Abstract
As for the resarch of the arc tooth gear, formerly, a lot of research was done. However, it is several kinds that are only practicalized. For example, it is the Novkov gear of former USSR, Circarc gear in the United Kingdom and then Logix gear in Japan and so on. The arc tooth gear of the authors is a point symmetrical arctooth gear to the pace point, having the tooth end arc and a tooth origin arc to one tooth. In this repot, it report on the performance of this symmetrical arc tooth with gear.
