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MPL-B330P-HK74AA Servo Motor — Detailed Product Information, Technical Parameters, Applications and Related Models

1. Product Overview

The MPL-B330P-HK74AA is a high-speed, low-inertia brushless servo motor designed for industrial motion-control applications that require accurate positioning, rapid acceleration and deceleration, stable speed regulation, and repeatable machine movement.

The motor belongs to the MP-Series MPL low-inertia servo motor family and is designed for 400 V-class servo systems. It uses a 100 mm frame size and a 76.2 mm magnetic stack length, providing a compact motor package for its performance class.

The motor has a rated speed of approximately 5000 rpm, making it suitable for automated machinery with short cycle times, frequent indexing, rapid positioning, and repeated acceleration and deceleration.

The MPL-B330P-HK74AA combines the B330P motor performance class with a keyless shaft configuration and a 24 V DC holding brake. This combination distinguishes it from related keyed-shaft and non-brake versions in the same motor family.

The keyless shaft is designed for use with an appropriate clamping or keyless coupling arrangement. This can be useful in machine designs where the mechanical transmission system does not use a conventional shaft key.

The integrated 24 V DC brake provides shaft-holding capability when the machine requires the motor to remain mechanically held under certain operating conditions.

The motor also uses a 2000-line incremental encoder for closed-loop feedback. The feedback system allows the servo drive to monitor motor position and speed and adjust the motor accordingly.

A right-angle SpeedTEC DIN connector provides a practical connection arrangement for industrial machinery, while the rotatable connector design provides additional flexibility when routing cables inside a machine.

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2. Brand and Product Series

Item	Specification
Brand	Allen-Bradley
Product Family	MP-Series
Product Series	MPL Low-Inertia Servo Motors
Model	MPL-B330P-HK74AA
Motor Type	Brushless AC Permanent-Magnet Servo Motor
Product Category	Rotary Servo Motor
Voltage Class	400 V AC Class
Nominal Voltage	460 V AC Class
Frame Size	100 mm
Frame Size in Inches	Approx. 3.94 in
Magnetic Stack Length	76.2 mm
Stack Length in Inches	3.0 in
Rated Speed	5000 rpm
Feedback	2000-Line Incremental Encoder
Brake	24 V DC Holding Brake
Shaft Configuration	Keyless Shaft Extension
Shaft Seal	No Shaft Seal
Connector	SpeedTEC DIN Connector
Connector Configuration	Right-Angle
Connector Rotation	Approximately 180°
Mounting	IEC Metric
Motor Design	Low-Inertia
Approximate Weight	6.04 kg

The MPL series is intended for industrial servo applications where dynamic response and high-speed operation are important.

The low-inertia construction allows the motor to respond quickly to changes in the commanded motion profile.

The B330P size provides a middle range of motor capacity within the high-speed MPL family. It offers substantially more torque than smaller B310P and B320P motors while remaining more compact than larger B430P and higher-capacity motors.

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3. Detailed Technical Parameters

Parameter	Specification
Model	MPL-B330P-HK74AA
Product Family	MP-Series
Product Series	MPL Low-Inertia Servo Motor
Motor Type	Brushless Permanent-Magnet AC Servo
Voltage Class	400 V AC
Nominal Voltage Class	460 V AC
Rated Speed	5000 rpm
Continuous Torque	Approx. 4.18 N·m
Peak Torque	Approx. 11.1 N·m
Rated Output Power	Approx. 1.8 kW
Feedback	2000-Line Incremental Encoder
Encoder Type	Incremental Encoder
Brake	24 V DC Holding Brake
Shaft Type	Keyless
Shaft Seal	No Shaft Seal
Frame Size	100 mm
Frame Size	3.94 in
Magnetic Stack Length	76.2 mm
Magnetic Stack Length	3.0 in
Rotor Inertia	Approx. 0.00012 kg·m²
Connector Type	SpeedTEC DIN
Connector Position	Right-Angle
Connector Rotation	Approx. 180°
Mounting Standard	IEC Metric
Mounting Hole Configuration	Free Mounting Holes
Motor Construction	Low-Inertia
Approximate Weight	6.04 kg
Servo Control	Closed-Loop
Typical Speed Class	High-Speed
Main Application	Industrial Motion Control

The motor’s approximately 4.18 N·m continuous torque provides the torque capacity for sustained operation under suitable thermal and application conditions.

