NEMA Premium Efficient X$D Ultra

Rugged construction, superior performance

The X$D Ultra® family of products ranges from 1-350 HP and is built to the highest standards to maximize your return on investment. X$D Ultra is a complete cast iron NEMA Premium® Efficient motor. The Six Star Bearing System™ ensures long bearing life and is complemented by an overall vibration of 0.04 ips (inches per second), which is half of IEEE-841 standards. The X$D Ultra also incorporates the GEGARD™ insulation system which has the ability to withstand repeated 0.1 microsecond rise time/2000 volt spikes for 460 and 575 line voltages. All motors are inverter compatible and have the speed range capabilities stamped on the nameplate.

Frame Size 143-449
HP Range 1-350
Poles 2,4,6 & 8
Voltages 230/460, 460, 575
Efficiency NEMA Premium IP55
Insulation Class H
Bearings Single Shielded ball or open roller
Vibration .04ips


Industries: Oil & Gas, Power& Energy, Mining & Minerals, Water & Wastewater, Cement, Pulp & Paper, Metals, Chemical

Features & Benefits:

  • GEGARD2000 Insulation System
    Integral to motor life and reliability is a robust insulation system. The GEGARD system utilized in X$D Ultra™ products gives a wide thermal margin between the insulation components and designed operation temperatures. All components except motor leads have been selected using Class H materials, while the motor temperature is kept below Class B temperature rise.
  • Six Star Bearing System ™
    Another key component in motor operation and longevity is the bearing system. Our Six Star Bearing System ™ has been designed to significantly reduce the potential for bearing failure. Vibration has been reduced to an industry leading 0.04 ips, reducing a leading cause of bearing failure. Regreasing consideration has been made easy with extended greasing provisions, which provides motor users the improved ability to regrease these motors when they are installed in the application.

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GE’s Power Conversion business offers a comprehensive range of motors and generators that serve our customers and their processes across a wide range of applications
IEEE 841 X$D Ultra® motors meet or exceed the IEEE 841-2009 standard. With an advanced bearing system and class H inverter duty insulation, a test report of each motor to ensure performance, five-year warranty, and all the advanced features that come standard, the X$D Ultra 841 is one of the most durable and reliable motors you can buy.
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