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- Low-Inertia Brushless Servo Motors Product
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MPL-B330P-RJ74AA Low-Inertia Servo Motor
Product Introduction, Technical Parameters, Applications, Advantages and Related Model Recommendations
1. Product Overview
The MPL-B330P-RJ74AA is a high-performance low-inertia AC rotary servo motor designed for industrial automation systems requiring high-speed operation, accurate positioning, strong dynamic response, and reliable motion control.
It belongs to the MP-Series MPL low-inertia servo motor family and is designed for medium-power motion applications. The motor combines compact mechanical dimensions with high torque density, allowing machine builders to achieve fast acceleration, precise positioning, and stable continuous operation.
The motor uses a 100 mm frame size with a 76.2 mm magnet stack length. It provides a rated speed of 5000 rpm, continuous torque of approximately 4.18 Nm, peak torque of approximately 11.1 Nm, and continuous power output of approximately 1.8 kW.
The MPL-B330P-RJ74AA configuration includes resolver feedback, keyed shaft extension, 24V DC holding brake, and a right-angle SpeedTEC DIN connector with 180° rotatable installation capability.
The resolver feedback design provides excellent durability in industrial environments where vibration resistance, stable operation, and long service life are important.
The integrated 24V DC brake allows the motor shaft to maintain position when power is removed, making it suitable for applications involving vertical loads, positioning axes, and safety holding requirements.
The keyed shaft design provides reliable mechanical torque transmission between the motor and external mechanical components such as couplings, gearboxes, and drive mechanisms.
2. Brand and Product Classification
| Item | Specification |
|---|---|
| Brand | Allen-Bradley |
| Product Family | MP-Series |
| Product Series | MPL Low-Inertia Servo Motor Series |
| Product Type | Brushless AC Rotary Servo Motor |
| Model | MPL-B330P-RJ74AA |
| Motor Category | Permanent Magnet Synchronous Servo Motor |
| Application Type | Industrial Motion Control |
| Voltage Class | 400V AC |
| Rated Voltage | 460V AC |
| Frame Size | 100 mm |
| Magnet Stack Length | 76.2 mm |
| Rated Speed | 5000 rpm |
| Feedback Type | Resolver |
| Shaft Type | Keyed Shaft Extension |
| Brake Configuration | 24V DC Holding Brake |
| Connector Type | SpeedTEC DIN Connector |
| Connector Style | Right Angle |
| Connector Rotation | 180° Rotatable |
| Mounting Standard | IEC Metric Flange |
| Mounting Hole Type | Free Mounting Holes Type FF |
3. Product Series Introduction
The MPL series is a low-inertia servo motor family designed for applications requiring fast response and precise motion control.
The series focuses on:
- High acceleration capability
- High positioning accuracy
- Compact motor structure
- Flexible feedback options
- Reliable industrial performance
The low-inertia rotor design reduces the mechanical resistance during acceleration and deceleration, allowing the motor to respond quickly to commands from the motion controller.
The MPL-B330P-RJ74AA belongs to the medium-size range of this series and provides a balance between torque output, speed capability, and installation size.
4. Model Structure Explanation
The model number MPL-B330P-RJ74AA represents the motor configuration.
| Code | Meaning |
|---|---|
| MPL | MP-Series Low-Inertia Servo Motor |
| B | 460V AC Voltage Class |
| 330 | Frame Size 3, 100 mm Frame, 76.2 mm Stack Length |
| P | 5000 rpm Speed Class |
| R | Resolver Feedback |
| J | Keyed Shaft Extension |
| 7 | SpeedTEC DIN Right-Angle Connector |
| 4 | 24V DC Brake Included |
| AA | Standard Configuration |
This configuration is designed for users who require:
- Resolver-based feedback reliability
- Mechanical holding capability
- High-speed servo performance
- Compact installation
- Accurate closed-loop control
5. Detailed Technical Parameters
| Parameter | Specification |
|---|---|
| Model | MPL-B330P-RJ74AA |
| Motor Type | Brushless AC Servo Motor |
| Series | MPL Low-Inertia Servo |
| Voltage Class | 400V AC |
| Armature Voltage | 460V AC |
| Rated Speed | 5000 rpm |
| Maximum Speed | 5000 rpm |
| Continuous Torque | 4.18 Nm |
| Peak Torque | 11.1 Nm |
| Continuous Output Power | 1.8 kW |
| Rotor Inertia | Approximately 0.00012 kg·m² |
| Frame Size | 100 mm |
| Magnet Stack Length | 76.2 mm |
| Feedback System | Resolver |
| Feedback Resolution | Resolver Position Feedback |
| Shaft Design | Keyed Shaft |
| Brake Type | 24V DC Holding Brake |
| Connector Type | SpeedTEC DIN |
| Connector Direction | Right Angle |
| Connector Rotation | 180° Adjustable |
| Mounting Type | IEC Metric Flange |
| Housing Design | Industrial Servo Housing |
| Protection Design | Industrial Environment Construction |
| Approximate Weight | 5.81 kg |
6. Mechanical Dimensions
The MPL-B330P-RJ74AA uses a compact 100 mm frame structure designed for easy machine integration.
