Anmark is the global leader in the manufacturing, engineering, testing and repair of Curvic couplings. We specialize in the Curvic grinding of engine, APU and transmission couplings and dynamic balancing of rotating engine components. In addition to these services, Anmark offers engineering support, turning, milling and precision grinding on customer-supplied product as well as the complete manufacture of product according to design requirements.Established in 1978, Anmark is a full-service precision machining facility with major OEM approvals. We support major aerospace, defense, and industrial OEMs and Tier 1 suppliers across the world. As an AS9100 and Nadcap certified supplier, Anmark is focused on superior quality, on-time delivery, and customer service. Anmark is also an FAA Part 145 and EASA certified repair station and can help with your MRO needs. From Tooling and Gages to Production Parts, Anmark is the recognized leader in Curvic grinding.