Continental Diamond Tool buys PG&F Superabrasives, teams with Winterthur Technology Group

Continental Diamond Tool has completed its acquisition of PG&F Superabrasives and formed a strategic alliance with Winterthur Technology Group to broaden its grinding and dressing portfolio across North America. The move expands CDT’s U.S. footprint and adds conventional abrasives alongside superabrasive solutions for manufacturers in aerospace, electronics, medical and other high-precision industries.

Why it matters: - The deal makes Continental Diamond Tool one of the largest U.S.-based superabrasives solution providers. - The alliance with Winterthur Technology Group gives CDT a broader conventional bonded abrasives offering for North American customers. - Manufacturers gain a single source for matched grinding wheel and dressing solutions across superabrasive and conventional technologies.

What happened: - Continental Diamond Tool Corp. completed its acquisition of PG&F Superabrasives on November 2, 2026. - PG&F Superabrasives operated in Royersford, Pennsylvania, and Montrose, Colorado. - CDT also formed a strategic alliance with Winterthur Technology Group, a Nimbus portfolio company. - CDT bought PG&F Superabrasives from Nimbus, the Dutch-German investment firm.

The details: - PG&F Superabrasives adds an experienced team with decades of formulation and process expertise. - The Royersford facility adds precision plating and dressing tools, 3D-printed vitrified bond wheels, precision dresser spindles and industrial abrasive compounds. - The Montrose facilities add small-wheel solutions for CNC round tool manufacturing and large-wheel solutions for centerless and double-disc grinding. - CDT now has manufacturing operations in Indiana, Pennsylvania, Colorado and the United Kingdom. - CDT has served precision grinding markets since 1973 with application engineering, proprietary bond and dressing technology and a customer-first approach. - Demand is growing in aerospace and defense, electronics and semiconductors, medical, and advanced ceramics as manufacturers push for tighter tolerance and higher productivity. - CDT President Nick Viggiano said PG&F brings a team with decades of experience. - CDT CEO Brian VanHall said the acquisition and alliance reflect a shared vision to support North American manufacturers. - Winterthur Technology Group CEO Edmar Allitsch said CDT will serve as WTG’s exclusive North American distributor for precision application conventional bonded abrasives. - WTG and CDT plan to cooperate on local finishing and profiling operations for vitrified grinding wheels at CDT. - WTG said the partnership could accelerate innovation, including in 3D-printed superabrasive tools. - Nimbus Senior Partner Henning Andresen said CDT is the right home for the business and its people. - Terms of the transaction were not disclosed.

Between the lines: - The transaction deepens CDT’s U.S. manufacturing footprint without changing the customer-facing structure in the near term. - The WTG alliance suggests CDT wants to pair superabrasives with conventional abrasives under one sales and engineering relationship. - Nimbus exits the business while keeping support for the Royersford and Montrose portfolio outside North America.

What's next: - PG&F Superabrasives will continue to operate under its name as part of CDT. - Customers will keep receiving products and service without interruption. - Customers will have a single point of contact for sales and application engineering. - Customer service will remain in place at each company. - CDT and WTG will continue cooperation on local production, customer support and product innovation.

The bottom line: - CDT is using the acquisition and alliance to scale its North American offering from a superabrasives specialist into a broader grinding and dressing platform.