It is very important to know load distribution on the line of contact and tooth root stresses of the spiral bevel gear. However, there are few studies hitherto which deal with these problems. Under present day situation, the analysis of tooth root stresses of the Oerlikon type spiral bevel gear was chosen as one of the subjects of our studies. That is to say, by using three dimensional finite element method, distribusion of tooth root stresses of the spiral bevel gear was examined. And consequently, it Was found that the computed results agree well with those by equation of W. Coleman and application of this equation for compution of tooth root stresses of the Oerlikon type spiral bevel gear is effective.
