric flange
Frame Size	100 mm
Magnet Stack Length	76.2 mm
Approx. Weight	5.05 kg
Operating Temperature	Up to approximately 40°C
Duty	S1
Typical Protection	IP66 configuration
Main Use	Servo motion control

The published technical data identifies the motor as a 5000 RPM, 1.8 kW motor with 4.18 Nm continuous torque, 11.1 Nm peak torque, 0.00012 kg·m² rotor inertia, 100 mm frame size, and 76.2 mm magnet stack.

The exact model is also listed with a weight of approximately 5.05 kg in product-distributor technical data.

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5. Dimensions and Mechanical Parameters

The MPL-B330P-SJ72AA uses a 100 mm frame with a 76.2 mm magnet stack.

The 100 mm frame corresponds to approximately 3.94 inches, while the 76.2 mm magnet stack corresponds to exactly 3.0 inches.

Mechanical Parameter	Specification
Model	MPL-B330P-SJ72AA
IEC Frame Size	100 mm
Frame Size	3
Frame Size, Imperial	3.94 in.
Magnet Stack	76.2 mm
Magnet Stack, Imperial	3.0 in.
Shaft Type	Keyed
Shaft Extension	Keyed shaft
Shaft Seal	No shaft seal
Mounting	IEC Metric
Mounting Hole Style	Type FF / free mounting holes
Connector	Right-angle SpeedTEC DIN
Connector Rotation	180°
Brake	None
Approx. Weight	5.05 kg

The frame size and stack length describe the principal motor body configuration, but they should not be interpreted as the complete external envelope.

For machine design, the exact mechanical drawing should be used to determine the complete motor length, flange dimensions, shaft projection, connector clearance, mounting-hole locations, and cable-routing space.

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6. Motor Performance

The B330P motor class provides a rated speed of 5000 RPM.

Its continuous stall torque is approximately 4.18 Nm, while peak torque is approximately 11.1 Nm. The motor is rated at approximately 1.8 kW continuous output.

These characteristics make the motor suitable for applications where the machine requires relatively high rotational speed together with rapid changes in motor speed.

The approximately 0.00012 kg·m² rotor inertia is an important characteristic of the low-inertia MPL design. Lower rotor inertia can help the servo system accelerate and decelerate the motor rapidly when the motor, drive, mechanical load, and servo parameters are properly matched.

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7. Single-Turn High-Resolution Encoder

The SJ72AA configuration uses a single-turn high-resolution encoder.

The published technical information identifies the feedback as a 1024-cycle/revolution Sin/Cos encoder using Hiperface protocol.

The encoder provides the servo controller with motor-position feedback needed for closed-loop control.

In practical operation, the feedback system allows the drive to monitor motor position and speed while regulating torque and movement according to the commanded motion profile.

The single-turn configuration is appropriate for applications where accurate motor position within one revolution is required and where the machine’s overall motion architecture does not depend on an absolute multi-turn motor position.

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8. Keyed Shaft Configuration

The J designation identifies the keyed shaft configuration.

A keyed shaft is commonly used with compatible couplings, pulleys, gears, and other mechanical transmission components designed around a shaft key.

Shaft Parameter	Specification
Model	MPL-B330P-SJ72AA
Shaft Type	Keyed
Shaft Key	Yes
Shaft Seal	No shaft seal
Mechanical Connection	Compatible keyed coupling / transmission
Typical Use	Rotary transmission, gearboxes, pulleys, indexing mechanisms

A keyed shaft can be particularly convenient when the existing machine design already uses a standard key-and-hub transmission arrangement.

The coupling should nevertheless be selected according to shaft loading, speed, acceleration, alignment, radial load, axial load, and the manufacturer’s mechanical limits.

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9. No-Brake Configuration

The MPL-B330P-SJ72AA is a no-brake version.

This is an important distinction when comparing it with models such as the corresponding SJ74 configuration.

A no-brake motor is appropriate when the machine does not require a motor-mounted mechanical holding brake.

Brake Parameter	Specification
Model	MPL-B330P-SJ72AA
Brake	No brake
Holding Function	External system if required
Dynamic Stopping	Controlled through servo system
Suitable Applications	Horizontal axes and non-brake applications

If the machine has a vertical axis or another load that must remain mechanically held when servo torque is removed, a brake-equipped configuration or a separate mechanical holding solution may need to be considered.

