®

Blue Chip

Automotive Duty Motors

TEFC Motors that Exceed the Toughest Standards in the

Automotive Industry Today...

Marathon Electric’s Blue Chip XRI® Automotive Duty Motors are designed tough

with built-in reliability for years of trouble free service. Totally enclosed severe

duty construction and additional epoxy coatings protect against the harshest

environments, thus prolonging life and reducing unnecessary downtime. 

Rugged die cast aluminum rotors are precision balanced. This reduces overall

system vibrations, thereby increasing equipment longevity. Vibration tests are

documented and shipped with each motor as standard.

Our Blue Chip XRI® Automotive Duty Motors are inverter duty rated and

incorporate our exclusive MAX GUARD® insulation system which combines

corona resistant magnet wire and a unique "low stress" winding configuration.

The Blue Chip XRI® Automotive Duty Motor offers no lead length restrictions

and provides for power matched performance with all manufacturers of AC

drives. 

The Blue Chip XRI® Automotive Duty Motors exceed EPAct and NRCan

efficiency requirements and are energy compliant to the highest efficiency

levels in the motor industry as promoted by the Consortium for Energy

Efficiency (CEE). 

The Blue Chip XRI® Severe Duty motor meets Ford’s EM-1 specifications for

automotive duty motors. These motors incorporate features that guarantee

years of high performance in the most demanding automotive applications

from parts forming, metal cutting, and assembly to test stands. These motors

meet or exceed the vibration, temperature rise, and sound levels contained

within the motor industries toughest specification.

The Blue Chip XRI® IEEE-841 automotive duty motor meets General Motors

7E-TA specification for sound levels, vibration, and temperature rise. These

motors incorporate an Inpro/Seal® VBX bearing isolator for added protection

against corrosive environments. This added protection shields vital

components from metal chips, cutting fluids, and oil-based contaminants. 

The Blue Chip XRI® Severe Duty and Blue Chip XRI® IEEE-841 motors are

provided with actual test and vibration data for added assurance of quality. 

U-Frame Motors that are Driven to be the Best...

Our U-Frame motors are available to meet a wide range of performance

requirements, from 3/4 through 100 horsepower. These motors incorporate

rugged cast iron construction that resists vibration and shock in the most

demanding industrial applications.

Marathon Electric’s U-Frame motors have built-in features like premium energy

efficient designs, C-Face kits, and power matched performance with all AC drive

manufacturers. These industry work horses provide excellent value and

dependable performance you can count on in tough, dirty, oil-laden

environments.

These motors meet DaimlerChrysler NPEM-100 and NPEM-105, Ford EM-1, and

General Motor’s GM-7EH and GM–7EQ specifications.

®

Blue Chip XRI®

Severe Duty

Blue Chip XRI® IEEE-841

U-Frame

Standard and Premium

Efficient Designs

Marathon Electric Manufacturing Corporation

Motors for the Long Run!

XRI®

ENERGY

EFFICIENT

MOTORS
Quality Automotive Duty Motors

Motors That Run the Toughest Applications

Motors for the Long Run! 

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SB547-3157M/JL/6-01/2500/DC

Marathon Electric Manufacturing Corporation

A Subsidiary of Regal-Beloit Corporation

P.O. Box 8003 • Wausau, WI 54402

Phone: (715) 675-3311 • Fax: (715) 675-8030

Website: www.marathonelectric.com 

For more information contact :

®

Blue Chip XRI® Severe Duty

Meets Ford EM-1 T-Frame

Blue Chip XRI® IEEE-841

Meets General Motors GM 7E-TA

U-Frame Premium Efficient

Meets GM-7EQ and GM-7EH

Made in the U.S.A.

Totally Enclosed Fan Cooled Motor Features...

• Meets Ford EM-1 and General Motor’s GM 7E-TA Specification

• XRI® Severe Duty IP-54 Construction, XRI® IEEE-841 IP-56 Construction

• Inverter Duty Rated with MAX GUARD® Insulation System

• Extended Grease Tubes, Regreasable in Service

• CSA Certified for Division II Hazardous Locations, Class I, Groups A, B, C, 

and D, Temperature Code T2B

• Actual Test and Vibration Data Supplied With Each Motor 

• Brass Drain and Breather

• Less than 80 dBA Sound Pressure on Most Ratings

• UL Recognized and CSA Certified

• Higher efficiency levels as promoted by Consortium for Energy Efficiency (CEE)

• Power Matched for Use With All Drive Manufacturers

• Inpro/Seal® VBX bearing isolators for Added Protection (Standard on Blue Chip

XRI® IEEE-841, GM 7E-TA)

• Oversized bearings with bearing caps (254T-449T) L-10 life of 100,000 

hours for direct coupled loads

• Super-premium POLYREX® EM high-temperature polyurea grease for bearing lubrication

• Internal and External Epoxy Coatings

• 3 Year Warranty for Blue Chip XRI® Severe Duty Motors

• 5 Year Warranty for Blue Chip XRI® IEEE-841 Motors

U-Frame Motor Features...

• Standard Efficient design meets General Motors GM-7EQ and satisfies DaimlerChrysler 

NPEM-100 and Ford EM-1.

• Premium Efficient design meets General Motors GM-7EQ & GM-7EH and satisfies 

DaimlerChrysler NPEM-100, NPEM-105 and Ford EM-1

• 100% Cast Iron Construction

• Class F Insulation System, 65O C Temperature Rise at Full Load

• Inverter Rated for Use With Adjustable Frequency Drives

• UL Recognized and CSA Certified

• Exceeds EPAct ‘92 and NRCan Efficiency Levels

• Regreasable Ball Bearings

• Corrosion Resistant Paint

• Dynamically Balanced for Low Vibration

• Oversized Bearings Yields Longer, More Dependable Service Life

• Super-premium POLYREX® EM high-temperature polyurea grease for bearing 

lubrication

• Oversized, Fully Gasketed, Cast Iron Terminal Box

• Exceeds NEMA MG-1, Section IV, Part 31 Spike Resistance Requirements

• NEMA Design B Performance

• Single Voltage 3-Lead Connection

• Meets Automotive Requirements for Sound Power Levels

• 5 Year Warranty