A pump draws the vacuum between the suction cup and the part to be lifted and stores this vacuum in a specially designed chamber. By creating a vacuum, the atmospheric pressure in the vacuum cleaner's housing is removed. The product is then pressed against the suction cup by the same atmospheric pressure of 1 kg/cm² (which varies between 950 and 1030 hectopascals); Consequently, a suction cup of 1 m² has a pressure of 10,000 kg, so the suction cup can lift 4,000 kg in accordance with European regulations. This physical phenomenon makes suction cup handling an extremely efficient and reliable technique that can perform a large number of handling operations.