Allen Bradley MPL-B320P-RJ22AA MPL Series Low-Inertia Servo Motor

2026-04-20T19:50:44-07:00

Type: Rotary Servo Motor
Price: 66.00

Product Overview

The Allen Bradley MPL-B320P-RJ22AA represents a high-performance solution for motion control applications requiring rapid acceleration and precise positioning. As a premium permanent magnet rotary servo motor, it significantly reduces system inertia, allowing for higher throughput in cycling applications. This motor interfaces seamlessly with Kinetix drives to provide a complete, synchronized motion solution. We supply this unit as 100% Brand New and Original, ensuring the integrity of the neodymium magnets and internal windings for your critical production lines.

Technical Specifications

The MPL-B320P-RJ22AA utilizes a high-torque-density design to maximize output in a compact 100 mm frame:

Feature | Specification
Manufacturer | Allen Bradley
Product Line | MP-Series (MPL)
Voltage Class | 400V AC
Frame Size | 100 mm
Magnetic Stack Length | 2.0 inches
Rated Speed | 5000 RPM
Feedback Type | 2-Pole Resolver
Shaft Design | Keyed Shaft / No Shaft Seal
Enclosure/Mounting | IEC Metric Flange
Connectors | Circular Bayonet (Facing Shaft)
Brake Option | No Brake
Weight | 8.75 lbs (3.97 kg)

Engineering Advantages

The MPL-B320P-RJ22AA solves specific mechanical and electrical challenges in modern machine building:

Optimized Dynamic Response: The low-inertia rotor design allows the motor to reach its 5000 RPM rated speed almost instantaneously. This high torque-to-size ratio minimizes the "move-and-settle" time in pick-and-place or packaging machinery.

Superior Environmental Feedback: The 2-pole resolver provides robust position feedback in harsh environments. Unlike optical encoders, this resolver withstands high vibration and elevated temperatures, preventing signal degradation in heavy industrial settings.

Simplified Integration: The circular bayonet connectors rotate to face the shaft, providing flexible cable routing. This design facilitates installation in narrow machine frames where space for cable bend radii is restricted.

Thermal Efficiency: Premium permanent magnet technology reduces internal heat generation. The motor dissipates heat effectively through its IEC metric flange, allowing for high-duty cycle operation without requiring external forced-air cooling.

FAQs

Can I install a shaft seal later if my environment changes?

While the MPL-B320P-RJ22AA ships without a shaft seal (IP50 rating), you can install a field-replaceable kit to upgrade the unit to an IP66 rating. This protects the internal bearings from high-pressure water jets and oil splashes common in food and beverage applications.

What is the advantage of the 2-pole resolver over a multi-turn encoder?

The resolver is an analog, transformer-based device. It lacks sensitive onboard electronics, making it the preferred feedback choice for applications involving extreme shock, vibration, or high-ambient heat where digital encoders typically fail.

Does this motor support 200V AC power systems?

No. The "B" in the part number (MPL-B) designates a 400V AC voltage class. Attempting to run this motor on a 200V class drive will result in significantly reduced torque and inability to reach the 5000 RPM rated speed.

What are the mounting requirements for the IEC metric flange?

The motor utilizes standard metric mounting holes. Ensure the mounting surface is flat and unpainted to facilitate optimal heat transfer and maintain shaft alignment, which prevents premature bearing wear and vibration.