Vacuum Cups Carrying Capacity
EUROTECH provides wide selection of vacuum cups for different industrial applications. According to DIN EN 13155, the vacuum cups carrying capacity specifies the maximum load that a suction cup can carry under the conditions specified by the manufacturer.
The carrying capacity of suction cups is calculated using the following formulas:
m: Carrying capacity
p: Differential pressure between ambient pres- sure and system pressure (corresponds to the amount of the relative vacuum)
[Pa] = [N/m2] = [kg/m x s2]
A: Effective suction area [m2]
g: Gravitational acceleration
[m/s2]g ≈ 9,81 m/s2
SF: Safety factor (partly dependent on the area of application and on national standards and directives)
μ: Friction coefficient (depends on surface properties, surface pressure, temperature)
The friction coefficients must be considered when calculating vertical carrying capacity. Friction coefficients can be disregarded for horizontal carrying capacities.
A meaningful friction coefficient can only be determined if the general conditions are considered.
The values for the vertical capacity specified in this catalogue always use a friction coefficient of μ = 0.5 and refer to measurements taken on dry glass under lab conditions. The real friction coefficients and the real vertical carrying capacities may differ proportionally from the catalogue data.