The approximately 11.1 N·m peak torque provides additional short-duration capacity for acceleration, deceleration, rapid indexing, and other transient motion requirements.

The approximately 1.8 kW output power places the motor in a useful medium-power range for industrial automation machinery.

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4. Mechanical Dimensions

The MPL-B330P-HK74AA uses a 100 mm frame and a 76.2 mm magnetic stack.

Mechanical Parameter	Specification
Model	MPL-B330P-HK74AA
Frame Size	100 mm
Frame Size	3.94 in
Magnetic Stack Length	76.2 mm
Stack Length	3.0 in
Shaft Configuration	Keyless
Shaft Seal	None
Mounting Type	IEC Metric
Mounting Hole Style	Free Mounting Holes
Connector Type	SpeedTEC DIN
Connector Style	Right-Angle
Connector Rotation	Approx. 180°
Integrated Brake	24 V DC
Approximate Weight	6.04 kg

The 100 mm frame dimension provides the main mechanical classification of the motor.

The 76.2 mm magnetic stack length corresponds to a 3.0-inch stack configuration.

The actual overall motor envelope includes the mounting flange, shaft extension, brake assembly, connector, and other mechanical features. Therefore, the frame size and stack length should not be treated as the complete overall motor length.

For equipment replacement or machine redesign, the available mounting space should be checked against the complete mechanical configuration.

Particular attention should be paid to:

• Motor flange dimensions
• Mounting-hole spacing
• Shaft diameter
• Shaft extension
• Keyless coupling dimensions
• Motor body length
• Brake clearance
• Connector clearance
• Cable-routing space

The approximate motor weight is 6.04 kg. This weight should be considered when the motor is mounted on a moving axis or a lightweight mechanical structure.

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5. Electrical Characteristics

The MPL-B330P-HK74AA is intended for a 400 V-class servo system and operates in the 460 V AC class.

The electrical configuration is suitable for industrial servo drives designed for compatible MPL motor systems.

The motor’s high-speed capability allows it to operate at approximately 5000 rpm rated speed.

The motor should always be matched with an appropriate servo drive based on voltage, current, feedback, motor identification, control requirements, and application duty cycle.

The motor is not intended to operate as a simple stand-alone AC motor.

It is designed to operate as part of a closed-loop servo system consisting of the motor, feedback system, servo drive, motion controller, power supply, and mechanical load.

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6. Servo Feedback System

The MPL-B330P-HK74AA uses a 2000-line incremental encoder.

The encoder provides feedback information to the servo control system.

The feedback signal is used to determine motor movement and support closed-loop control.

Typical functions supported by the feedback system include:

• Position control
• Speed regulation
• Motion synchronization
• Acceleration control
• Deceleration control
• Position correction
• Repetitive indexing
• Dynamic motion control
• Servo error monitoring

The encoder is particularly useful in automated machinery where the motor must repeatedly move to a defined position.

For example, a packaging machine may require a motor to move a product a specific distance, stop, reverse direction, and repeat the same movement thousands of times.

The closed-loop feedback system allows the servo drive to continuously monitor the motor’s actual movement rather than relying only on the commanded position.

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7. Keyless Shaft Configuration

The MPL-B330P-HK74AA uses a keyless shaft.

This is one of the important differences between this model and related keyed-shaft configurations.

A keyless shaft does not use a traditional rectangular shaft key for mechanical torque transmission.

Instead, an appropriate clamping coupling or keyless mechanical connection is used.

This arrangement can provide a clean mechanical interface and can be useful for machinery designed around clamping-type couplings.

