The range of KLINGELNBERG heavy-duty gear finishing machine series begins with the HELIX 400 (for spur as well as helical gears). Since they were first introduced in 1995, these machines have been constantly upgraded. The well-proven features were permanently improved, new modules, functions and software options were added. Over a period of 10 years almost 400 of these machines have been shipped to customers around the world. Gear manufacturers in the aviation and commercial vehicle industry as well as gear grinding companies hold the HELIX in high regard as an indestructible, flexible, and expandable basic machine for continuous operation - and as an investment with a very fast return.