The servo motor’s stopping function and a mechanical holding brake should not be considered interchangeable functions.

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10. SpeedTEC DIN Connector

The motor uses a right-angle SpeedTEC DIN connector.

The connector is designed to rotate approximately 180°, allowing the cable outlet direction to be adjusted to suit the machine layout.

This can be useful when the motor is installed in a confined space.

Instead of forcing the motor cable to project in a single fixed direction, the connector orientation can be selected to reduce interference with machine frames, guards, linear modules, gearboxes, or other equipment.

Connector Parameter	Specification
Connector Type	SpeedTEC DIN
Configuration	Right-angle
Rotation	180°
Connection	Quick-connect type
Primary Benefit	Flexible cable routing

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11. Low-Inertia Motor Design

The low-inertia design is one of the main characteristics of the MPL product family.

The B330P motor has approximately 0.00012 kg·m² rotor inertia.

A low-inertia rotor can reduce the amount of torque required to accelerate the motor itself.

This is particularly useful in machines that perform repeated movements, indexing cycles, rapid reversals, or frequent acceleration and deceleration.

Typical applications include packaging, cutting, indexing, electronic assembly, material handling, and other automated production machinery.

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12. Torque Characteristics

The B330P configuration provides approximately:

• 4.18 Nm continuous stall torque
• 11.1 Nm peak torque
• 1.8 kW continuous rated output
• 5000 RPM rated speed

These figures make the motor suitable for applications requiring a balance between speed and torque.

Performance Parameter	Value
Rated Speed	5000 RPM
Continuous Stall Torque	4.18 Nm
Peak Torque	11.1 Nm
Rated Output	1.8 kW
Rotor Inertia	0.00012 kg·m²

The continuous and peak torque values should not be interpreted as available at every operating speed. Actual torque capability varies with motor speed, drive current, operating temperature, duty cycle, and other system conditions.

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13. Product Series

The MPL-B330P-SJ72AA belongs to the following product hierarchy:

MP-Series → MPL Series → Low-Inertia Brushless Servo Motors → B330P → SJ72AA Configuration

The MPL family contains multiple motor sizes, speed ratings, feedback types, shaft configurations, and brake configurations.

The B330P is positioned in the approximately 1.8 kW / 4.18 Nm continuous torque class.

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14. Typical Applications

Packaging Machinery

Packaging equipment frequently requires fast and repetitive servo movements.

The MPL-B330P-SJ72AA can be used for indexing, product feeding, cutting, sealing, positioning, synchronization, and other rotary motion functions.

The 5000 RPM speed capability can be useful in high-cycle packaging mechanisms where the mechanical transmission is appropriately designed.

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Material Handling

The motor can be used in positioning and transfer systems.

Typical examples include conveyor positioning, indexing tables, transfer units, rotary mechanisms, and automated material movement.

The high-resolution encoder provides feedback required for closed-loop motion control.

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Machine Tools

Servo motors are widely used for controlled machine-tool axes.

The B330P can be considered for feed mechanisms, indexing axes, auxiliary rotary axes, and other applications requiring controlled acceleration and accurate positioning.

The keyed shaft is convenient for mechanical systems designed around conventional keyed transmission components.

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Electronic Assembly

Electronic assembly machines often require repeated high-speed movements with accurate positioning.

The low rotor inertia and 5000 RPM capability can be useful for indexing, feeding, positioning, and rotary assembly functions.

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Printing and Converting

Printing and converting machinery frequently requires synchronization between multiple machine axes.

Servo motors can be used to control rollers, feeders, cutting systems, tension-control mechanisms, and registration functions.

The encoder feedback allows the servo controller to continuously monitor motor position.

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Automated Assembly

The motor can be used for rotary indexing mechanisms, assembly stations, transfer mechanisms, and precision positioning equipment.

Its 1.8 kW rating makes it suitable for applications requiring more torque than smaller B310P and B320P motors while remaining below larger B420P and B430P configurations.

