Suction Cups

Suction cups are elastomeric components that create a vacuum seal when pressed against a surface, enabling material handling systems to grip objects without mechanical clamps. They convert pneumatic vacuum pressure into holding force, commonly used in robotic end-effectors, pick-and-place systems, and automated assembly lines. Their performance depends on cup geometry, material properties, surface compatibility, and vacuum system integrity.

Suction cups operate on the Bernoulli principle and vacuum adhesion. When pressed against an object, they form an airtight seal, and a vacuum pump evacuates air from the cavity, creating negative pressure (typically -0.6 to -0.9 bar). Atmospheric pressure exerts force on the object's surface, generating holding force (F = P × A, where P is pressure differential and A is effective sealing area). Release occurs by breaking the vacuum through positive air pressure or mechanical detachment.