A Vacuum Gripper Suction Cup is often used on industry robot arm in manufacture. And we also add a small one on uArm.
The Vacuum Gripper Suction Cup is controlled by a small Vacuum Pump and a Solenoid Valve.
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We made the first load test of the robot arm by using the Vacuum Gripper Suction Cup. It can lift a 330ml Coca Cola and move it to another place. More applications and test videos with the Vacuum Gripper Suction Cup will be updated soon.
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See the video here: http://www.youtube.com/watch?v=x6pJqdSk29Y