To provide a grip chip capable of being easily mounted and demounted and firmly supporting irregular components in a gripper used in packaging the irregular components having the shapes different from each other on a printed circuit board by a surface packaging machine.

This surface packaging machine including a holder 110 connected to a socket shaft in being mounted inside of a socket part, is composed of a piston 120 mounted inside of a through hole 110a formed on the holder, and moved up and down by the air flowing in and out through the through hole, a moving part 130 connected to a fixed block 111 of the holder by a connecting means in a state it is mutually adjacent to an inner inclined face of an inclining member 121 formed on a lower face of the piston, and its interval is widened and narrowed in accompany with the up and down of the piston, and plural grip chips 140 respectively mounted on moving blocks 131 of the moving part through fixing members for supporting the irregular components at least on its three points.