Product Introduction

The MPL-B330P-MK72AA is designed for machine builders and maintenance teams that need a high-performance servo motor for MP-Series motion systems. Its low-inertia construction helps deliver fast dynamic response, while the 5000 RPM rating supports demanding production cycles.

The motor's multi-turn high-resolution absolute encoder is one of its defining characteristics. Compared with simpler feedback configurations, the absolute multi-turn design provides detailed position information across multiple revolutions, making it suitable for sophisticated positioning and synchronization applications.

The MK72AA designation also identifies a specific mechanical configuration: the motor uses a keyless shaft extension and has no brake. These details should be carefully considered when replacing an existing MPL motor because closely related models may use keyed shafts or different brake configurations.

Technical Specifications

Specification	MPL-B330P-MK72AA
Manufacturer	Allen Bradley / Rockwell Automation
Product Series	MP-Series MPL
Product Type	Low-Inertia Brushless Servo Motor
Motor Type	Permanent-Magnet Rotary Servo Motor
Armature Voltage	460 V AC
Voltage Class	400 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	Keyless 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
Dimensions	Refer to the applicable mechanical drawing for final mounting and installation dimensions

Recommended Related Models

Model	Product Type	Main Configuration
MPL-B330P-MK74AA	Servo Motor	Multi-turn absolute feedback, keyless shaft, 24 V DC brake
MPL-B330P-MJ72AA	Servo Motor	Multi-turn absolute feedback, keyed shaft, no brake
MPL-B330P-MJ74AA	Servo Motor	Multi-turn absolute feedback, keyed shaft, 24 V DC brake
MPL-B330P-MK22AA	Servo Motor	Multi-turn absolute feedback, keyless shaft, no brake
MPL-B330P-SK72AA	Servo Motor	Single-turn high-resolution feedback, keyless shaft, no brake

Popular Related Models

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

MPL-B330P-MK74AA — multi-turn absolute feedback, keyless shaft, 24 V DC brake
MPL-B330P-MJ72AA — multi-turn absolute feedback, keyed shaft, no brake
MPL-B330P-MJ74AA — multi-turn absolute feedback, keyed shaft, 24 V DC brake
MPL-B330P-MK22AA — multi-turn absolute feedback, keyless shaft, no brake
MPL-B330P-SK72AA — single-turn high-resolution feedback, keyless shaft, no brake
MPL-B320P-MK72AA — related 100 mm-frame configuration with a shorter 50.8 mm magnet stack

When selecting a replacement for the MPL-B330P-MK72AA, the most important characteristics to match are the 460 V AC rating, 100 mm frame, 76.2 mm magnet stack, 5000 RPM speed, multi-turn absolute feedback, keyless shaft, and no-brake configuration.

Applications for Industrial Motion Systems

The MPL-B330P-MK72AA can be applied across a broad range of automated equipment, including:

Packaging and filling machinery
Automated assembly systems
Material handling equipment
Machine tools
Printing and converting machinery
Pick-and-place systems
High-speed indexing machines
Conveyor positioning systems
Electronics manufacturing equipment
Automated production lines
Precision motion-control systems

The multi-turn absolute feedback configuration is particularly useful when the motion controller needs accurate position information across multiple motor revolutions.

Why Choose the MPL-B330P-MK72AA?

Low-inertia design
The MP-Series low-inertia construction allows the motor to respond quickly to changes in speed and position commands, supporting dynamic machine cycles.

Multi-turn absolute feedback
The integrated high-resolution absolute encoder provides detailed position information over multiple revolutions. This is valuable for applications requiring repeatable positioning and reliable closed-loop control.

5000 RPM operation
The 5000 RPM rating supports high-speed positioning and short machine cycles in automated production equipment.

4.18 Nm continuous torque
The motor provides 4.18 Nm of continuous torque and up to 11.1 Nm peak torque for demanding acceleration and dynamic-load conditions.

Keyless shaft extension
Unlike keyed-shaft versions in the MPL-B330P family, the MK72AA uses a keyless shaft. This makes coupling selection an important part of mechanical integration.

Flexible SpeedTEC DIN connector
The right-angle connector can be rotated through 180 degrees, allowing greater flexibility for motor-cable routing and machine layout.

No factory brake
The motor does not include a holding brake, making it suitable for applications where an integrated brake is not required.

Technical FAQs

1. What type of servo motor is the MPL-B330P-MK72AA?
It is an Allen Bradley MP-Series low-inertia brushless rotary servo motor designed for closed-loop industrial motion control.

2. What is the voltage rating of the MPL-B330P-MK72AA?
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-MK72AA is rated for 5000 RPM, making it suitable for high-speed motion applications.

4. What type of feedback does the motor use?
It uses a multi-turn high-resolution absolute encoder with Sin/Cos feedback and Hiperface protocol. The encoder provides position feedback over multiple revolutions.

5. Does the MPL-B330P-MK72AA have a holding brake?
No. The MK72AA configuration has no factory-installed brake. If the application requires mechanical holding, a brake-equipped model should be selected or an appropriate external braking solution should be considered.

6. Is the shaft keyed or keyless?
The MPL-B330P-MK72AA has a keyless shaft extension. The coupling and driven mechanical components should therefore be selected specifically for a keyless shaft arrangement.

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. What feedback resolution does the encoder provide?
The multi-turn absolute encoder uses Sin/Cos feedback with 1024 cycles per revolution and Hiperface protocol.

9. Which Allen Bradley drive families can be used with this motor?
Compatible MP-Series motion platforms include Kinetix 5500, Kinetix 6200/6500, Kinetix 6000, Kinetix 300, Kinetix 350, Kinetix 2000, Kinetix 7000, and Ultra 3000, provided the complete motor, feedback, voltage, and drive configuration is correctly matched.

10. What should be checked before replacing an existing servo motor with the MK72AA?
The voltage class, frame size, magnet stack length, feedback technology, shaft configuration, connector type, brake option, speed rating, and drive compatibility should all be checked. In particular, the MK72AA uses a keyless shaft and multi-turn absolute feedback, so a motor with a similar frame size is not automatically a suitable replacement.

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