抄録
We had already analyzed the mechanical loss factor of the geared motor, which is composed of a motor of rated power 90W and a parallel gear reducer with total reduction ratio 9 and 18 Gear mesh was lubricated with the grease of NLGI consistency class 2. The high factor of loss was grease at no loading, and the friction of tooth flank at loading. In this paper, we presumed the mean friction of coefficient of tooth from the friction loss torque of tooth flank by experimental analysis and Niemann's formula. The result shows that mean friction of coefficient of tooth was a steady value of 0.12, which is independent of load torque and rotational speed.
