NORD’s Redesigned 100 Frame Asynchronous Motors Usher in a New Era of Modern Engineering and Improved Performance

NORD’s new 3 HP and 4 HP motors are service friendly, have an optimized design that is ready to meet the worldwide demand for energy efficient drives.

NORD's newly redesigned 100 frame motors are the first step in updating their asynchronous motor portfolio with an optimized electrical, mechanical, and visual design. The new 3 HP and 4 HP premium efficient motors offer a simplified assembly including the elimination of a copper rotor as the motors produce the same energy efficiency without it. This change results in reduced costs and sell price to the consumer. Not changing in the design are the outer dimensions and the mounting options available - direct mount, NEMA, and IEC, making the new motors drop-in compatible for existing systems. While the new motors will be the preferred offering beginning Q1 2022, legacy versions are not being immediately discontinued and will still be available for a period.


The exterior of the motor has new curved cooling fins that have been adapted in depth and shape. These fins curve around the terminal box and the motor to enhance airflow and optimize cooling. Sharp edges and corners have been removed from the terminal box to smooth the design and provide easier maintenance. The need for NPT adapters has been eliminated as there are now directly integrated imperial and metric conduit connections for ease of use and reduction of parts. Additionally, curved feet on the new design give the motor greater strength, stability, and a streamlined appearance. The fan cover has also received an updated radial design and the screws of the hood have been rotated by 45 degrees, making them accessible in case a variable frequency drive is installed.

Along with visual updates, the 100 frame motors have several mechanical updates such as an optimized rotor fan assembly and encoder installation. The rotor fan has been designed with a quick click mechanism for simple install or removal, making maintenance and replacements fast and easy. The incremental encoders have full impact protection and improved torque support added to the bearing shield. The encoder position itself has been moved between the fan and the B-end bearing shield. These assembly changes result in protection against mechanical influences and better cooling of the motor as the encoder is not blocking the fan inlet. In addition to moving the encoder position, retrofitting of encoders is now possible and with the aid of a plug-on shaft, incremental encoders can easily be retrofitted to a standard motor without replacing or reworking the rotor. Special options such as a CAN based absolute encoder, hand wheel, and cast-iron fan are still available for configuration.

For more information on NORD's new 100 frame motors, call 888-314-6673 or visit www.nord.com.

Featured Product

Model TR1 Tru-Trac

Model TR1 Tru-Trac

The Model TR1 Tru-Trac™ linear measurement solution is a versatile option for tracking velocity, position, or distance over a wide variety of surfaces. An integrated encoder, measuring wheel, and spring-loaded torsion arm in one, compact unit, the Model TR1 is easy to install. The spring-loaded torsion arm offers adjustable torsion load, allowing the Model TR1 to be mounted in almost any orientation - even upside-down. The threaded shaft on the pivot axis is field reversible, providing mounting access from either side. With operating speeds up to 3000 feet per minute, a wide variety of configuration options - including multiple wheel material options - and a housing made from a durable, conductive composite material that minimizes static buildup, the Model TR1 Tru-Trac™ is the ideal solution for countless applications.