AC Motor Replacement: Find the Right Motor Fast
The good news is that identifying the correct replacement is easy. With a few key details from your existing motor and the right online tools, you can find a compatible option in minutes.
Benefits of Replacing an AC Motor
Replacing an older or worn‑out motor offers more advantages than resuming operation. Modern motor designs often provide:
Improved energy efficiency
Today's motors are more energy efficient. Advances in designs and materials mean less energy is lost during operation. These motors use electricity more efficiently while delivering the same performance. In many applications, this leads to long‑term cost savings.
Better reliability and reduced downtime
Elements like insultation materials, cooling fins and permanent magnets enable motors to dissipate heat better. Modern motors can also handle variations in load more effectively. This helps prevent unexpected failures.
Lower maintenance needs
A new motor means new bearings, new grease, new seals, and fresh starting point to take on heat generated during use. That reduces the time and money spent on maintenance.
Access to updated technology
Integrated drives and connectivity to the Industrial Internet of Things (IIoT) make today’s motors “smart motors.” This can help with tracking performance and maintenance needs. Additionally, you may be able to upgrade to premium‑efficiency models, corrosion‑resistant designs, or improved enclosures that better suit your environment.
A practical solution for obsolete models
If your current motor is discontinued, a suitable equivalent is often available. Often, changing to a new model will result in improved performance.
What Information Do You Need to Match a Motor?
Before looking for a replacement, gather some key details. Your existing motor's nameplate should have most of this information. These specifications help ensure the new motor will fit and perform correctly.
Essential information includes:
- Model or catalog number
- Horsepower (HP)
- Speed (RPM)
- Voltage
- Phase
- Frame size
- Enclosure type (e.g., TEFC, ODP)
- Mounting style (footed, C‑face, etc.)
- Service factor
- Full load amps (FLA)
- Any special features or ratings (High‑temperature ratings, hazardous location certifications, brake packages, or washdown construction).
Even a partial model number can be helpful when using online tools.
Once you have this information, you’re ready for the easiest step in the process: finding a match with the Regal Rexnord Product Cross‑Reference Tool.
Using the Regal Rexnord Product Cross Reference Tool
The Product Cross Reference Tool can help you quickly identify direct replacements, functional equivalents, or recommended alternatives. It saves time and removes guesswork, especially when working with older or discontinued models.
What the tool does
- Matches competitor motor numbers to models from Regal Rexnord brands
- Provides exact replacements when available
- Suggests equivalent or upgraded options
- Supports full and partial model numbers
- Offers side‑by‑side product information and spec sheets
- Gives you information about nearby motor distributors
How to use the Cross Reference Tool to Find a New Motor
- Go to the Product Cross Reference Tool
www.regalrexnord.com/product-cross-reference - Enter your model, part, or catalog number.
Find this information on your nameplate. Partial numbers also work. - Review your results
You may see:- Direct replacements
- Equivalent models
- Recommended upgrades
- Compare product details
Check HP, speed, frame size, enclosure, and special features. - Download product spec sheets, CAD drawings and product manuals
This is the fastest way to confirm fit and performance. - Reach out if needed
The Regal Rexnord team or its network of distributors can help verify compatibility for specialized applications.
When the tool is most useful
- Your motor’s part number is discontinued
- You’re switching to a higher‑efficiency model
- You want to compare options across brands
- You need a fast answer without browsing multiple catalogs
More Tips for a Smooth Motor Replacement
Match the frame and mounting
The motor must physically fit into the existing space. Frame size and mounting type determine whether the replacement will bolt in without modification.
Check your application load requirements
Make sure the new motor can deliver the torque and speed your application needs.
Consider efficiency upgrades
Premium‑efficiency motors can reduce energy costs, even in light‑duty applications.
Look for special conditions
If your motor operates in washdown areas, hazardous locations, or high‑temperature environments, choose a model designed for those conditions.
Start Your Search For a Replacement Motor at Regalrexnord.com
Replacing an AC motor doesn’t have to be complicated. With the right information from your nameplate, you can identify a compatible motor quickly. Whether you need a direct match, a functional equivalent, or an upgrade, the Regal Rexnord Product Cross Reference Tool is the fastest way to find the right solution.
Use the Regal Rexnord Product Cross Reference Tool and find a replacement motor in minutes.
Talk to Our Sales Team
We're here to help. Our team of experts is ready to help energy-efficiently power your business.
Frequently Asked Questions About Motor Replacement
What if my motor model is obsolete?
The cross-reference tool will show the closest available equivalent or recommend an upgrade.
Do I need the full model number to use the tool?
No. Partial numbers or brand names can still return useful matches. If you know certain aspects of your application, you can use Regal Rexnord’s Electric Motor Selector to find a match.
Can I replace my motor with a different brand?
Yes. The tool will match competitor models to alternatives from industry-leading brands like LEESON, Century, Genteq a nd more.
How do I know if a motor is compatible?
Match HP, RPM, voltage, frame, enclosure, and mounting. Spec sheets will confirm the rest.
Do I need an engineer to pick a replacement?
Not always. For standard applications, the cross-reference tool provides everything you need. For unique or critical systems, contact the experts at Regal Rexnord or your local distributor or maintenance contractor for additional guidance.
Page updated: March 6, 2026