First of all, let's understand the suction of the vacuum sucker, the suction of the vacuum sucker is mainly achieved through the vacuum pump or vacuum generator, then how to calculate the size of our suction? 1) Horizontal lifting? The lifting force is calculated according to the vacuum pressure. F = 0.1×A×PF: theoretical lifting force (N) A: adsorption area of the sucker (cm2) P: vacuum pressure (-kPa) 2) When vertical lifting, the adsorption force of the vacuum pressure and the friction of the adsorption surface of the adsorb and the sucker is the force to maintain the object (adsorption force) F = μ×0.1×A×PF: theoretical lifting force (N) μ : Friction coefficient A: adsorption area of the sucker (cm2) P: vacuum pressure (-kPa) Friction varies greatly according to the adsorption, the material of the sucker, the roughness of the surface of the adsorption, etc. It is recommended to pass the experimental test in actual use. Static friction f=F Action and reaction force Dynamic friction f= μFn The factors of dynamic friction are determined by the properties of the two objects themselves. Fn positive pressure is the force perpendicular to f F= friction coefficient X pressure straight to the contact surface sliding friction formula f=uN where N is the pressure, when the ground is horizontal N=mgu is the sliding friction factor, related to the material. Suction =S * P / μWhere: S is the suction cup area, with cm2 representing P as the air pressure, with kg/cm2 representing μ as the safety factor >=2.5 Italy Vodaik vacuum suction cup in the vacuum degree -750mbar, the diameter of the vacuum suction cup is ∮80mm, the positive suction generated by the whole vacuum cup is 12.56KG. The calculation conditions are as follows: the vacuum degree is -750mbar, equal to 0.75kg/cm2. The above is the basic calculation formula, can be a single suction, if you are a large surface, large weight object, you can choose the right combination, assemble into a set of suction cup system! Then let's talk about how to choose the selection of vacuum suction cups, vacuum suction cups are currently divided into sponge suction cups, rubber suction cups, etc., if the material of the adsorption object is different, we will give you to choose different categories of vacuum suction cups to match! Welcome to consult our engineers online to comprehensively solve your problems!