MPL-B330P-RJ72AA Low-Inertia Servo Motor

Product Introduction, Technical Parameters, Applications, Advantages and Related Model Recommendations

1. Product Overview

The MPL-B330P-RJ72AA is a high-performance low-inertia brushless AC rotary servo motor designed for precision industrial motion control applications.

It belongs to the MP-Series MPL low-inertia servo motor family and is developed for automation systems that require fast response, accurate positioning, stable speed regulation, and high repeatability.

This motor features a 100 mm frame size, 76.2 mm magnet stack length, 5000 rpm rated speed, and a continuous torque output of approximately 4.18 Nm. The motor provides a continuous power rating of approximately 1.8 kW, making it suitable for medium-duty servo applications requiring both speed and torque performance.

The MPL-B330P-RJ72AA uses a resolver feedback system instead of an encoder-based feedback system. The resolver provides reliable position feedback with strong environmental resistance, making it suitable for industrial environments where durability and stable operation are important.

This model includes a keyed shaft extension, allowing secure mechanical coupling with compatible gearboxes, pulleys, couplings, and driven mechanisms.

The motor does not include an integrated brake, making it suitable for applications where external holding mechanisms are not required.

The motor uses a right-angle SpeedTEC DIN connector with 180° rotatable quick-connect capability, providing flexibility for machine installation and cable routing.

2. Brand and Product Classification

3. Product Model Explanation

The model number MPL-B330P-RJ72AA contains important configuration information.

This configuration creates a motor optimized for applications requiring:

• High-speed operation
• Reliable resolver feedback
• Mechanical shaft locking through a key connection
• Compact installation
• Industrial durability

4. Detailed Technical Specifications

5. Mechanical Dimensions

The MPL-B330P-RJ72AA uses a 100 mm frame design with a 76.2 mm magnetic stack length.

The actual installed dimensions depend on the shaft extension, connector orientation, flange position, and mounting arrangement.

For machine integration, the motor envelope must be considered together with coupling size, cable routing space, and mechanical clearance.

6. Weight Information

The relatively compact weight allows installation in machines where space and moving mass must be controlled.

7. Performance Characteristics

High-Speed Capability

The motor operates at a rated speed of 5000 rpm.

This high-speed capability allows:

• Faster machine cycles
• Reduced positioning time
• Efficient transmission design
• Improved production throughput

Torque Performance

The continuous torque rating supports normal operating loads, while the peak torque capability supports acceleration, deceleration, and short-duration high-load conditions.

Low-Inertia Performance

The motor uses a low-inertia rotor design.

Low inertia provides:

• Faster acceleration response
• Faster stopping response
• Improved servo tuning capability
• Better performance in repetitive motion applications

8. Resolver Feedback System

Unlike encoder-based versions, the MPL-B330P-RJ72AA uses a resolver feedback system.

Resolvers are known for:

• High mechanical durability
• Resistance to vibration
• Resistance to contamination
• Stable operation in industrial environments

Resolvers are commonly selected in applications where long-term reliability and rugged operation are important.

9. Shaft Configuration

The motor uses a keyed shaft extension.

The keyed shaft provides a positive mechanical connection between the motor and driven equipment.

10. Brake Configuration

The MPL-B330P-RJ72AA does not include an integrated holding brake.

For vertical-axis applications, an external holding mechanism may be required depending on the machine safety design.

11. Connector Specification

The connector design helps reduce installation limitations in compact machine layouts.

12. Product Applications

Packaging Machinery

The motor is suitable for packaging equipment requiring accurate and repetitive motion.

Typical applications:

• Indexing stations
• Filling systems
• Sealing equipment
• Cutting mechanisms
• Labeling machines
• Material positioning systems

The low-inertia design helps achieve fast cycle times.

Material Handling Equipment

The motor can be applied in automated handling systems.

Applications include:

• Conveyor positioning
• Transfer mechanisms
• Pick-and-place equipment
• Rotary tables
• Automated feeding systems

The resolver feedback provides stable operation in industrial environments.

Assembly Automation

The motor is suitable for precision assembly systems.

Typical applications:

• Electronic assembly machines
• Component insertion equipment
• Inspection systems
• Automated production lines

The closed-loop servo control provides accurate movement control.

Machine Tools

The motor can support auxiliary motion functions.

Applications include:

• Rotary indexing axes
• Tool positioning systems
• Feed mechanisms
• Automated adjustment systems

Printing and Converting Equipment

Applications include:

• Web control systems
• Roller synchronization
• Feeding systems
• Cutting equipment

The high-speed operation supports continuous production environments.

13. Product Advantages

1. Excellent Dynamic Response

The low-inertia rotor allows fast changes in speed and position.

Benefits:

• Short acceleration time
• Improved machine responsiveness
• Better high-cycle performance

2. High Torque Density

The motor provides strong torque output while maintaining compact dimensions.

Advantages:

• Smaller machine installation space
• Efficient power utilization
• Reduced mechanical size requirements

3. Reliable Resolver Feedback

Resolver feedback provides excellent durability.

Advantages:

• High vibration resistance
• Long service life
• Stable industrial operation

4. Compact 100 mm Frame

The 100 mm frame provides a balance between performance and size.

Advantages:

• Easy machine integration
• Reduced installation space
• Suitable for modular automation equipment

5. Keyed Shaft Connection

The keyed shaft improves mechanical connection reliability.

Benefits:

• Secure torque transmission
• Reduced coupling slip risk
• Suitable for industrial drive systems

6. Flexible Connector Design

The 180° rotatable connector improves installation flexibility.

Benefits:

• Easier cable routing
• Cleaner machine design
• Reduced installation interference

14. Compatible Application Characteristics

15. Recommended Same Series or Related Models

16. Five Related Popular Models

17. Five Same Brand Popular Motion Products

18. Final Summary

The MPL-B330P-RJ72AA is a compact yet powerful low-inertia servo motor designed for demanding industrial automation systems.

Its main technical advantages include:

• 5000 rpm rated speed
• 4.18 Nm continuous torque
• 11.1 Nm peak torque
• 1.8 kW continuous power
• 100 mm frame size
• 76.2 mm magnet stack length
• Resolver feedback system
• Keyed shaft extension
• No integrated brake
• Right-angle rotatable SpeedTEC DIN connector
• Approximately 4.79 kg weight

The motor is especially suitable for applications requiring fast response, reliable feedback, accurate positioning, and compact installation.

Typical applications include packaging machinery, automated assembly equipment, material handling systems, printing equipment, and industrial motion platforms.

With its low-inertia construction, resolver feedback, and high-speed capability, the MPL-B330P-RJ72AA provides a balanced solution for medium-power servo motion applications where reliability and precise control are important.