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The Allen Bradley MPL-A320P-HK74AA Servo Motor is a high-performance Kinetix MP-Series MPL low-inertia brushless AC servo motor designed for demanding industrial automation applications that require exceptional positioning accuracy, rapid acceleration, and reliable continuous-duty operation. As a member of the Rockwell Automation MP-Series MPL family, this servo motor is engineered for seamless integration with Kinetix servo drive systems, delivering highly responsive closed-loop control of position, speed, and torque for modern motion control systems.
The HK74AA configuration features a 2000-line incremental encoder, a SpeedTEC right-angle 180° rotatable DIN connector, a keyless shaft extension, and an integrated 24 V DC holding brake. Designed for 230 VAC servo systems, the motor incorporates a 100 mm frame size, a 50.8 mm magnet stack length, and a 5000 rpm rated speed. The combination of a keyless shaft and holding brake provides excellent torque transmission, improved concentricity, reduced mechanical backlash, and secure load retention during power-off conditions, making the motor particularly suitable for vertical-axis and precision positioning applications.
Featuring a compact 100 mm frame size and an approximate weight of 3.7 kg, the MPL-A320P-HK74AA delivers outstanding power density and dynamic performance. Its low-inertia rotor enables rapid acceleration and deceleration while maintaining exceptional positioning repeatability and smooth torque output.
Typical applications include packaging machinery, robotics, CNC machining centers, semiconductor manufacturing equipment, electronic assembly systems, pharmaceutical production lines, material handling equipment, printing machinery, and automated manufacturing cells.
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Model | MPL-A320P-HK74AA |
| Product Series | Kinetix MP-Series MPL |
| Product Type | AC Servo Motor |
| Motor Type | Low-Inertia Permanent Magnet Brushless Servo Motor |
| Voltage Class | 230 VAC |
| Frame Size | 100 mm |
| Magnet Stack Length | 50.8 mm |
| Rated Speed | 5000 rpm |
| Continuous Output Power | 1.3 kW |
| Continuous Stall Torque | 3.05 Nm |
| Peak Stall Torque | 7.91 Nm |
| Feedback Device | 2000-Line Incremental Encoder |
| Brake | 24 V DC Holding Brake |
| Shaft Type | Keyless Shaft Extension |
| Connector Type | SpeedTEC Right-Angle 180° Rotatable DIN Connector |
| Mounting Standard | IEC Metric Flange |
| Cooling Method | Natural Convection |
| Weight | Approximately 3.7 kg |
The MPL-A320P-HK74AA converts electrical energy supplied by a compatible Kinetix servo drive into highly accurate rotary motion while continuously transmitting incremental encoder feedback for precise closed-loop motion control.
Motion Controller
↓
Kinetix Servo Drive
↓
MPL-A320P-HK74AA Servo Motor
↓
Keyless Coupling
↓
Machine Axis
↓
Industrial Equipment
The integrated 2000-line incremental encoder continuously monitors shaft position and rotational speed, transmitting high-resolution feedback signals to the servo drive. The drive dynamically regulates motor current to achieve precise position, speed, and torque control throughout the operating cycle. The integrated 24 V DC holding brake automatically secures the shaft when drive power is removed, preventing unintended movement. The keyless shaft extension further improves concentricity and torque transmission while reducing backlash.
Primary operating functions include:
The low-inertia rotor minimizes settling time while maximizing machine productivity, positioning accuracy, and overall system efficiency.
Within industrial automation systems, the MPL-A320P-HK74AA functions as the precision motion actuator responsible for executing positioning commands while securely retaining loads whenever machine motion is stopped.
Typical automation architecture:
ControlLogix PLC
↓
Motion Control Module
↓
Kinetix Servo Drive
↓
MPL-A320P-HK74AA Servo Motor
↓
Keyless Locking Assembly
↓
Machine Axis
↓
Industrial Equipment
The servo motor delivers highly accurate and repeatable motion while the integrated holding brake enhances operational safety and positioning stability, especially in vertical-axis applications.
Typical applications include:
Suitable for:
Frequently installed in:
Ideal for:
Common applications include:
Widely used in:
Before installation, engineers should verify:
Proper installation maximizes positioning accuracy, ensures reliable brake performance, and extends motor service life.
| Component | Function |
|---|---|
| Allen Bradley Kinetix Servo Drive | Servo motor control |
| ControlLogix PLC | Motion controller |
| CompactLogix PLC | Machine automation |
| MPL-A320P-HK74AA | Precision servo motor |
| Motion Control Module | Multi-axis synchronization |
| EtherNet/IP Network | Industrial communication |
| PanelView HMI | Operator interface |
| Keyless Locking Assembly | Torque transmission |
| Ball Screw Assembly | Linear positioning |
| Industrial Power Supply | System power |
| Model | Product Type | Typical Application |
|---|---|---|
| MPL-A320P-HK74AA | AC Servo Motor | Incremental encoder, keyless shaft, holding brake |
| MPL-A320P-HK72AA | AC Servo Motor | Incremental encoder, keyless shaft, no brake |
| MPL-A320P-MK74AA | AC Servo Motor | Multi-turn absolute encoder, keyless shaft, holding brake |
| MPL-A320P-SK74AA | AC Servo Motor | Single-turn absolute encoder, keyless shaft, holding brake |
| Kinetix VP Series | AC Servo Motor | Advanced industrial motion control |
The MPL-A320P-HK74AA is a Kinetix MP-Series MPL low-inertia AC servo motor equipped with a 2000-line incremental encoder, keyless shaft extension, and an integrated 24 V DC holding brake for precision industrial motion control.
Its primary function is to provide accurate closed-loop control of position, speed, and torque while securely holding the load whenever drive power is removed.
The motor features a 100 mm frame size.
The servo motor weighs approximately 3.7 kg.
Yes. The MPL-A320P-HK74AA includes an integrated 24 V DC holding brake, making it suitable for vertical-axis and gravity-loaded applications.
A keyless shaft provides improved concentricity, eliminates keyway backlash, delivers higher torque transmission accuracy, and simplifies installation with precision locking assemblies.
It is compatible with Allen Bradley Kinetix servo drive platforms designed for MP-Series MPL motors.
Typical industries include packaging, robotics, semiconductor manufacturing, CNC machining, electronics manufacturing, pharmaceutical production, food processing, and automated assembly.
The motor uses a 2000-line incremental encoder, providing high-resolution position and speed feedback for accurate closed-loop servo control.
It is commonly installed on robotic axes, vertical lifting systems, CNC machines, conveyor positioning systems, packaging equipment, semiconductor machinery, and other precision manufacturing equipment.
The Allen Bradley MPL-A320P-HK74AA Servo Motor is a compact, high-performance motion solution engineered for demanding industrial automation applications. Featuring a 100 mm frame size, a low-inertia rotor, a 2000-line incremental encoder, a 5000 rpm rated speed, a keyless shaft extension, an integrated 24 V DC holding brake, and a SpeedTEC quick-connect interface, it delivers exceptional positioning accuracy, rapid dynamic response, and dependable long-term performance.
With an approximate weight of 3.7 kg, the MPL-A320P-HK74AA integrates easily into advanced machine designs while providing reliable precision motion control. When combined with compatible Allen Bradley Kinetix servo drives, ControlLogix PLCs, motion controllers, EtherNet/IP communication systems, and industrial automation equipment, it enhances machine productivity, improves operational safety, and supports long-term industrial reliability.