Brand:Allen Bradley PLC Item No.:MPL-A420P-HK72AA Product Origin:USA Product Dimensions:Frame Size: 115 mm Product Weight:4.3 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The Allen Bradley MPL-A420P-HK72AA Servo Motor is a low-inertia brushless AC servo motor intended for industrial motion-control applications where speed, positioning accuracy, and rapid response are important.
The motor's 115 mm frame size provides a practical platform for machinery requiring a capable servo motor while maintaining a controlled mechanical footprint. It is suitable for applications where the motor may need to accelerate and decelerate repeatedly during normal production.
Low-inertia servo motors are particularly valuable in high-cycle machinery. Packaging equipment, automated assembly systems, indexing mechanisms, and material-handling machines can require rapid changes in motor speed and position. A responsive motor can help the motion system reach commanded operating points efficiently and maintain predictable cycle behavior.
Feedback is another important consideration. A servo motor relies on feedback information to allow the controller to determine the motor's position and speed. The MPL-A420P-HK72AA should therefore be paired with a compatible drive and controller that support its specified feedback architecture.
The keyed shaft provides a conventional mechanical connection for compatible machine components. This is an important detail during replacement because another MPL motor with the same frame size but a different shaft configuration may not fit the existing coupling or mechanical transmission.
The HK72AA configuration is also supplied without an integral brake. For vertical axes or applications where the load must remain stationary after servo power is removed, the overall machine design should provide a suitable independent holding solution.
For maintenance teams, accurate catalog-number matching is essential. MP-Series motors can have similar frame sizes while differing in feedback, shaft, brake, connector, and stack-length configurations.
The MPL-A420P-HK72AA is therefore a practical servo-motor solution for industrial equipment requiring responsive closed-loop motion, compact installation, and dependable integration with the appropriate Allen Bradley motion-control system.
Technical Specifications
Specification
Details
Brand
Allen Bradley
Manufacturer
Rockwell Automation
Product Family
MP-Series MPL
Model
MPL-A420P-HK72AA
Product Type
AC Servo Motor
Motor Type
Low-Inertia Brushless Servo Motor
Voltage Class
230 V AC
Frame Size
115 mm
Frame
4
Magnet Stack
Configuration Specific
Feedback
High-Resolution Servo Feedback
Shaft Type
Keyed Shaft Extension
Brake
No Brake
Connector
Right-Angle Industrial Servo Connector
Mounting
Metric Mounting
Weight
4.30 kg (9.48 lb)
Overall Dimensions
Not supplied
Application
Industrial Motion Control
Weight: 4.30 kg (9.48 lb)
The supplied product information identifies a 115 mm frame size and 4.30 kg weight. Complete overall motor dimensions and detailed electrical ratings were not provided, so unsupported dimensional or electrical values have not been added.
Recommended Related Models
For Allen Bradley MP-Series MPL servo applications, the following models are useful related references:
Allen Bradley MPL-A420P-HJ72AA – Servo Motor
Allen Bradley MPL-A420P-HJ74AA – Servo Motor
Allen Bradley MPL-A420P-HK74AA – Servo Motor
Allen Bradley MPL-A420P-MJ72AA – Servo Motor
Allen Bradley MPL-A420P-SJ72AA – Servo Motor
These models belong to closely related MPL-A420P configurations, but feedback, shaft, brake, connector, and electrical characteristics may differ. Compatibility should be verified before selecting any model as a replacement.
Popular Related Models
For customers maintaining Allen Bradley motion-control equipment, these MP-Series servo motors are also useful related products:
Allen Bradley MPL-A420P-HJ72AA – Servo Motor
Allen Bradley MPL-A420P-HJ74AA – Servo Motor
Allen Bradley MPL-A420P-HK74AA – Servo Motor
Allen Bradley MPL-A420P-MJ72AA – Servo Motor
Allen Bradley MPL-A330P-SK72AA – Servo Motor
When sourcing the Allen Bradley MPL-A420P-HK72AA Servo Motor, always provide the complete catalog number. The HK72AA configuration is important because the motor's 115 mm frame, keyed shaft, feedback arrangement, connector configuration, and no-brake design must match the existing servo drive and mechanical system for reliable installation and commissioning.
