Semco Motion Products / Larsen Mfg.                        +1 801-876-2111 

About Us

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Semco Motion Products / Larsen Mfg 

The company Semco Revolving Units (SRU) began building machines to turn signs back in the early 1960’s. They incorporated simple and robust machine designs that proved to be very dependable. SRU was located in Salt Lake City until 1980.

In 1980 Richard Larsen, longtime manager for SRU purchased Semco and continued the tradition of building dependable sign rotators. The number of industries they serve continues to grow each year. SRU Inc also does business as Semco Motion Products.

Shawn Larsen transitioned to manager of operations in 2017. The company continues to develop new products of both rotating and non-rotating machines. We manufacture all sizes of rotational devices for signs and displays. We also fabricate products for special projects that our customers to meet immediate needs. Some of these fabricated products then become integrated in our manufacturing process to meet customer demand.

Shawn began machining as a teenager at Semco and later spent 10 years in aerospace (fastener) manufacturing for Cherry Textron, and then 6 years in the construction industry specializing in motorized and regular access equipment. This experience of lean manufacturing and construction has led to many scaffolding and construction equipment fabrication projects.

Semco / Larsen Mfg continues as a family owned business into the next generation. We have expanded into CNC machining and welding services. Our CNC machining is headed up by Rick Larsen who is a long time CNC machinist. Rick has over 40 years machining experience and he oversees sales and production of machining.

Located in Mountain Green, Utah we offer our services world wide. We enjoy working with people in many different industries. We look forward to partnering with you on your unique projects and we are thankful for the opportunity to serve you.

Your next project

If you are working on a sign or display project or are looking for a quality machining and fabrication company. We offer quality work, fast turnaround, and competitive pricing. We look forward to working with you. Please call or email with questions or information on your next project. about-us-headshot-1


Larsen Mfg Semco