Global Leader in
Curvic® Couplings

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. Anmark supports major aerospace, defense, and industrial OEMs and Tier 1 suppliers across the world.

Established in 1978, Anmark is a full-service precision machining facility with major OEM approvals. As an AS9100 and Nadcap certified supplier, Anmark is focused on superior quality, on-time delivery, and customer service. From Tooling and Gages to Production Hardware, Anmark is the recognized leader in Curvic® grinding.


“As a planner, I have been very satisfied with Anmark in every category. They always deliver a quality product, and are always courteous and responsive anytime I’ve needed answers or requested extra machine time. I wish all of the vendors I have dealt with were as good.”

Purchasing Manager
UTC Aerospace Systems