Potential benefits include:

• Flexible coupling selection
• Smooth shaft interface
• Simplified mechanical integration
• Reduced dependence on shaft-key dimensions
• Suitable connection for clamping couplings
• Convenient installation for certain machine designs

When selecting a replacement motor, the shaft configuration should be checked carefully.

A keyed-shaft motor and a keyless-shaft motor may have the same frame size and power rating but still require different mechanical couplings.

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8. Integrated 24 V DC Holding Brake

The MPL-B330P-HK74AA includes a 24 V DC holding brake.

The brake is designed to provide mechanical holding capability when the motor is not actively producing torque.

This is particularly useful for machine axes where the motor shaft needs to remain stationary under certain conditions.

Typical applications include:

• Vertical positioning axes
• Lifting mechanisms
• Z-axis systems
• Ball-screw vertical axes
• Material-handling systems
• Automated assembly mechanisms
• Machine-tool positioning axes
• Gravity-loaded mechanisms

The brake should be treated primarily as a holding device.

It should not automatically be considered a replacement for a dedicated safety brake or emergency stopping system.

For vertical applications, the complete machine should include suitable provisions to prevent uncontrolled movement if electrical power, servo control, or brake operation is lost.

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9. High-Speed Operation

The approximately 5000 rpm rated speed is one of the main performance characteristics of the motor.

High rotational speed can help reduce cycle time and can provide flexibility in mechanical transmission design.

Depending on the machine configuration, the motor can be connected directly to a rotary mechanism or coupled to a gearbox, belt system, ball screw, or other transmission.

High-speed operation is especially useful in:

• Packaging
• Indexing
• Assembly
• Printing
• Converting
• Inspection
• Material handling
• High-speed positioning

The actual operating speed must remain within the limits of the complete motor-drive system and the mechanical transmission.

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10. Low-Inertia Design

The motor uses a low-inertia rotor with an approximate rotor inertia of 0.00012 kg·m².

Low rotor inertia reduces the amount of torque required to accelerate the motor itself.

This characteristic is especially useful in machines that repeatedly change speed.

A typical high-cycle motion profile may include:

1. Rapid acceleration
2. High-speed movement
3. Controlled deceleration
4. Stop
5. Position correction
6. Reverse movement
7. Repetition

The low-inertia motor design is well suited to this type of operation when the motor and machine load are correctly matched.

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11. Product Applications

11.1 Packaging Machinery

The MPL-B330P-HK74AA is suitable for many packaging-machine motion axes.

Packaging equipment often requires fast and repeatable movement.

Possible applications include:

• Product indexing
• Film feeding
• Packaging material positioning
• Rotary cutting
• Sealing mechanisms
• Conveyor synchronization
• Product transfer
• Feeding mechanisms
• Indexing tables
• Pick-and-place systems

The high-speed motor and encoder feedback are well suited to short-cycle packaging processes.

The holding brake can also be useful when an axis must remain mechanically held during certain machine conditions.

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12. Assembly Machinery

Automated assembly equipment requires controlled positioning of tools, workpieces, fixtures, and components.

The motor can be used for:

• Linear positioning
• Rotary positioning
• Transfer mechanisms
• Component insertion
• Fixture movement
• Indexing systems
• Pick-and-place mechanisms
• Automated production stations

The low-inertia characteristics can help improve dynamic response in machines with frequent positioning cycles.

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13. Material-Handling Equipment

The motor can be used in material-handling machinery where controlled movement and positioning are required.

Potential applications include:

• Transfer axes
• Automated conveyors
• Sorting mechanisms
• Product positioning
• Loading systems
• Unloading systems
• Rotary transfer mechanisms
• Pick-and-place equipment

The integrated brake can be useful in certain vertical or gravity-loaded applications when correctly incorporated into the machine’s safety and control system.

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14. Machine Tools

The motor can be used for controlled machine-tool motion.

Potential applications include:

• Feed mechanisms
• Positioning axes
• Rotary positioning
• Auxiliary axes
• Automated tool positioning
• Loading and unloading systems
• Indexing mechanisms

The high-speed capability can help reduce positioning time where the machine mechanics permit high-speed operation.

