Product Introduction

The MPL-B330P-MJ72AA provides a combination of compact construction, high-speed operation, and absolute multi-turn feedback for industrial automation systems. Its 100 mm frame and 76.2 mm stack length provide a practical mechanical package while maintaining the performance expected from an MP-Series low-inertia servo motor.

The absolute multi-turn feedback system is one of the key characteristics distinguishing this model from related MPL motors. The motor can provide position information across multiple revolutions, making it suitable for applications where precise axis positioning is an important part of the machine-control strategy.

Its keyed shaft and brake-free configuration also make the exact model designation important when selecting a replacement. A motor with the same frame size may still have a different shaft, feedback, or brake configuration.

Technical Specifications

Specification	MPL-B330P-MJ72AA
Manufacturer	Allen Bradley / Rockwell Automation
Product Series	MP-Series MPL
Product Type	Low-Inertia Brushless Servo Motor
Motor Type	Permanent-Magnet Rotary Servo Motor
Voltage Class	400 V AC
Armature Voltage	460 V AC
Frame Size	100 mm
Magnet Stack Length	76.2 mm (3.0 in.)
Rated Speed	5000 RPM
Maximum Speed	5000 RPM
Rated Power	1.8 kW
Continuous Torque	4.18 Nm
Peak Torque	11.1 Nm
Feedback	Multi-Turn High-Resolution Absolute Encoder
Feedback Resolution	Sin/Cos, 1024 cycles/rev
Feedback Protocol	Hiperface
Shaft	Keyed Shaft Extension
Shaft Seal	No Shaft Seal
Brake	No Brake
Connector	SpeedTEC DIN, Right Angle
Connector Rotation	180° Rotatable
Mounting	IEC Metric Flange
Mounting Holes	Type FF, Free Mounting Holes
Rotor Inertia	0.00012 kg·m²
Weight	4.60 kg / 10.14 lb
Overall Dimensions	Approx. 260.1 × 430.0 × 220.0 mm

Recommended Related Models

Model	Product Type	Main Configuration
MPL-B330P-MJ22AA	Servo Motor	Multi-turn high-resolution encoder, keyed shaft, no brake
MPL-B330P-MJ74AA	Servo Motor	Multi-turn high-resolution encoder, keyed shaft, 24 V DC brake
MPL-B330P-MK72AA	Servo Motor	Multi-turn high-resolution encoder, keyless shaft, no brake
MPL-B330P-MK74AA	Servo Motor	Multi-turn high-resolution encoder, keyless shaft, 24 V DC brake
MPL-B330P-SJ72AA	Servo Motor	Single-turn high-resolution encoder, keyed shaft, no brake

Popular Related Models

For replacement and retrofit projects involving MP-Series servo systems, the following models are useful comparison options:

MPL-B330P-MJ22AA — multi-turn high-resolution feedback with keyed shaft and no brake
MPL-B330P-MJ74AA — multi-turn high-resolution feedback with keyed shaft and 24 V DC brake
MPL-B330P-MK72AA — multi-turn high-resolution feedback with keyless shaft and no brake
MPL-B330P-MK74AA — multi-turn high-resolution feedback with keyless shaft and 24 V DC brake
MPL-B330P-SJ72AA — single-turn high-resolution feedback with keyed shaft and no brake
MPL-B320P-MJ72AA — related 100 mm-frame MP-Series motor with a shorter magnet stack

When selecting a replacement for the MPL-B330P-MJ72AA, pay particular attention to the multi-turn absolute encoder, keyed shaft, 5000 RPM rating, 460 V AC class, 76.2 mm magnet stack, and no-brake configuration. These details are essential for maintaining both the mechanical and control-system compatibility of an existing servo axis.

Applications Across Automated Machinery

The MPL-B330P-MJ72AA can be integrated into a variety of industrial motion-control systems, including:

Packaging and filling machinery
Automated assembly equipment
Machine tools
Material handling systems
Printing and converting equipment
Pick-and-place machines
High-speed indexing systems
Electronic manufacturing equipment
Conveyor positioning systems
Robotic and automated production equipment

Its multi-turn absolute feedback makes it particularly useful for applications where the controller needs detailed position information over multiple motor revolutions.

Main Benefits of the MPL-B330P-MJ72AA

Low-inertia construction
The MP-Series low-inertia design enables rapid response to acceleration and deceleration commands, helping improve machine cycle performance.

Multi-turn absolute feedback
The high-resolution absolute encoder provides detailed position information and supports accurate closed-loop motion control without relying solely on incremental position tracking.

5000 RPM operation
The motor's 5000 RPM rating supports high-speed machine cycles and fast positioning applications.

4.18 Nm continuous torque
The motor provides 4.18 Nm of continuous output torque, with a peak torque capability of 11.1 Nm for suitable dynamic motion requirements.

Keyed shaft design
The keyed shaft extension provides a positive mechanical interface for compatible couplings, pulleys, and other transmission components.

Flexible connector orientation
The SpeedTEC DIN right-angle connector can be rotated up to 180 degrees, helping engineers manage cable routing in compact machine installations.

Brake-free configuration
The MPL-B330P-MJ72AA does not include a factory-installed holding brake, making it appropriate for applications where a mechanical brake is not required.

Technical FAQs

1. What type of motor is the MPL-B330P-MJ72AA?
It is an Allen Bradley MP-Series low-inertia brushless rotary servo motor designed for closed-loop industrial motion control.

2. What voltage is the MPL-B330P-MJ72AA designed for?
The motor has a 460 V AC armature-voltage rating and belongs to the 400 V AC voltage class.

3. What is the rated speed of this servo motor?
The MPL-B330P-MJ72AA has a rated speed of 5000 RPM and a maximum speed of 5000 RPM.

4. What feedback technology does the motor use?
It uses a multi-turn high-resolution absolute encoder. The encoder uses Sin/Cos feedback with a Hiperface protocol, providing detailed position information for servo control.

5. Does the MPL-B330P-MJ72AA include a holding brake?
No. This model has no factory-installed brake. If the machine requires shaft holding during power-off conditions, a brake-equipped motor should be considered.

6. What type of shaft does this motor have?
The MPL-B330P-MJ72AA has a keyed shaft extension. This should be considered when selecting the motor coupling and driven mechanical components.

7. What is the magnet stack length?
The motor uses a 30-series magnet stack with a length of 76.2 mm, equivalent to 3.0 inches.

8. Which Allen Bradley drive families can be used with this motor?
The motor is designed for compatible MP-Series motion systems and can be used with supported drive families including Kinetix 5500, Kinetix 6200/6500, Kinetix 6000, Kinetix 300, Kinetix 350, Kinetix 2000, Kinetix 7000, and Ultra 3000 when the complete motor and drive configuration is properly matched.

9. What is the continuous torque rating?
The MPL-B330P-MJ72AA has a continuous output torque rating of 4.18 Nm and a peak torque rating of 11.1 Nm.

10. What should be checked before replacing another MP-Series servo motor with this model?
The voltage class, frame size, stack length, feedback technology, shaft type, connector configuration, brake option, rated speed, and servo-drive compatibility should all be compared. Similar-looking MP-Series motors may have different electrical or feedback configurations.

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