What are the opening hours?

Monday 7am - 4:30pm Tuesday 7am - 4:30pm Wednesday 7am - 4:30pm Thursday 7am - 4:30pm Friday 7am - 4:30pm

Groschopp Inc

USA Manufacturer of fractional horsepower electric motors and gearmotors for original equipment manu

Since our founding over seventy years ago, we have come to be trusted by our customers for more than just motors. We are proud to have earned the business of world-class OEMs, and today they rely on us as a critical link in their supply chain for comprehensive services and solutions. We have become a critical partner in their achievement of their business goals.

09/03/2026

Meet the People Behind the Build at Groschopp

Get to know Paige from our Production Department!
• Favorite part of my job: The people I work with.
• Things I enjoy outside of work: Spending time with my grandkids and going out with my friends.

09/01/2026

Groschopp has changed in a lot of ways over the years.

From the products we make to the equipment we use and the people who have worked here, a lot has changed. But one thing that has always stayed a high priority is our employees and the relationships we have with our customers.

08/27/2026

Meet the People Behind the Build at Groschopp

Get to know Tim from our Tool and Die Department!
• Favorite part of my job: Helping people and figuring out problems.
• Things I enjoy outside of work: Love going to concerts, camping, and golfing.

08/25/2026

Built for Strength and Reliability

A manufacturer came to Groschopp looking for a compact motor solution to automate heavy prison doors weighing between 200 and 1,200 lbs.

Some challenges included:
• High torque for smooth operation
• Tight installation space
• Back-drivability for manual operation during power outages
• Reliable performance

Groschopp developed a brushed DC motor paired with a 5:1 right-angle gearbox to meet the torque requirements while fitting within the tight space. The solution was tested through 1.6 million cycles to ensure reliable performance.

Learn more: https://www.groschopp.com/case-study/tough-jobs-case-study-automated-doors/

08/20/2026

Meet the People Behind the Build at Groschopp

Get to know Noah from our Drafting Department!
• Favorite part of my job: Designing custom motors
• Things I enjoy outside of work: Working on my trucks, hunting, and spending time with my family.

08/18/2026

What Causes Electric Motor Efficiency Losses?

A motor uses electrical energy to produce mechanical power, but some energy is lost during operation. Understanding these losses can help explain what affects a motor’s overall efficiency.

Some common sources of efficiency loss:
- Friction Losses: Caused by resistance from parts like bearings, bushings, and brushes.
- Windage Losses: Caused by air resistance and turbulence as the motor rotates.
- Iron Losses: Losses in the motor’s magnetic core, including hysteresis and eddy current losses.
- Ohmic Losses: Caused by current flowing through the resistance of the motor’s conductors.
- Stray Losses: Other losses that do not fit into the main categories above.

These losses cannot be completely eliminated, but knowing where they come from can help when looking at motor efficiency and overall performance.

Learn more: https://www.groschopp.com/efficiency-and-losses-in-electric-motors/

08/13/2026

Meet the People Behind the Build at Groschopp

Get to know Gail from our Maintenance Department!
• Favorite part of my job: Walking
• Things I enjoy outside of work: Going on walks and birdwatching!

08/11/2026

AC Planetary Gearmotors

Our AC planetary gearmotors are a good fit for applications that need high torque and reliable inline speed reduction. With a wide range of gear ratios, they can handle different speed and torque requirements across commercial and industrial equipment.

Features:
• 1/20–3/4 HP
• 115 & 230 VAC
• 1.3–700 RPM
• 5:1–1000:1 gear ratios

Learn more: https://www.groschopp.com/motors/ac-gear-motor/ac-planetary-gearmotors/

08/06/2026

Meet the People Behind the Build at Groschopp

Get to know Betty from our Machining Department!
• Favorite part of my job: The people I work with!
• Things I enjoy outside of work: Relaxing

08/04/2026

Celebrating 20 Years at Groschopp!

Last week, we had the opportunity to celebrate John’s retirement after 20 years at Groschopp.

We appreciate the hard work and dedication he brought to his role as a lab tech. Congratulations on your retirement, John!

Address

Sioux Center, IA

Opening Hours

Monday	7am - 4:30pm
Tuesday	7am - 4:30pm
Wednesday	7am - 4:30pm
Thursday	7am - 4:30pm
Friday	7am - 4:30pm

Telephone

+17127224135

Website

http://www.groschopp.com/

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