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General Factory Automation

Other potential applications include:

• Rotary indexing tables
• Automated feeders
• Pick-and-place equipment
• Material transfer mechanisms
• High-speed positioning systems
• Automated inspection machines
• Cutting mechanisms
• Dispensing systems
• Industrial production machinery
• Servo-controlled rotary axes

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15. Main Product Advantages

15.1 5000 RPM High-Speed Operation

The motor is designed for operation at up to 5000 RPM.

This makes it suitable for applications where high motor speed contributes to faster machine cycles.

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15.2 Low Rotor Inertia

The rotor inertia of approximately 0.00012 kg·m² supports fast dynamic response.

This is particularly useful for repetitive machine cycles with frequent speed changes.

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15.3 1.8 kW Output

The B330P provides approximately 1.8 kW continuous rated power.

This places it between smaller and larger MPL motor configurations and makes it suitable for medium-duty servo applications.

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15.4 4.18 Nm Continuous Torque

The motor provides approximately 4.18 Nm continuous stall torque.

This gives it considerably more torque capability than smaller B310P and B320P configurations.

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15.5 11.1 Nm Peak Torque

The approximately 11.1 Nm peak torque capability provides additional dynamic torque for acceleration, deceleration, and short-duration high-load events.

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15.6 High-Resolution Feedback

The single-turn high-resolution encoder provides the feedback needed for closed-loop servo operation.

The published specification identifies a Sin/Cos 1024-cycle/revolution feedback system using Hiperface protocol.

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15.7 Keyed Shaft

The keyed shaft makes the motor suitable for machine designs using traditional keyed mechanical transmission components.

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15.8 Flexible Connector Orientation

The right-angle connector with approximately 180° rotational flexibility helps simplify cable routing in compact machinery.

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15.9 Compact 100 mm Frame

The 100 mm frame provides a relatively compact mechanical package for the motor’s 1.8 kW performance level.

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16. Electrical and Mechanical Parameter Summary

Category	Parameter	Specification
Electrical	Voltage	460 V AC
Electrical	Rated Power	1.8 kW
Electrical	Rated Speed	5000 RPM
Electrical	Continuous Torque	4.18 Nm
Electrical	Peak Torque	11.1 Nm
Feedback	Type	Single-turn high-resolution encoder
Feedback	Resolution	1024 cycles/rev
Feedback	Protocol	Hiperface
Mechanical	Frame	100 mm
Mechanical	Magnet Stack	76.2 mm
Mechanical	Shaft	Keyed
Mechanical	Shaft Seal	None
Mechanical	Brake	None
Mechanical	Connector	SpeedTEC DIN
Mechanical	Connector Angle	Right-angle
Mechanical	Connector Rotation	180°
Mechanical	Mounting	IEC Metric
Mechanical	Approx. Weight	5.05 kg
Motor	Rotor Inertia	0.00012 kg·m²
Environment	Operating Temperature	Approximately 0 to 40°C
Duty	Operating Duty	S1

The technical information identifies the motor as a 460 V, three-phase, 5000 RPM servo motor with 1.8 kW rated power, 4.18 Nm nominal torque, 100 mm frame size, and 76.2 mm stack.

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17. Five Related / Same-Series Models

The following models are closely related to the MPL-B330P-SJ72AA and can be useful when selecting between different feedback, shaft, and brake configurations.

Model	Feedback	Shaft	Brake	Speed	Continuous Torque	Peak Torque	Output	Frame / Stack
MPL-B330P-RJ72AA	Resolver	Keyed	No Brake	5000 RPM	4.18 Nm	11.1 Nm	1.8 kW	100 mm / 76.2 mm
MPL-B330P-RJ74AA	Resolver	Keyed	24 V DC	5000 RPM	4.18 Nm	11.1 Nm	1.8 kW	100 mm / 76.2 mm
MPL-B330P-RK72AA	Resolver	Keyless	No Brake	5000 RPM	4.18 Nm	11.1 Nm	1.8 kW	100 mm / 76.2 mm
MPL-B330P-RK74AA	Resolver	Keyless	24 V DC	5000 RPM	4.18 Nm	11.1 Nm	1.8 kW	100 mm / 76.2 mm
MPL-B330P-SJ74AA	Single-turn high-resolution encoder	Keyed	24 V DC	5000 RPM	4.18 Nm	11.1 Nm	1.8 kW	100 mm / 76.2 mm

The exact B330P family provides multiple combinations of resolver or encoder feedback, keyed or keyless shafts, and brake or no-brake configurations. The manufacturer’s configurator confirms the SJ72AA configuration as the single-turn encoder, keyed-shaft, no-brake version.