| Dimension Parameter | Specification |
|---|---|
| Frame Size | 100 mm |
| Frame Diameter | Approx. 100 mm |
| Magnet Stack Length | 76.2 mm |
| Stack Classification | 3.0 inch |
| Mounting Flange | IEC Metric |
| Shaft Type | Keyed Shaft |
| Shaft Seal | No Shaft Seal |
| Brake Housing | Included |
| Connector Style | Right Angle DIN |
| Connector Rotation | 180° |
| Approximate Weight | 5.81 kg |
The overall installation space depends on the coupling design, cable arrangement, connector orientation, and machine structure.
7. Weight Information
| Item | Specification |
|---|---|
| Product Weight | Approx. 5.81 kg |
| Motor Frame | 100 mm |
| Weight Category | Medium Servo Motor |
| Brake Included | Yes |
| Shaft Type | Keyed Shaft |
| Installation Type | Machine Flange Mount |
The integrated brake increases the total motor weight compared with non-brake versions.
8. Electrical and Motion Performance
Speed Performance
| Parameter | Value |
|---|---|
| Rated Speed | 5000 rpm |
| Maximum Speed | 5000 rpm |
The high-speed capability allows the motor to support applications requiring fast cycle times and frequent positioning movements.
Torque Performance
| Torque Parameter | Value |
|---|---|
| Continuous Torque | 4.18 Nm |
| Peak Torque | 11.1 Nm |
The motor provides sufficient torque reserve for acceleration, rapid positioning, and short-duration high-load operation.
Power Performance
| Parameter | Value |
|---|---|
| Continuous Power Output | 1.8 kW |
| Motor Class | Medium Power Servo Motor |
The power rating provides a balance between compact size and industrial motion capability.
9. Resolver Feedback System
The motor uses resolver feedback technology.
| Feedback Parameter | Specification |
|---|---|
| Feedback Type | Resolver |
| Feedback Function | Position and Speed Detection |
| Control Method | Closed-Loop Servo Control |
| Environmental Resistance | High |
| Suitable Environment | Industrial Automation |
Resolver feedback provides:
- Strong vibration resistance
- Stable operation
- Long service life
- Reliable position monitoring
This makes the motor suitable for demanding industrial environments.
10. Brake System
The MPL-B330P-RJ74AA includes an integrated 24V DC holding brake.
| Brake Parameter | Specification |
|---|---|
| Brake Included | Yes |
| Brake Voltage | 24V DC |
| Brake Type | Holding Brake |
| Function | Shaft Position Holding |
| Application | Vertical Axis and Load Holding |
The brake helps maintain mechanical position when the motor is disabled.
Typical applications include:
- Vertical lifting systems
- Z-axis mechanisms
- Load positioning equipment
- Safety holding systems
11. Shaft Configuration
| Shaft Parameter | Specification |
|---|---|
| Shaft Type | Keyed Shaft Extension |
| Connection Method | Mechanical Key Connection |
| Torque Transfer | Positive Mechanical Locking |
| Compatible Components | Couplings, Gearboxes, Pulleys |
| Shaft Seal | None |
The keyed shaft provides reliable torque transmission and prevents mechanical slipping during operation.
12. Connector Configuration
| Connector Parameter | Specification |
|---|---|
| Connector Type | SpeedTEC DIN |
| Connector Style | Right Angle |
| Rotation Capability | 180° |
| Connection Method | Quick Connect |
| Installation Benefit | Flexible Cable Routing |
The connector design improves installation flexibility in compact machines.
13. Product Applications
Packaging Equipment
The motor is suitable for automated packaging systems.
Applications include:
- Filling machines
- Labeling equipment
- Sealing systems
- Cutting machines
- Indexing tables
- Positioning units
The fast response characteristics improve machine cycle efficiency.
Material Handling Systems
Applications include:
- Conveyor positioning
- Transfer mechanisms
- Pick-and-place systems
- Rotary tables
- Automated loading equipment
The resolver feedback provides reliable motion control during continuous operation.
Assembly Automation
Applications include:
- Precision assembly equipment
- Electronic manufacturing machines
- Inspection systems
- Component positioning systems
The servo system provides accurate and repeatable movement.
Printing and Processing Equipment
Applications include:
- Feeding mechanisms
- Roller synchronization
- Cutting systems
- Web handling equipment
The high-speed operation supports continuous production processes.
Machine Tool Auxiliary Motion
Applications include:
- Rotary indexing axes
- Feed systems
- Tool positioning
- Adjustment mechanisms
14. Product Advantages
1. Fast Dynamic Response
The low-inertia design provides rapid acceleration and deceleration.
