Skip to main contentSkip to footer
Slide 1 of 3

Overview

Factory-sealed surplus Allen-Bradley MPL-B420P-SJ74AA low-inertia brushless rotary servo motor. This high-performance MP-Series motor features a 460V AC rating, 5000 RPM maximum speed, a keyed shaft extension, and an integrated 24V DC holding brake. Sealed in its original packaging, this pre-owned unit offers original factory reliability at a surplus value, making it an ideal drop-in replacement for Kinetix drive systems.

Allen-Bradley MPL-B420P-SJ74AA Servo Motor, 460VAC, 5000 RPM, Keyed Shaft, Hiperface, Brake, Sealed Pre-Owned

Model: MPL-B420P-SJ74AA
Web Code: 20251793
Sold and shipped by | 3.6 seller rating (44 reviews)

Available for deliveryAvailable online only

Delivery times vary by location. Most Marketplace items leave sellers' locations within 2 business days. Allow additional time for shipping.

Seller Return Policy

Read return policy

Warranty Information

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

Product Overview:

The Allen-Bradley MPL-B420P-SJ74AA is a factory-sealed, pre-owned low-inertia brushless rotary servo motor designed for high-performance industrial automation systems. It features a 460V AC armature voltage rating, a maximum speed of 5000 RPM, and an 115 mm frame size. Equipped with an integrated mechanical holding brake and a high-resolution single-turn encoder, this MP-Series motor delivers precise motion control and reliable load security for demanding motion applications.

Key Features:

• Tracks precise rotary positioning using a high-resolution single-turn encoder with the Hiperface communication protocol.

• Features an integrated 24V DC mechanical holding brake to secure vertical loads and prevent machine sagging during power-downs.

• Delivers reliable mechanical power with a 460V AC voltage rating and a maximum operating speed of 5000 RPM.

• Provides a secure, slip-free mechanical connection to machinery via a standard keyed shaft extension.

• Offers flexible cable routing options using a right-angle, 180-degree rotatable SpeedTEC DIN connector.

• Minimizes mechanical wear and system lag through a specialized low-inertia brushless motor architecture.

• Built as a direct, factory-authorized drop-in component for industrial machinery requiring high-production duty cycles.

• Sealed in its original factory packaging to ensure clean internal components and zero operational wear.

What’s Included:

• Allen-Bradley MPL-B420P-SJ74AA Servo Motor with integrated 24V DC brake, factory installation key.

Why Choose Allen-Bradley MPL-B420P-SJ74AA:

The Allen-Bradley MPL-B420P-SJ74AA provides a reliable, heavy-duty solution for industrial motion control and automated machinery. Its combination of high-speed performance, active load-holding protection, precise feedback protocol, and factory-sealed condition makes it suitable for manufacturing environments where you want to minimize downtime and ensure seamless compatibility with Kinetix servo drive platforms. A compatible Kinetix drive and matching SpeedTEC power/feedback cables are required for operation.

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

Shipping Charges

Free standard shipping may be available on orders over a minimum amount (before taxes, fees, and promo codes). Shipping charges may vary based on item size and your shipping address. Want a shipping charge estimate? Simply add an item to your cart, then access the cart and enter your postal code in the shipping estimate section.

Processing Time

Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

Shipping Area Restrictions

Shipping is not available in the following areas*:
  • No restrictions in Canada
*Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.
Product Category
Return/Exchange Period
Condition

Learn more about returning a Marketplace product