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18. Five Representative Same-Brand Models

The following models represent useful comparisons within the same brand and MPL low-inertia motor family.

Model	Rated Speed	Continuous Torque	Peak Torque	Power	Rotor Inertia	Approx. Weight	Frame / Stack
MPL-B310P-SJ72AA	5000 RPM	1.58 Nm	3.61 Nm	0.77 kW	0.000044 kg·m²	Approx. 2.4 kg	100 mm / 25.4 mm
MPL-B320P-SJ72AA	5000 RPM	3.05 Nm	7.91 Nm	1.5 kW	0.000078 kg·m²	Approx. 4.5 kg	100 mm / 50.8 mm
MPL-B330P-SJ72AA	5000 RPM	4.18 Nm	11.1 Nm	1.8 kW	0.00012 kg·m²	Approx. 5.05 kg	100 mm / 76.2 mm
MPL-B420P-SJ72AA	5000 RPM	4.74 Nm	13.5 Nm	1.9 kW	0.00026 kg·m²	Approx. 6.4 kg	115 mm class / 50.8 mm
MPL-B430P-SJ72AA	5000 RPM	6.55 Nm	19.8 Nm	2.2 kW	0.00038 kg·m²	Approx. 9.2 kg	115 mm class / longer stack

The B310P through B430P models illustrate the increasing torque and power range available within this group of low-inertia servo motors. Published historical selection data also lists 5000 RPM, 4.18 Nm and 1.8 kW for the B330P-SJ72AA configuration.

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19. Comparison of MPL Motor Sizes

Model	Speed	Continuous Torque	Peak Torque	Output	Rotor Inertia	Approx. Weight
MPL-B310P-SJ72AA	5000 RPM	1.58 Nm	3.61 Nm	0.77 kW	0.000044 kg·m²	2.4 kg
MPL-B320P-SJ72AA	5000 RPM	3.05 Nm	7.91 Nm	1.5 kW	0.000078 kg·m²	4.5 kg
MPL-B330P-SJ72AA	5000 RPM	4.18 Nm	11.1 Nm	1.8 kW	0.00012 kg·m²	5.05 kg
MPL-B420P-SJ72AA	5000 RPM	4.74 Nm	13.5 Nm	1.9 kW	0.00026 kg·m²	6.4 kg
MPL-B430P-SJ72AA	5000 RPM	6.55 Nm	19.8 Nm	2.2 kW	0.00038 kg·m²	9.2 kg

The B330P sits between the smaller B310P/B320P configurations and the larger B420P/B430P configurations in terms of torque and power.

This makes it a useful middle-range configuration for machines requiring more torque than the B320P but not necessarily requiring the larger motor capacity of the B420P or B430P.

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20. SJ72AA Compared With SJ74AA

The SJ72AA and SJ74AA configurations are closely related.

The most important difference is the brake.

Parameter	MPL-B330P-SJ72AA	MPL-B330P-SJ74AA
Feedback	Single-turn high-resolution encoder	Single-turn high-resolution encoder
Shaft	Keyed	Keyed
Speed	5000 RPM	5000 RPM
Continuous Torque	4.18 Nm	4.18 Nm
Peak Torque	11.1 Nm	11.1 Nm
Output	1.8 kW	1.8 kW
Frame	100 mm	100 mm
Stack	76.2 mm	76.2 mm
Brake	No Brake	24 V DC Brake
Connector	Right-angle SpeedTEC DIN	Right-angle SpeedTEC DIN

For an axis that does not need a motor-mounted holding brake, the SJ72AA configuration provides the no-brake arrangement.

For a machine axis that requires an integrated 24 V DC holding brake, the corresponding brake-equipped configuration should be considered.

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21. SJ72AA Compared With RJ72AA

Another useful comparison is between the single-turn encoder version and the resolver version.

