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. 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 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.

Curvic grinding is a highly specialized, unique grinding technique used to create couplings that require extreme accuracy and maximum power transfer. Curvic couplings resemble face gears, but the teeth are curved in both the radial and axial directions. Concave and convex Curvic couplings mate together, creating intricate interlocking assemblies that can withstand high powered operating environments. A superior level of engineering expertise along with unique machinery are required to support the generation of Curvic couplings. Anmark has manufactured Curvic couplings for nearly 30 years and is a leader in the technique.

“It's a pleasure to do business with Anmark. I rarely rate suppliers so highly, but every single person that I have had direct contact with has been very helpful and is always friendly.”

UTC Aerospace Systems