PURPOSE: To grasp a part in a desired posture, and to load it in a specific posture, by providing a supporter to support rotatable around an axis square to the axis of a hand shaft as the center, a link mechanism to convert the reciprocating motion of a rod into a rotating operation of a part holding means, and the like, to a part holding means.

CONSTITUTION: In a robot hand 1 connected to a hand shaft with a flange coupling 10, an air cylinder 3 is held to the flange coupling 10 through a damper 2, and a part adsorption nozzle 5 is held to a supporter 4 extending from the air cylinder 3, rotatable around an axis square to the axis of the hand shaft as the center. The tip of the rod 31 of the air cylinder 3, and the adsorption nozzle 5 are connected with a connecting plate 54 which can convert the reciprocating motion of the rod 31 to the rotating operation of the adsorption nozzle 5. Furthermore, a stopper 46 to regulate the stroke of the rod 31, and to set the inclination angle by the rotation of the adsorption nozzle 5 at a specific angle is provided, and when the grasped part is transferred, the rod 31 is pulled in, and the adsorption center of the adsorption nozzle 5 is made coinside on the axial line of the hand shaft.