Company History

Founded by a Magnet Pioneer

In 1950, Leo Weinstein founded Adams Magnetic Products in Chicago. A pioneer in permanent magnet fabrication, Weinstein set the standard for designing and manufacturing innovative magnetic products and assemblies. More than 50 years later, Weinstein's round base and channel magnet assemblies remain a part of Adams' product line.


Throughout the 1960s and '70s, Adams complemented its expertise in engineering and manufacturing magnetic assemblies with an investment in flexible magnetic sheets and strips.

A Strong Magnet Supplier for the 21st Century

Established in 1950, Adams Magnetic Products Co. sets the standard for designing and manufacturing innovative magnetic products and assemblies. One of the oldest U.S. companies in the industry, its staff draws from a depth of engineering, fabricating, coating, testing, sourcing, handling, and distributing expertise managing inventory and delivery to coincide with customers' production cycles and schedules. Adams stocks a large variety and quantity of the most popular magnetic products and has the capabilities to produce magnets of virtually any shape and size.

In the 1980s, Adams began a period of growth under the new leadership of W.F. Lewis and Richard M. Knowles. The product line expanded to include the fabrication of Alnico and rare earth magnets, as well as complex custom-engineered assemblies.

Adams entered the soft ferrite market in the early 1990s by purchasing the distribution divisions of MMG North America. Distribution contracts developed with Philips (now Ferroxcube), Siemens (now Epcos), and others. Much of today's miniaturized digital electronics can be attributed to the high-performance functionality of ferrite magnetic products.

In the late 1990's, Adams Engineered Products division opened in Kentucky. We fabricate a full range of magnetic materials in this state-of-the-art facility.

Prior to 2000, the industry began a dramatic transition in response to increased competition spurred by accessible, global material suppliers. Adams maintained its leadership and broadened its offering with the purchase of Magnetic Attractions (in 1999), a promotional magnet manufacturer in North Carolina.

The company began the new century with new leadership, as Scott Lewis carried on the legacy established by Weinstein and continued by W.F. Lewis and Knowles.

Responding to customers' needs, Adams expanded its soft ferrite product offering in 2003 to include Arnold (now Micrometals-Arnold) powder cores. The following year, Adams' entered the retail market with the purchase of Dowling Magnets, a magnetic toy and educational product company based in Sonoma, California.

In 2007, Adams added material sourcing and service capabilities through a dedicated office in Beijing, China. That same year, Adams launched DIGITALABEL, specializing in quality, personalized magnetic labels.

In 2009, Adams acquired Rainbow Magnetics, Inc., and relocated them from Santa Ana, California to a new 20,000 square-foot facility in Irvine, CA. Rainbow, known for its customized, magnetic, direct marketing programs merged with Magnetic Attractions to create one-stop shopping for any magnetic, direct mail or promotional products.

Adams’ Elizabethtown, KY facility achieved ISO 9001:2008 certification in 2012. The corporation is committed to delivering outstanding value to its customers at every opportunity.