The low-inertia design can also be useful for machines requiring rapid movement between positions.

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15. Printing and Converting Machinery

Printing and converting machinery frequently requires accurate synchronization between several rotary and linear axes.

The MPL-B330P-HK74AA can be considered for:

• Feed rollers
• Web handling
• Material positioning
• Cutting systems
• Indexing mechanisms
• Roll positioning
• Registration-related motion
• Tension-control mechanisms

The actual suitability depends on the required continuous torque, peak torque, speed, load inertia, and duty cycle.

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16. Inspection and Test Equipment

Automated inspection systems often require fast movement between multiple inspection positions.

The motor can be used for:

• Inspection tables
• Rotary fixtures
• Camera positioning
• Product indexing
• Test fixtures
• Linear positioning stages
• Automated measurement systems

The encoder feedback provides the closed-loop position information needed for repeatable motion.

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17. Advantages of the MPL-B330P-HK74AA

17.1 High Rated Speed

The approximately 5000 rpm rated speed provides strong capability for high-speed automated machinery.

This can be useful when machine cycle time is closely related to motor speed.

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17.2 Low Rotor Inertia

The low-inertia design provides good dynamic response.

It is particularly useful in applications where the motor repeatedly accelerates and decelerates.

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17.3 4.18 N·m Continuous Torque

The approximately 4.18 N·m continuous torque provides useful sustained torque for medium-duty servo applications.

This makes the motor suitable for a broad range of automated machine axes.

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17.4 11.1 N·m Peak Torque

The approximately 11.1 N·m peak torque gives the motor additional short-duration torque capability.

This is useful for rapid acceleration, deceleration, indexing, and transient load conditions.

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17.5 1.8 kW Power Class

The approximately 1.8 kW power rating places the motor in a useful medium-power range.

It is more powerful than smaller B310P and B320P models while remaining more compact than higher-capacity MPL motors.

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17.6 Integrated Holding Brake

The 24 V DC brake adds mechanical holding capability.

This is particularly useful for applications where the shaft must remain stationary when the servo is not actively generating torque.

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17.7 Keyless Shaft

The keyless shaft allows integration with compatible clamping couplings.

For machines designed around keyless mechanical connections, this can be a practical advantage.

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17.8 Compact 100 mm Frame

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

This can be useful in multi-axis machinery where several motors must be installed in a limited area.

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17.9 Flexible Connector Position

The right-angle connector and approximately 180° rotation capability provide flexibility when routing cables.

This is useful in machines with restricted rear clearance.

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18. Connector and Cable Configuration

The motor uses a SpeedTEC DIN right-angle connector.

The connector can be rotated to accommodate different cable-routing directions.

This feature can simplify installation in compact machine frames.

When designing the installation, sufficient clearance should be provided for:

• Connector installation
• Cable bending radius
• Cable movement
• Maintenance access
• Connector removal
• Adjacent components

The motor cable should not be routed in a manner that causes excessive mechanical tension at the connector.

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19. Installation Considerations

Before installing the MPL-B330P-HK74AA, the mechanical and electrical requirements of the complete system should be checked.

The servo drive should be compatible with the motor’s voltage class and feedback system.

The mounting surface should be rigid and properly aligned.

The motor flange should be securely fastened.

The keyless coupling should be installed according to its mechanical specifications.

The motor shaft should be aligned with the driven component.

Excessive radial and axial shaft loading should be avoided.

The brake wiring should be correctly integrated into the servo control system.

The feedback cable should be protected from excessive electrical noise and mechanical stress.

The connector should remain securely locked during operation.

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20. Load and Inertia Matching

Motor selection should not be based only on rated power.

The machine designer should evaluate the complete load system.

Important factors include:

• Motor rotor inertia
• Load inertia
• Gearbox ratio
• Pulley diameter
• Ball-screw pitch
• Coupling inertia
• Acceleration time
• Deceleration time
• Operating speed
• Continuous torque
• Peak torque
• Duty cycle
• Repetition rate

The approximately 0.00012 kg·m² rotor inertia of the motor should be considered together with the reflected inertia of the machine load.

