The computational model of friction power loss for spiral bevel gear is established.The influence of pressure angle
mean spiral angle
transverse module
tooth width
input rotate speed and input power on friction power loss of spiral bevel gear and the impact degree of each factor are analyzed by using orthogonal experiment.The results show that mean spiral angle and pressure angle are the most important factors to affect the friction power loss of spiral bevel gear
and the optimum parameters also derived for the lowest friction power loss of spiral bevel gear.