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LeClaire Manufacturing has been in business since 1966 as a family-owned and -operated sand and permanent mold aluminum casting supplier. In addition to aluminum castings, we offer value-added services such as engineering and tool building, heat treating, core making, real-time x-raying, impregnating, anodizing, machining, and painting. As our equipment, technology, and processes continue to grow, we see endless possibilities in the future of aluminum casting solutions.

LeClaire Manufacturing is just the latest chapter in the remarkable history of the Zimmerman family. Metals have been the foundation of our family business dating back to the 1890s. That is when Wm. C. F. Zimmerman introduced the Mighty Monarch Stump Puller — a grey iron casting. Growth was rapid and in 1915, the family built a new “modern” steel foundry in Bettendorf, Iowa. Immediately, the Zimmerman Steel Casting Co. began building a reputation for high-quality castings.

The U.S. government acknowledged our reputation as preparations were being made for entry into World War II. The Zimmerman Steel Casting Co. became a major defense contractor and winner of the prestigious “E” Award for outstanding contributions to the World War II manufacturing efforts. Although the family sold the Bettendorf foundry after the war, Robert Zimmerman, who had just completed engineering school at Iowa State University, continued our metals tradition by introducing aluminum to the family business. He purchased LeClaire Manufacturing in 1966, and the company has been growing ever since. Today, we supply high-quality aluminum castings to customers worldwide.

We specialize in Sand Casting, Permanent Mold Casting, Machining, Tool & Dye Manufacturing, and Prototyping. We serve numerous industries including Agriculture, Recreational Vehicles, Heavy Truck, Marine, Railroad, Valves & Pumps, Military & Defense, Engine Components, and more. Our team is here to help you. We look forward to serving you for your next casting or machining project. Contact us today for a free quote. 

JOIN US @ THE ASSEMBLY Show BOOTH #1846 | OCT 26-28 | Donald E. Stephens Center | Rosemont, IL