An idea of Direct Gear Design is not new. Ancient engineers successfully used it centuries ago. They used desired gear performance and known operating conditions to define gear geometry. Then they made gear drives to this geometry using available materials, technology and tools.

It is important to note: the gear geometry was defined first. In other words: gear parameters were primary and the manufacturing process and tool parameters were secondary. This is an essence of Direct Gear Design.

Modern Direct Gear Design is developed for involute gears and based on the Theory of Generalized Parameters created by Prof. E.B. Vulgakov.

Direct Gear Design^® is an application driven gear drive development process with primary emphasis on performance maximization and cost efficiency without concern for any predefined tooling parameters.