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Payload, vacuum and air flow
The lifting capacity (payload) of the VG10 depends primarily on the following
parameters:
• Suction area
• Vacuum
• Air flow
These three parameters are explained in the following subsections.
Suction area
The higher suction area, the higher lifting capacity. Be aware that the actual suction
area is smaller than the outer diameter of your vacuum cups, as the vacuum cup libs
forms around the workpiece, the actual suction area is reduced (see figure 3.4).
With a typical vacuum of 60% and one vacuum cup with a 200 mm
2
suction area, the
lifting force is:
With this force per vacuum cup, to lift 10 kg and accelerate with 2g’s, this many
vacuum cups are needed:
16 vacuum cups
It is often a good idea to use more vacuum cups than needed, to accommodate for
vibrations, leaks and other unexpected conditions. However, the more vacuum cups,
the more air leakage (air flow) is expected and the more air is moved in a grip resulting
in longer gripping times.
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