A mounting device includes a mounting rail with a base carriage and a distance carriage for replacing a gripper tip of a gripper finger for a robot system. The base carriage includes a first fixing agent for fastening a gripper jaw of the gripper finger and the distance carriage includes a second fixing agent for fastening the gripper tip such that the gripper jaw can be fastened by the first fixing agent to the base carriage and the gripper tip can be fastened by the second fixing agent to the distance carriage. The base carriage and the distance carriage are arranged movably against each other between a locked position and an unlocked position along the longitudinal direction such that the gripper tip is locked at the gripper jaw in the locked position and unlocked from the gripper jaw in the unlocked position.