Parameter	MPL-B330P-SJ72AA	MPL-B330P-RJ72AA
Feedback	Single-turn high-resolution encoder	Resolver
Shaft	Keyed	Keyed
Brake	No Brake	No Brake
Speed	5000 RPM	5000 RPM
Continuous Torque	4.18 Nm	4.18 Nm
Peak Torque	11.1 Nm	11.1 Nm
Output	1.8 kW	1.8 kW
Frame	100 mm	100 mm
Stack	76.2 mm	76.2 mm
Main Difference	Encoder feedback	Resolver feedback

The mechanical size and basic motor performance can be very similar, while the feedback technology is different.

The feedback type should therefore be selected according to the servo drive, control architecture, machine requirements, and replacement compatibility.

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22. Application Selection Guide

The MPL-B330P-SJ72AA is particularly suitable when the machine requires:

• 5000 RPM operation
• Approximately 1.8 kW continuous motor power
• Approximately 4.18 Nm continuous torque
• Approximately 11.1 Nm peak torque
• Low rotor inertia
• Single-turn high-resolution feedback
• Keyed shaft connection
• No integrated motor brake
• Right-angle cable connection
• Flexible connector orientation
• 100 mm frame mounting
• 76.2 mm magnetic stack

This configuration is especially relevant for horizontal rotary axes, indexing mechanisms, feeding systems, packaging machinery, and other automated machinery where a brake is not required.

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23. Servo Drive Compatibility

The MPL-B330P-SJ72AA is designed as part of an integrated servo motion-control system.

Published technical data identifies compatibility with several servo drive families, including various Kinetix and Ultra servo systems.

However, compatibility should always be checked using the exact motor catalog number, feedback type, drive firmware, motor database, voltage class, and required motor cable.

Drive Selection Factor	Requirement
Motor Voltage	Compatible with 460 V class motor
Motor Power	Approximately 1.8 kW
Continuous Torque	4.18 Nm
Peak Torque	11.1 Nm
Feedback	Single-turn high-resolution encoder
Feedback Protocol	Hiperface
Rated Speed	5000 RPM
Brake	Not required
Shaft	Keyed
Duty	S1 / application dependent

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24. Installation Considerations

The motor should be installed on a rigid and accurately machined mounting surface.

Correct coupling alignment is important because excessive angular or parallel misalignment can increase bearing loading and produce vibration.

The keyed shaft should be matched with a properly selected coupling or mechanical transmission component.

The right-angle connector provides additional flexibility for cable routing, but sufficient clearance should still be provided around the connector.

The motor cable should be routed away from excessive mechanical stress, sharp edges, high-temperature surfaces, and sources of unnecessary electrical interference.

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25. Maintenance Recommendations

Routine maintenance can help preserve reliable servo performance.

Important inspection points include:

• Motor mounting bolts
• Shaft coupling
• Mechanical alignment
• Encoder cable
• Motor power cable
• Connector condition
• Motor temperature
• Bearing noise
• Mechanical vibration
• Load conditions
• Servo drive fault history

Because this is a servo motor, abnormal motion can originate from either the motor or the mechanical/control system.

For example, excessive vibration can result from coupling misalignment, mechanical imbalance, incorrect servo tuning, bearing wear, load problems, or feedback issues.

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26. Troubleshooting Table

Problem	Possible Cause	Recommended Check
Motor does not rotate	Drive enable problem	Check drive status
Motor faults during acceleration	Excessive load	Check load torque and acceleration
Position error	Feedback problem	Check encoder and feedback wiring
Excessive vibration	Misalignment	Check coupling and mounting
Motor overheating	Excessive load or duty cycle	Check operating profile
Encoder fault	Feedback cable or connector	Inspect feedback circuit
Excessive noise	Mechanical issue	Check bearings and coupling
Poor positioning	Tuning or feedback issue	Check servo parameters
Unexpected stopping	Drive protection	Check diagnostic codes
Low acceleration performance	Insufficient current or excessive inertia	Check drive sizing and load inertia

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27. Advantages in Machine Design

The MPL-B330P-SJ72AA provides a balanced combination of speed, torque, feedback resolution, and mechanical flexibility.

Its 5000 RPM operating capability is suitable for high-speed machine axes.

Its 1.8 kW power rating provides more capacity than smaller MPL configurations.

Its 4.18 Nm continuous torque and 11.1 Nm peak torque provide both sustained torque capability and additional short-duration dynamic torque.

