Description
The Allen-Bradley MPL-B430P-HJ72AA is an MP-Series Low-Inertia AC Rotary Servo Motor designed for precision motion-control applications. It uses a brushless motor design with a 400/460 V AC voltage class, 5000 RPM rated speed, and incremental encoder feedback.
This motor is part of the Allen-Bradley Kinetix MP-Series motion-control family and is suitable for applications such as packaging, material handling, converting, machine automation, and other systems requiring controlled rotary motion. It is designed to work with several Allen-Bradley servo-drive families, including Kinetix 5500, 6200/6500, 6000, 300, 350, 2000, and 7000.
The MPL-B430P-HJ72AA has a 115 mm frame size, 76.2 mm magnetic stack, keyed shaft, SpeedTec DIN connector, and 2000 pulses/revolution incremental encoder. Rockwell Automation lists this exact catalog number as discontinued, with MPL-B430P-SJ72AA identified as an engineering replacement.

📋 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | Allen-Bradley |
| Model | MPL-B430P-HJ72AA |
| Series | MP-Series Low-Inertia / Kinetix |
| Product Name | AC Rotary Servo Motor |
| Product Type | Brushless Low-Inertia Servo Motor |
| Voltage Class | 400/460 V AC |
| Rated Speed | 5000 RPM |
| Continuous Rated Torque | 6.55 Nm |
| Encoder | 2000 pulses/revolution Incremental Encoder |
| Rated Power | 2.2 kW |
🔧 Product Features
🔹 Low-Inertia Motion Control
Designed for applications requiring fast acceleration, controlled speed, and accurate positioning.
🔹 5000 RPM Operation
The motor has a rated speed of 5000 RPM, supporting high-speed rotary motion applications.
🔹 High-Resolution Feedback
The integrated incremental encoder provides 2000 pulses per revolution for motion feedback.
🔹 115 mm Frame
The motor uses a 115 mm frame size with a 76.2 mm (3.0 in.) magnetic stack.
🔹 Keyed Shaft
The shaft is supplied with a key arrangement for compatible mechanical coupling.
🔹 SpeedTec DIN Connection
The motor uses a SpeedTec DIN connector with a right-angle configuration.
🛠️ Installation & Maintenance
🔸 Confirm the complete catalog number MPL-B430P-HJ72AA before installation.
🔸 Verify the servo drive, voltage class, feedback configuration, and motor parameters.
🔸 Check the motor shaft, mounting flange, connector, and cable condition before commissioning.
🔸 Ensure the motor is correctly aligned with the driven machine to prevent excessive mechanical loading.
🔸 Verify encoder feedback and motor rotation direction at low speed before normal operation.
🔸 Do not connect or disconnect motor or feedback cables while the drive is energized.
🔸 Because this catalog number has been discontinued by Rockwell Automation, verify engineering-replacement compatibility before designing a new system around it.
❓ Frequently Asked Questions
Q: What is the MPL-B430P-HJ72AA?
A: It is an Allen-Bradley MP-Series low-inertia AC rotary servo motor used for industrial motion-control applications.
Q: What is the rated speed?
A: The rated speed is 5000 RPM.
Q: What is the rated torque?
A: The specified continuous output torque is 6.55 Nm, with a peak torque of 19.8 Nm.
Q: What encoder does this motor use?
A: It uses a 2000 pulses/revolution incremental encoder.
Q: What is the rated power?
A: The continuous rated power is 2.2 kW.
Q: Does the motor have a brake?
A: The technical data for this specific catalog number indicates no brake. Always verify the nameplate and exact motor configuration before installation.
Q: Which Allen-Bradley drives can be used with this motor?
A: Compatible drive families include Kinetix 5500, Kinetix 6200/6500, Kinetix 6000, Kinetix 300/350, Kinetix 2000, and Kinetix 7000, subject to the complete system configuration.
Q: Is MPL-B430P-HJ72AA still manufactured?
A: Rockwell Automation lists the exact catalog number as discontinued as of July 23, 2024 and identifies MPL-B430P-SJ72AA as an engineering replacement.
Q: What should I check before purchasing a replacement?
A: Match the catalog number, voltage class, frame size, encoder type, shaft configuration, connector arrangement, and brake configuration with the existing motor.
📦 Recommended Allen-Bradley Models
- MPL-B430P-SJ72AA – MP-Series Low-Inertia Servo Motor
- MPL-B4530K-MJ72AA – MP-Series Servo Motor
- MPL-B540K-MJ72AA – MP-Series Low-Inertia Servo Motor
- MPL-B560F-MJ72AA – MP-Series Servo Motor
- MPL-B580F-SJ72AA – MP-Series Servo Motor
- MPL-B220P-SJ72AA – MP-Series Low-Inertia Servo Motor
- MPL-B230P-SJ72AA – MP-Series Low-Inertia Servo Motor
- MPL-B310P-MJ72AA – MP-Series Servo Motor
- MPL-B420P-MJ72AA – MP-Series Low-Inertia Servo Motor
- MPL-B520K-MJ72AA – MP-Series Servo Motor
