VIBRATION MEASURING DEVICE FOR COMPANION FLANGE OF DIFFERENTIAL CARRIER ASSEMBLY

PROBLEM TO BE SOLVED: To provide a vibration measuring device for a companion flange that can measure total vibration corresponding to a point where many kinds of mating members easily vibrate from the companion flange by one vibration measuring device. SOLUTION: The vibration measuring device for a companion flange 21 comprises an end face vibrating sensor 7 that detects vibration in a plane direction of the companion flange 21, and a vibration sensor 8 for a spigot joint part that detects vibration in a circumferential direction on the same radius as the companion flange 21, which passes through a point that this sensor 7 detects. A vibration component in the circumferential direction at a point (h) that the paired member (d) easily vibrates is determined from a detected value by the end face vibrating sensor 7 based on a diameter dimension of the companion flange 21 and a distance between an end face of the companion flange 21 and the point (h) where the paired member (d) easily to vibrate, and then quantity of the total vibration is measured by adding a detected value by the vibration sensor 8 for the centering location to the vibration component 8.