Lach Diamond

LACH Diamond Inc. is a globally recognized manufacturer of high-performance diamond and CBN tooling solutions, serving the machining industry with precision and reliability. Founded in 1982 by Horst Lach, the company operates as a family-owned business with its U.S. headquarters and production facility based in Grand Rapids, Michigan. In partnership with its German counterpart, LACH DIAMANT—established in 1922—the company delivers expertly engineered tools manufactured in both the United States and Germany, supporting customers across a wide range of industries worldwide.

At the core of LACH’s success is a deep commitment to engineering innovation and continuous improvement. Their technical development team works closely with clients to refine standard tooling and create highly specialized solutions tailored to unique production challenges. Over the years, LACH has earned a reputation for pioneering advancements in diamond and CBN tooling, backed by multiple patents that have helped redefine performance standards in modern machining environments.

Diamond and cubic boron nitride (CBN) tools are utilized in applications where traditional carbide tooling reaches its limits. These ultrahard materials offer significantly extended tool life, exceptional precision, and consistently high-quality results—even when machining extremely hard or abrasive materials such as high-alloy steels, ceramics, and composite materials like CFRP and GRP. With the ability to process hundreds of thousands of workpieces with minimal wear, LACH Diamond tools play a critical role in improving efficiency, reducing downtime, and elevating overall production performance.