Basic vacuum suction cup usage rules |
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The lower the pressure inside the suction cup, the higher the handling force of the cup. Force = p (negative pressure) x A (surface area)
The economical negative pressure worked with in most industrial handling applications is between 50% and 60% If a vacuum (negative pressure) is too high, the cups will wear out more quickly and energy consumption will be very much higher. If the vacuum is increased from 60% to 90%, the holding force will be 50% higher - but the energy use to obtain that extra force will be 10 times higher. It is better to choose a larger vacuum suction cup than to increase the vacuum level. A lower % vacuum in a larger suction cup is more quickly obtained and allows more rapid working conditions than a smaller cup with a higher vacuum. Working and climatic conditions can influence the handling efficiency of suction cups. For that reason the security factor is an integral part of each technical data sheet for all suction cups. |