For high-speed positioning applications, the relationship between motor inertia and reflected load inertia can have a significant effect on servo response.

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21. Maintenance Requirements

Routine maintenance should include inspection of the motor housing, mounting hardware, coupling, connector, cables, and driven machine.

The motor should be checked for abnormal vibration.

Unusual vibration can indicate:

• Coupling misalignment
• Mechanical looseness
• Bearing problems
• Load imbalance
• Excessive shaft loading
• Mounting problems
• Transmission problems

The motor temperature should also be monitored.

Unexpected temperature increases can be caused by excessive load, poor ventilation, incorrect servo tuning, excessive duty cycle, mechanical friction, or other system problems.

The keyless coupling should be inspected according to the coupling manufacturer’s requirements.

The brake should be periodically checked for proper operation if the application depends on the brake for shaft holding.

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22. Maintenance Inspection Table

Inspection Item	Recommended Check
Motor Housing	Check for damage and abnormal temperature
Mounting Bolts	Check for looseness
Motor Flange	Check alignment and mounting condition
Shaft	Check for wear or damage
Keyless Coupling	Check clamping condition
Bearings	Check for abnormal noise or vibration
Encoder Cable	Check insulation and mechanical condition
Power Cable	Check cable and connector condition
Feedback Connector	Check secure connection
Brake	Check holding operation
Vibration	Monitor for abnormal changes
Temperature	Check operating temperature
Servo Drive	Review alarms and operating data
Machine Load	Check for unexpected torque increase
Cable Routing	Check for mechanical interference

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23. Related MPL-B330P Models

The following models are closely related to the MPL-B330P-HK74AA.

Model	Frame Size	Stack Length	Rated Speed	Continuous Torque	Peak Torque	Power	Brake	Shaft
MPL-B330P-HJ72AA	100 mm	76.2 mm	5000 rpm	Approx. 4.18 N·m	Approx. 11.1 N·m	Approx. 1.8 kW	No Brake	Keyed
MPL-B330P-HJ74AA	100 mm	76.2 mm	5000 rpm	Approx. 4.18 N·m	Approx. 11.1 N·m	Approx. 1.8 kW	24 V DC Brake	Keyed
MPL-B330P-HK72AA	100 mm	76.2 mm	5000 rpm	Approx. 4.18 N·m	Approx. 11.1 N·m	Approx. 1.8 kW	No Brake	Keyless
MPL-B330P-HK74AA	100 mm	76.2 mm	5000 rpm	Approx. 4.18 N·m	Approx. 11.1 N·m	Approx. 1.8 kW	24 V DC Brake	Keyless
MPL-B420P-HJ74AA	100 mm class	—	5000 rpm	Approx. 4.74 N·m	Approx. 13.5 N·m	Approx. 1.9 kW	24 V DC Brake	Keyed

The MPL-B330P-HJ72AA is a close comparison because it uses the same general B330P performance class but uses a keyed shaft and does not include the integrated holding brake.

The MPL-B330P-HJ74AA retains the keyed shaft and adds the 24 V DC brake.

The MPL-B330P-HK72AA is the non-brake counterpart to the HK74AA configuration and uses the same general keyless shaft concept.

The MPL-B420P-HJ74AA moves into a somewhat higher torque class while retaining the general high-speed servo concept.

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24. Five Related MPL Series Models

The following models provide a useful comparison across different performance levels in the MPL low-inertia servo motor family.

