Nidec Motor Corporation Vertical HOLLOSHAFT Inverter Duty Motors Now Available Off the Shelf

ST. LOUIS –June 30, 2019 – To respond to the growing demand for variable speed motors used to drive vertical pumps in municipal and industrial applications, Nidec Motor Corporation now stocks a line of totally enclosed fan cooled CORRO-DUTY® Vertical HOLLOSHAFT® Inverter Duty Motors. 

These U.S. MOTORS® brand motors are cast iron, and designed with full Class H insulating materials to withstand the steep-wave-front voltage impressed by the VFD waveform. They are designed to run smoother and cooler on inverter power supplies, which can lead to improved system efficiency and reliability.

In the past, this product offering was built-to-order, but can now be purchased off-the-shelf.

The motors are NEMA Premium® Efficient, and are available in 5-300 HP, with 2 & 4 Poles (3600 & 1800 RPM), and with frame sizes 184-449.

About Nidec Motor Corporation
NMC is a leading manufacturer of commercial, industrial, and appliance motors and controls. The NMC product line features a full line of high efficiency motors, large and small, which serve industrial, residential, and commercial markets in applications ranging from agriculture, water treatment, mining, oil and gas, and power generation to pool and spa motors, air conditioning condensers, rooftop cooling towers, and commercial refrigeration. It also makes motors, controls, and switches for automotive and commercial markets. For more information, visit

Nidec is a global corporation comprised of over 300 group companies with highly reputed engineering capabilities in motor-related fields. Nidec Group specializes and handles motor application products based on “everything that spins and moves,” from small precision to supersized motors and drives.

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