RPM History

Founded in 1969, RPM is a privately held, full service belt fabrication and power transmission firm in Grand Rapids, Michigan.  In 2013, RPM joined forces with Weimer Bearing & Transmission Inc./Northern Industrial Supply, and now has 17 stocking locations in the upper Midwest, along with national distribution centers in Indianapolis and Reno. Each location is a full service, stocking warehouse. RPM offers on-site belt fabrication and 24/7 emergency assistance, full machining capabilities, engineering and design support, along with a customer-focused, long term approach to every relationship.