Model	Frame Class	Rated Speed	Continuous Torque	Peak Torque	Rated Power	Rotor Inertia	Approx. Weight
MPL-B310P	63 mm class	5000 rpm	1.58 N·m	3.61 N·m	0.77 kW	0.000044 kg·m²	2.7 kg
MPL-B320P	80 mm class	5000 rpm	3.05 N·m	7.91 N·m	1.5 kW	0.000078 kg·m²	3.7 kg
MPL-B330P	100 mm class	5000 rpm	4.18 N·m	11.1 N·m	1.8 kW	0.00012 kg·m²	4.6 kg
MPL-B420P	100 mm class	5000 rpm	4.74 N·m	13.5 N·m	1.9 kW	0.00026 kg·m²	4.3 kg
MPL-B430P	115 mm class	5000 rpm	6.55 N·m	19.8 N·m	2.2 kW	0.00038 kg·m²	5.5 kg

The MPL-B310P is suitable for applications with lower torque requirements.

The MPL-B320P provides a higher torque level while retaining the high-speed characteristics of the family.

The MPL-B330P provides the performance class represented by the HK74AA model.

The MPL-B420P offers higher continuous and peak torque capability.

The MPL-B430P provides a further increase in torque and power for applications with more demanding loads.

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25. Five Same-Brand Popular Models for Comparison

The following models are useful when comparing other servo motors from the same brand and the same general industrial motion-control product range.

Model	Product Type	Frame Class	Rated Speed	Continuous Torque	Peak Torque	Rated Power	Feedback	Approx. Weight
MPL-B310P	Low-Inertia Servo Motor	63 mm class	5000 rpm	1.58 N·m	3.61 N·m	0.77 kW	Incremental Encoder	2.7 kg
MPL-B320P	Low-Inertia Servo Motor	80 mm class	5000 rpm	3.05 N·m	7.91 N·m	1.5 kW	Incremental Encoder	3.7 kg
MPL-B330P-HK74AA	Low-Inertia Servo Motor	100 mm	5000 rpm	4.18 N·m	11.1 N·m	1.8 kW	2000-Line Encoder	6.04 kg
MPL-B420P	Low-Inertia Servo Motor	100 mm class	5000 rpm	4.74 N·m	13.5 N·m	1.9 kW	Encoder	4.3 kg
MPL-B430P	Low-Inertia Servo Motor	115 mm class	5000 rpm	6.55 N·m	19.8 N·m	2.2 kW	Encoder	5.5 kg

These models cover several common motor capacities and provide a practical reference when comparing torque, speed, power, and physical size.

The B310P and B320P are smaller options.

The B330P provides a balanced medium-power solution.

The B420P and B430P provide additional torque capability for more demanding applications.

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26. B330P Variant Comparison

The following comparison shows the main differences between closely related B330P configurations.

Model	Frame	Stack	Rated Speed	Continuous Torque	Peak Torque	Power	Brake	Shaft
MPL-B330P-HJ72AA	100 mm	76.2 mm	5000 rpm	4.18 N·m	11.1 N·m	1.8 kW	None	Keyed
MPL-B330P-HJ74AA	100 mm	76.2 mm	5000 rpm	4.18 N·m	11.1 N·m	1.8 kW	24 V DC	Keyed
MPL-B330P-HK72AA	100 mm	76.2 mm	5000 rpm	4.18 N·m	11.1 N·m	1.8 kW	None	Keyless
MPL-B330P-HK74AA	100 mm	76.2 mm	5000 rpm	4.18 N·m	11.1 N·m	1.8 kW	24 V DC	Keyless

The MPL-B330P-HK74AA combines two important configuration characteristics: the keyless shaft and the 24 V DC holding brake.

The HJ versions use a keyed shaft, while the HK versions use a keyless shaft.

The 72 configurations do not include the integrated holding brake, while the 74 configurations include the 24 V DC brake.

This makes the model suffix important when selecting a replacement.

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27. Mechanical Replacement Considerations

When replacing an existing servo motor with the MPL-B330P-HK74AA, the following items should be checked carefully.

