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Allen-Bradley MPL-B420P-MJ74AA Low-Inertia Brushless Servo Motor

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Allen-Bradley MPL-B420P-MJ74AA

by Allen-Bradley

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OverviewUnlock the full potential of your industrial automation with the Allen-Bradley MPL-B420P-MJ74AA, a premium low-inertia brushless servo motor crafted for exceptional performance and exact motion control. This robust motor, a key component of the esteemed Bulletin MPL series, is engineered to meet the stringent demands of contemporary industrial settings. Operating efficiently at 460V AC, the MPL-B420P-MJ74AA delivers a strong 4.74 Nm of rated torque and achieves an impressive maximum speed of 5000 RPM, ensuring incredibly fast and responsive dynamics. Its multi-turn, high-resolution absolute encoder facilitates effortless integration by providing incredibly accurate feedback for critical positioning. For enhanced safety and precise load retention, the motor includes a dependable 24V DC brake. A practical keyed shaft and a right-angle SpeedTEC DIN connector further simplify installation, guaranteeing a secure and reliable connection even in challenging industrial environments. This motor is an optimal selection for applications demanding quick acceleration, accurate positioning, and unwavering performance.Key Features Highly Responsive Low-Inertia Design: Developed for quick acceleration and deceleration, providing superior dynamic performance essential for high-speed and precision operations. High-Resolution Absolute Feedback: Features a multi-turn, high-resolution absolute encoder that provides exceptionally accurate position data, eliminating the need for homing routines after power cycles. Secure Keyed Shaft Extension: The sturdy keyed shaft ensures proper torque transmission and prevents slipping, enhancing the reliability and lifespan of your mechanical connections. Integrated 24V DC Holding Brake: Offers immediate and secure load holding, improving safety during power interruptions and enabling precise positioning in vertical or inclined applications. Versatile SpeedTEC DIN Connector: Includes a right-angle SpeedTEC DIN connector with 180° rotation capability, simplifying cable management and ensuring swift, reliable electrical connections. Compact & IEC Compliant Design: Optimally sized with IEC metric mounting holes, facilitating simple and smooth integration into control panels and machinery without requiring excessive space. Optimized for 460V AC Operation: Specifically engineered to perform perfectly within 460V AC industrial power systems, ensuring efficient energy use and stable operation. Technical Specifications Brand: Allen-Bradley Series: MPL Low-Inertia Brushless Servo Motors Part Number: MPL-B420P-MJ74AA Voltage: 460V AC Frame Size: 115 mm (4.53 in.) Stack Length: 50.8 mm (2.0 in.) Rated Speed: 5000 RPM Rated Torque: 4.74 Nm Encoder Type: Multi-turn High-Resolution Absolute Encoder (Absolute Feedback) Shaft Type: Keyed Shaft Extension Connector Type: SpeedTEC DIN, Right Angle, 180° Rotatable Brake: 24V DC Holding Brake Mounting Type: IEC Metric, Free Mounting Holes (Type FF) Condition: New Applications Vertical Axis Motion Systems: Delivers precise and secure positioning for lifting, lowering, and holding substantial loads with its integrated brake. Robotics and Pick-and-Place Machines: Its low-inertia engineering and high-resolution feedback are perfect for rapid, accurate, and repeatable movements in robotic cells. Automated Packaging Lines: Ensures high-speed and precise management for indexing, sealing, and material handling in demanding packaging operations. Precision CNC Machinery: Provides the accuracy and dynamic responsiveness necessary for milling, turning, and grinding applications where tight tolerances are crucial. Conveyor and Indexing Systems: Guarantees smooth, regulated movement and dependable stopping capabilities for efficient material flow and positioning. Printing and Converting Equipment: Offers the precision and speed required for web handling, tension regulation, and cutting applications. Why Choose This Model?The multi-turn absolute encoder guarantees unparalleled precision, making this servo motor an exceptional choice for demanding applications.Order NowElevate the performance of your industrial operations. Order the Allen-Bradley MPL-B420P-MJ74AA today!FAQWhat is the rated torque of the MPL-B420P-MJ74AA?The rated torque for this model is 4.74 Nm.Does this servo motor include a brake?Yes, it features an integrated 24V DC holding brake.What type of encoder is used in this motor?It utilizes a multi-turn, high-resolution absolute encoder for precise feedback.What is the operating voltage for this device?The MPL-B420P-MJ74AA operates at 460V AC.Is the shaft keyed?Yes, it features a keyed shaft extension for secure torque transmission.

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PRODUCT DETAILS

Allen-Bradley MPL-B420P-MJ74AA

Overview

This is a genuine Allen-Bradley component from the Allen-Bradley Servo Motors family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Allen-Bradley catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Allen-Bradley automation ecosystem
  • Engineered to integrate inside Allen-Bradley Servo Motors installations

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Allen-Bradley equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Allen-Bradley platform with documented conversion notes for the Allen-Bradley Servo Motors family

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Brand: Allen-Bradley
  • Series: MPL Low-Inertia Brushless Servo Motors
  • Part Number: MPL-B420P-MJ74AA
  • Voltage: 460V AC
  • Frame Size: 115 mm (4.53 in.)
  • Stack Length: 50.8 mm (2.0 in.)
  • Rated Speed: 5000 RPM
  • Rated Torque: 4.74 Nm
  • Encoder Type: Multi-turn High-Resolution Absolute Encoder (Absolute Feedback)
  • Shaft Type: Keyed Shaft Extension
  • Connector Type: SpeedTEC DIN, Right Angle, 180° Rotatable
  • Brake: 24V DC Holding Brake
  • Mounting Type: IEC Metric, Free Mounting Holes (Type FF)
  • Condition: New

Applications

  • Vertical Axis Motion Systems: Delivers precise and secure positioning for lifting, lowering, and holding substantial loads with its integrated brake.
  • Robotics and Pick-and-Place Machines: Its low-inertia engineering and high-resolution feedback are perfect for rapid, accurate, and repeatable movements in robotic cells.
  • Automated Packaging Lines: Ensures high-speed and precise management for indexing, sealing, and material handling in demanding packaging operations.
  • Precision CNC Machinery: Provides the accuracy and dynamic responsiveness necessary for milling, turning, and grinding applications where tight tolerances are crucial.
  • Conveyor and Indexing Systems: Guarantees smooth, regulated movement and dependable stopping capabilities for efficient material flow and positioning.
  • Printing and Converting Equipment: Offers the precision and speed required for web handling, tension regulation, and cutting applications.

Why Choose the MPL-B420P-MJ74AA?

The multi-turn absolute encoder guarantees unparalleled precision, making this servo motor an exceptional choice for demanding applications.

Availability & Shipping

  • In stock: MPL-B420P-MJ74AA ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every MPL-B420P-MJ74AA ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

The rated torque for this model is 4.74 Nm.

Machine down? We ship parts the same day.

New, surplus, and refurbished Allen-Bradley inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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