Allen-Bradley MPL-B520K-MJ72AA Low Inertia Servo Motor

Product Overview

The MPL-B520K-MJ72AA servo motor belongs to the Allen-Bradley MPL premium permanent magnet rotary series. This low-inertia motor delivers a rated speed of 4000 RPM and operates at a 400-volt class B rating. With a 165 mm frame size and a 2-inch magnetic stack length, it ensures both compactness and high performance.

At 12.00 lbs (5.44 kg), the MPL-B520K-MJ72AA motor integrates a shaft key but no shaft seal, making it ideal for precision-driven applications. Its circular DIN right-angle connectors rotate 180 degrees, offering flexible installation.

Technical Specifications

• Manufacturer: Allen Bradley

• Product Line: MPL Servo Motors

• Part Number: MPL-B520K-MJ72AA

• Weight: 12.00 lbs (5.44 kg)

• Voltage Class: 400 Volts (Class B)

• Frame Size: 165 millimeters

• Magnetic Stack Length: 2 inches

• Rated Speed: 4000 RPM

• Series Type: Low inertia

• Feedback: Multi-turn high-resolution encoder

• Shaft: Shaft key, no shaft seal

• Connectors: Circular DIN, right angle, rotatable 180°

• Brake: None

• Mounting Flange: IEC metric

• Operating Temperature Range: 0 to 40 °C

• Surface Temperature in Operation: Up to 125 °C

Installation and Safety Notes

The MPL-B520K-MJ72AA servo motor includes a mounting pilot for accurate alignment on machinery. Allen-Bradley recommends using stainless steel fasteners during installation. Always secure cables to prevent uneven tension, and confirm couplings and shaft keys are correctly fixed.

Adequate cooling is crucial, especially in enclosed environments. Ensure sufficient clearance around the motor, or apply forced airflow for proper thermal management. The unit can reach outer surface temperatures of 125 °C, so operators must avoid accidental contact.

Benefits of the MPL Servo Motor

• Compact 165 mm frame with high torque capacity.

• Multi-turn high-resolution encoder enhances precision feedback.

• Circular DIN connectors ensure simplified and reliable wiring.

• Low inertia design supports fast acceleration and high responsiveness.

FAQs

Q: Is the MPL-B520K-MJ72AA motor brand new and original?
A: Yes, we only supply brand-new, original Allen-Bradley motors.

Q: What is the typical lead time for shipment?
A: We ship within 3 days to 2 weeks, depending on order size and logistics.

Q: Which couriers are available for delivery?
A: We commonly use DHL, but other options can be arranged upon request.

Q: Does the MPL-B520K-MJ72AA motor include a brake?
A: No, this model comes without a brake.

Q: What precautions should I take during installation?
A: Ensure proper cable restraint, correct shaft alignment, and clearance for cooling.

Q: What is the return policy if there is a quality issue?
A: We support returns within 30 days if quality issues are confirmed.