Item	Check
Frame Size	100 mm
Stack Length	76.2 mm
Shaft Type	Keyless
Shaft Diameter	Verify against machine coupling
Shaft Extension	Verify mechanical drawing
Mounting Flange	Verify dimensions
Mounting Holes	Verify hole pattern
Motor Length	Verify complete motor envelope
Brake	24 V DC
Encoder	2000-Line Incremental
Connector	Right-Angle SpeedTEC DIN
Connector Clearance	Verify available space
Motor Weight	Approx. 6.04 kg
Rated Speed	5000 rpm
Continuous Torque	Approx. 4.18 N·m
Peak Torque	Approx. 11.1 N·m
Power	Approx. 1.8 kW
Servo Drive	Verify compatibility
Load Inertia	Verify servo tuning requirements

A motor should not be selected as a direct replacement solely because its rated power is the same.

Mechanical shaft configuration is particularly important for the HK74AA because it uses a keyless shaft.

The coupling, mounting flange, encoder connection, brake connection, and motor dimensions all need to be compatible with the machine.

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28. Typical Application Matching

Application	Suitability	Main Reason
Packaging Machine	Suitable	High speed and repeatable positioning
Assembly Machine	Suitable	Closed-loop motion control
Rotary Indexing	Suitable	High-speed acceleration and positioning
Material Handling	Suitable	Servo positioning and brake option
Inspection Equipment	Suitable	Accurate repeatable movement
Machine Tools	Suitable	High-speed controlled axis movement
Printing Equipment	Suitable	High-speed rotary motion
Converting Machinery	Suitable	Speed and position control
Ball-Screw Axis	Suitable	High-speed linear positioning
Belt-Driven Axis	Suitable	High-speed rotary drive
Vertical Axis	Suitable with proper safety design	Integrated holding brake
Horizontal Axis	Very suitable	Brake may be used according to machine requirements
Gravity-Loaded Axis	Suitable with additional safety provisions	Brake and mechanical safety must be correctly designed

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29. Product Advantages at a Glance

Feature	Benefit
5000 rpm Rated Speed	Supports high-speed machine cycles
Low Rotor Inertia	Rapid acceleration and deceleration
4.18 N·m Continuous Torque	Suitable for medium-duty motion
11.1 N·m Peak Torque	Strong short-duration acceleration capability
1.8 kW Power	Useful medium-power servo class
100 mm Frame	Compact industrial installation
76.2 mm Stack	B330P high-speed motor configuration
2000-Line Encoder	Closed-loop motion feedback
24 V DC Brake	Shaft holding capability
Keyless Shaft	Suitable for clamping-type couplings
Right-Angle Connector	Convenient cable routing
Rotatable Connector	Flexible installation
Low-Inertia Construction	Good dynamic response

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30. Overall Product Description

The MPL-B330P-HK74AA is a high-speed, low-inertia servo motor in the MPL product family, designed for industrial automation equipment that requires accurate positioning and fast dynamic response.

The motor uses a 100 mm frame, 76.2 mm magnetic stack, 5000 rpm rated speed, approximately 4.18 N·m continuous torque, approximately 11.1 N·m peak torque, and approximately 1.8 kW rated output power.

Its 2000-line incremental encoder provides feedback for closed-loop servo control.

The 24 V DC holding brake provides additional mechanical holding capability, making the motor useful for applications where an axis needs to remain stationary when active servo torque is removed.

The keyless shaft distinguishes the HK74AA from keyed-shaft B330P configurations. This makes the correct coupling selection particularly important during machine installation or replacement.

The right-angle SpeedTEC DIN connector provides flexible cable routing, while the approximately 180° rotatable connector arrangement can be useful in compact machine designs.

With its combination of high speed, low inertia, moderate power, high peak torque, encoder feedback, integrated brake, compact 100 mm frame, and keyless shaft configuration, the MPL-B330P-HK74AA is well suited to packaging machines, assembly equipment, indexing systems, inspection machines, material-handling equipment, machine-tool axes, printing and converting machinery, and general industrial automation.

For replacement projects, the complete motor configuration should be checked rather than relying only on the model’s power rating. The shaft configuration, flange dimensions, mounting pattern, encoder, brake, connector, motor length, operating speed, load inertia, and servo-drive compatibility should all be considered before installation.