Vertical motor offers increased output, less noise

GE Energy’s Pegasus vertical motor features customization to customer specs, RCF tool, remote monitoring capabilities .


GE Energy’s Motors business produces the Pegasus – a marketplace solution for pump OEMs and end users who require large, slow speed, vertically mounted motors.

GE, completing more than 9,000 custom design tests for pumps and vertical motors to create Pegasus, aims to significantly reduce or completely eliminate Reed Critical Frequency (RCF) issues, offering a solution to the common industry problem of vibration issues for vertical applications. The MHV vertical motors are designed, engineered, and customized for PV 500 to PV 900 frame requirements.

“Since the Pegasus is based on customer specs, a customer can call us and state their system’s pump needs,” says Nimesh Sharan, Product Manager for Medium and Large Motors at GE Energy. “Then we can plug their custom data into the new Pegasus technology. The result is an automatic build sheet for the customized motor.”

The vertical units have an open end and are designed to appreciably reduce noise and vibration, the latter of which can cause harmful repercussions and downtime for the system. Pegasus can also be constructed in an enclosed configuration.

Pegasus carries a worldwide warranty and full product service availability. All frames will be shipped ready to integrate with remote monitoring capabilities. Standard RMU capabilities include bearing/winding RTDs and vibration sensors.

“Our advantage of having the newest design in the marketplace is that we have the most modern design tools to deliver the best vertical motor solutions,” says Sharan.

Pegasus is ideal for multi-faceted installations where smooth-driven equipment is required, including centrifugal pumps, centrifugal compressors, and fans. Other uses include reciprocating loads, belt drives, chippers and cutters, crushers or any other type of machine with high alternating and/or shocking loads not covered by standard products.

In addition to increased output/frame, reduced noise and vibration levels, and enhanced reliability, the Pegasus Vertical line offers improved power density, bearings offerings, and ratings capabilities.

GE Energy

- Edited by Gust Gianos, Control Engineering,

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