Recently, spiral bevel gears have come to be used widely as transmission gears of cars Running test of gears was a most effective method for rotational vibration measuring of gears. However, the use of acceleration sensor equipped with gears for estimating of rotational vibration was not practical from the viewpoints of cost and production control. In this paper, we discussed a easy method measuring rotational acceleration of Oerlikon spiral bevel gears under various conditions, using acceleration sensor on the output shaft flange. It was shown that this method was effective to estimate behavior of spiral bevel gears under running condition. Additionally, the transfer function between the acceleratoin of the driven gear and that of flange were measured. It was clarified that applicable range of this method can be obtained by the transfer function under static condition.
