Groschopp is a fractional horsepower motor manufactuer located in Sioux Center, Iowa.The Roots of Quality

The foundation of Groschopp, Inc. began in 1930 as a company called Wincharger. Based in Sioux City, Iowa, Wincharger was a pioneer in the development of wind powered generators, primarily marketed in rural areas of the U.S. where modern electrical service had yet to reach. By the late 1930s, the young company attracted the attention of Zenith Radio Corporation, who sought to bring radios powered by Wincharger’s generators to rural regions.

During World War II, the Wincharger Company became the world’s largest manufacturer of dynamotors and inverters, leveraging its success into motors and farm generators in the 1950s post-war economy. In 1968, Dyna-Technology purchased the Wincharger division from Zenith, eventually relocating the company’s small motor operations to Sioux Center, Iowa.

In 1980, a German based manufacturer of high quality small motor and gear drives, Groschopp & Co., GmbH, purchased the small motor division of Dyna-Technology. The company was acquired by a private trust in 1996 and still operates under the Groschopp name today, even though it’s separate from Groschopp’s European operations. Check out our blog for more information on how to tell if a motor was manufactured by us or Groschopp and Co., GmbH.


Groschopp Today

Today, our dedicated team of around 200 employees continues to build our motors in-house. We strive to provide the best possible experience we can for our customers and work alongside them to find the best solution to their individual situation. By using our proprietary software program, MOTORTEC™, we can create drawings, models and performance data charts for 100,000 possible motor or gearmotor combinations in just minutes to ensure the best fit for nearly any situation. We also have a Fast Track department to make sure customers with large and small orders are taken care of as efficiently as possible.


Groschopp’s Quality Commitment Statement

To meet or exceed customer requirements and enhance customer satisfaction through continual improvement.


Groschopp’s Company Values

Groschopp’s people are it’s most valuable resource. Those that are part of the organization provide an image and working environment which reflect the organization’s core values:

  1. Respect
  2. Teamwork
  3. Trust
  4. Integrity



How to use the Motor Search Tool

Narrow your search by selecting motor type, gearbox, voltage, and phase options for your desired motor.

Select a dominant variable: choose one of the three parameters to narrow your search. The selected variable determines which slider bar you will be able to manually move.

Use the slider corresponding to your dominant variable to further narrow your motor selection. The other sliders will automatically move to show available ranges based on the range of your selected variable.

Results will upload as your search criteria changes. If you have any questions regarding your results or how to use the search tool, you can chat with us using the green tab on the left-hand side of your screen.

Note: Groschopp Universal motors are custom built to fit your application so no additional options are available to narrow the search. Selecting the Universal motor type will prompt a message taking you to the Universal product page.

Not sure what you need?

One of our team members would be happy to help. Contact us at 800-829-4135 or by email at sales@groschopp.com. You can also chat with us using the green tab on the left side of your screen.

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Universal Motors

Groschopp Universal motors are custom built to fit your application so no additional options are available to narrow the search. Standard frame sizes and motor features can be found on the Universal page.

go to Universal page