PROBLEM TO BE SOLVED: To provide a vibration isolator capable of improving heat radiation performance, assemblability, and maintainability while securing sufficient vibration absorption performance, and suppressing increase in the size and the weight.SOLUTION: A vibration isolator includes: a clutch drum 10 rotatable around an axis line O1 a relative rotation part 13 that can rotate relatively around the axis line O1 with respect to the clutch drum 10 a bearing part that supports the relative rotation part 13 rotatably around the axis line O1 and an elastic member 14 for transmitting the rotation of the clutch drum 10 to the relative rotation part 13. The elastic member 14 is disposed outside the clutch drum 10 and on the outer peripheral side with respect to the bearing part.COPYRIGHT: (C)2015,JPO&INPIT