Applications
The Allen Bradley MPL-A420P-HK72AA Servo Motor is a low-inertia brushless AC servo motor designed for industrial motion-control applications where responsive acceleration, accurate positioning, and repeatable machine movement are essential.
With a 115 mm frame size, compact industrial construction, and a servo-oriented feedback configuration, this motor is suitable for automated machinery that performs frequent positioning and speed changes. Its low-inertia characteristics make it particularly attractive for applications where rapid motion response can contribute to shorter machine cycles and better production consistency.
Typical applications include:
Automated assembly machinery
Packaging and labeling equipment
Pick-and-place systems
Material handling equipment
Precision indexing machines
Printing and converting equipment
Electronics manufacturing machinery
Machine tools
Automated positioning systems
High-cycle production equipment
Industrial conveyor mechanisms
Servo motor replacement projects
The MPL-A420P-HK72AA can be a practical choice for machine builders and maintenance engineers seeking to maintain an Allen Bradley motion-control architecture while replacing an existing servo motor.
Advantages
Low-inertia motion response
The motor is designed for applications requiring rapid changes in speed and position, making it suitable for high-cycle automation.
High-speed servo operation
Its servo architecture supports demanding applications where responsive rotary movement contributes to machine productivity.
High-resolution feedback
The integrated feedback system allows the servo controller to monitor motor position and speed for accurate closed-loop operation.
115 mm frame size
The frame provides a useful balance between servo performance and mechanical installation requirements.
230 V class servo platform
The motor is intended for compatible Allen Bradley 230 V-class motion-control systems.
Keyed shaft configuration
The keyed shaft provides a conventional mechanical interface for compatible couplings and driven machinery.
No integrated brake
The HK72AA configuration is supplied without a brake, making it suitable for machine designs where no shaft-holding brake is required or where an independent holding system is provided.
Practical cable integration
The right-angle connector arrangement can help simplify cable routing in compact machine layouts.
Suitable for replacement work
For installed MP-Series systems, the MPL-A420P-HK72AA offers a useful replacement option when matching motor characteristics and mechanical interfaces.
Technical FAQs
1. What is the Allen Bradley MPL-A420P-HK72AA?
The MPL-A420P-HK72AA is a low-inertia brushless AC servo motor from the Allen Bradley MP-Series MPL family.
2. What voltage class is associated with this motor?
The MPL-A420P-HK72AA is intended for the 230 V AC servo-motor class and requires a compatible motion-control drive.
3. What is the frame size of the motor?
The motor uses a 115 mm frame size.
4. Does the MPL-A420P-HK72AA include an integrated brake?
No. This configuration is a no-brake servo motor.
5. Why is low inertia useful in industrial motion systems?
Low rotor inertia allows the motor to accelerate and decelerate quickly, which can improve machine response in applications involving frequent positioning and speed changes.
6. What can cause servo motor vibration?
Possible causes include incorrect servo tuning, mechanical resonance, coupling misalignment, unstable feedback, excessive load, mounting problems, or bearing deterioration.
7. What can cause the motor to overheat?
Excessive mechanical load, high duty cycle, poor ventilation, mechanical binding, unsuitable servo tuning, and incorrect drive configuration can all contribute to overheating.
8. What should be checked if the motor does not rotate?
Check servo enable status, active drive alarms, motor power connections, feedback wiring, motion commands, drive parameters, and mechanical restrictions.
9. Can this motor be connected to any Allen Bradley servo drive?
No. The servo drive must be compatible with the motor's voltage class, feedback system, electrical characteristics, and required motor capacity.
10. What should be checked before replacing an existing MPL motor?
Verify the complete catalog number, frame size, magnet-stack configuration, feedback, shaft type, connector arrangement, brake configuration, and compatibility with the existing servo drive and motion controller.