Advantages:
- Faster positioning
- Reduced cycle time
- Improved machine productivity
2. Reliable Resolver Feedback
Advantages:
- Excellent vibration resistance
- Stable industrial operation
- Reduced maintenance requirements
- Long operating life
3. Integrated Holding Brake
Advantages:
- Maintains position after power loss
- Supports vertical motion applications
- Improves machine safety design
4. High Torque Density
The motor provides strong torque output while maintaining compact dimensions.
Benefits:
- Saves installation space
- Reduces machine size
- Improves mechanical efficiency
5. Flexible Installation Design
Features:
- Keyed shaft connection
- Rotatable connector
- Metric flange mounting
Advantages:
- Easier machine integration
- Simplified cable routing
- Improved installation flexibility
15. Recommended Same Series or Related Models
| Model | Speed | Continuous Torque | Peak Torque | Power | Feedback | Brake | Dimension | Weight |
|---|---|---|---|---|---|---|---|---|
| MPL-B310P-RJ74AA | 5000 rpm | 1.58 Nm | 3.61 Nm | 0.77 kW | Resolver | 24V Brake | 63 mm Class | 2.7 kg |
| MPL-B320P-RJ74AA | 5000 rpm | 3.05 Nm | 7.91 Nm | 1.5 kW | Resolver | 24V Brake | 80 mm Class | 3.7 kg |
| MPL-B330P-RJ74AA | 5000 rpm | 4.18 Nm | 11.1 Nm | 1.8 kW | Resolver | 24V Brake | 100 mm Frame | 5.81 kg |
| MPL-B420P-RJ74AA | 5000 rpm | 4.74 Nm | 13.5 Nm | 1.9 kW | Resolver | 24V Brake | 100 mm Class | 4.3 kg |
| MPL-B430P-RJ74AA | 5000 rpm | 6.55 Nm | 19.8 Nm | 2.2 kW | Resolver | 24V Brake | 115 mm Class | 5.5 kg |
16. Five Related Popular Models
| Model | Series | Speed | Continuous Torque | Peak Torque | Power | Feedback | Size | Weight |
|---|---|---|---|---|---|---|---|---|
| MPL-B310P | MPL Low-Inertia Servo | 5000 rpm | 1.58 Nm | 3.61 Nm | 0.77 kW | Resolver/Encoder Options | Small Frame | 2.7 kg |
| MPL-B320P | MPL Low-Inertia Servo | 5000 rpm | 3.05 Nm | 7.91 Nm | 1.5 kW | Resolver/Encoder Options | Medium Frame | 3.7 kg |
| MPL-B330P | MPL Low-Inertia Servo | 5000 rpm | 4.18 Nm | 11.1 Nm | 1.8 kW | Resolver/Encoder Options | 100 mm Frame | 4.6–5.8 kg |
| MPL-B420P | MPL Low-Inertia Servo | 5000 rpm | 4.74 Nm | 13.5 Nm | 1.9 kW | Resolver/Encoder Options | 100 mm Class | 4.3 kg |
| MPL-B430P | MPL Low-Inertia Servo | 5000 rpm | 6.55 Nm | 19.8 Nm | 2.2 kW | Resolver/Encoder Options | Large Frame | 5.5 kg |
17. Five Popular Models from the Same Brand
| Model | Product Type | Speed | Continuous Torque | Peak Torque | Power | Dimension | Weight |
|---|---|---|---|---|---|---|---|
| MPL-B320P | Low-Inertia Servo Motor | 5000 rpm | 3.05 Nm | 7.91 Nm | 1.5 kW | 80 mm Frame | 3.7 kg |
| MPL-B330P | Low-Inertia Servo Motor | 5000 rpm | 4.18 Nm | 11.1 Nm | 1.8 kW | 100 mm Frame | 4.6 kg |
| MPL-B420P | Low-Inertia Servo Motor | 5000 rpm | 4.74 Nm | 13.5 Nm | 1.9 kW | 100 mm Class | 4.3 kg |
| MPL-B430P | Low-Inertia Servo Motor | 5000 rpm | 6.55 Nm | 19.8 Nm | 2.2 kW | 115 mm Class | 5.5 kg |
| MPL-B4540F | High Torque Servo Motor | 3000 rpm | 10.2 Nm | 27.1 Nm | 2.6 kW | Large Frame | 8.6 kg |
18. Final Summary
The MPL-B330P-RJ74AA is a medium-power low-inertia servo motor designed for industrial automation applications requiring high speed, accurate positioning, reliable feedback, and mechanical holding capability.
Main features:
- 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
- Keyed shaft extension
- 24V DC holding brake
- Right-angle rotatable SpeedTEC DIN connector
- Approximate weight 5.81 kg
The motor is suitable for packaging machines, assembly automation, material handling systems, printing equipment, and precision industrial motion platforms.
With its combination of compact design, high-speed capability, resolver feedback reliability, and integrated brake function, the MPL-B330P-RJ74AA provides a practical solution for medium-duty servo applications requiring accurate and dependable motion control.