The approximately 0.00012 kg·m² rotor inertia supports rapid speed changes.

The single-turn high-resolution encoder provides the feedback required for closed-loop servo operation.

The keyed shaft simplifies integration with conventional keyed mechanical transmission systems.

The right-angle 180° rotatable connector helps improve cable-routing flexibility.

The no-brake configuration keeps the motor configuration focused on applications where a holding brake is not required.

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28. Typical Industries

Industry	Typical Application
Packaging	Feeding, indexing, cutting, sealing
Material Handling	Transfer and positioning
Machine Tools	Feed and rotary axes
Electronics	Assembly and positioning
Printing	Roller control and registration
Converting	Cutting and feeding
Factory Automation	Servo positioning
Assembly Machinery	Indexing and transfer
Inspection Systems	Rotary positioning
General Machinery	High-speed servo axes

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29. Product Selection Checklist

Before selecting the MPL-B330P-SJ72AA for a machine, the following parameters should be checked.

Selection Item	Target / Requirement
Motor Voltage	460 V class
Rated Power	1.8 kW
Continuous Torque	4.18 Nm
Peak Torque	11.1 Nm
Maximum / Rated Speed	5000 RPM
Feedback	Single-turn high-resolution encoder
Shaft	Keyed
Brake	None
Frame	100 mm
Stack	76.2 mm
Rotor Inertia	0.00012 kg·m²
Weight	Approx. 5.05 kg
Mounting	IEC Metric
Connector	Right-angle SpeedTEC DIN
Connector Rotation	180°
Operating Temperature	Approximately 0–40°C
Duty	S1
Mechanical Load	Must remain within allowable limits

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30. Quick Reference Product Table

Parameter	Specification
Model	MPL-B330P-SJ72AA
Brand	Allen-Bradley
Series	MP-Series MPL
Product Type	Low-Inertia Brushless AC Servo Motor
Voltage	460 V AC
Rated Power	1.8 kW
Rated Speed	5000 RPM
Continuous Stall Torque	4.18 Nm
Peak Torque	11.1 Nm
Rotor Inertia	0.00012 kg·m²
Feedback	Single-turn high-resolution encoder
Resolution	1024 cycles/rev
Protocol	Hiperface
Shaft	Keyed
Shaft Seal	No shaft seal
Brake	No brake
Connector	SpeedTEC DIN
Connector Style	Right-angle
Connector Rotation	180°
Frame Size	100 mm
Magnet Stack	76.2 mm
Mounting	IEC Metric
Mounting Holes	Type FF
Approx. Weight	5.05 kg
Operating Temperature	Approx. 0–40°C
Duty	S1
Main Application	Industrial servo motion

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31. Final Product Description

The MPL-B330P-SJ72AA is a 5000 RPM low-inertia brushless AC rotary servo motor designed for industrial automation and precision motion-control applications.

Its main configuration consists of a 460 V class motor, 100 mm frame, 76.2 mm magnet stack, 5000 RPM rated speed, 1.8 kW rated output, 4.18 Nm continuous stall torque, 11.1 Nm peak torque, and approximately 0.00012 kg·m² rotor inertia.

The motor uses a single-turn high-resolution encoder with Sin/Cos feedback and Hiperface protocol, providing the closed-loop feedback necessary for precise servo control.

The keyed shaft is well suited to machines using conventional keyed couplings and mechanical transmission components.

The motor does not include an integrated brake, making the SJ72AA configuration appropriate for applications where the servo system or an external mechanical arrangement provides the required stopping and holding functions.

The right-angle SpeedTEC DIN connector, with approximately 180° rotational flexibility, provides useful installation flexibility when cable routing space is restricted.

With its combination of high rotational speed, moderate-to-high torque capacity, low rotor inertia, high-resolution feedback, keyed shaft, and compact 100 mm frame, the MPL-B330P-SJ72AA is well suited to packaging equipment, material-handling machinery, automated assembly systems, machine tools, indexing mechanisms, printing and converting machinery, electronic manufacturing equipment, and other industrial servo applications.

For replacement or new-machine selection, the most important points to verify are feedback type, shaft configuration, brake requirement, motor voltage, continuous torque, peak torque, speed, load inertia, mechanical dimensions, mounting arrangement, connector configuration, and servo-drive compatibility.