CATALOGUE release 8.8

275 / 1278

Products designed for industrial applications.
General terms and conditions for sale are available on
1
Series CGSN 180° angular grippers MOVEMENT > CATALOGUE > Release 8.8
/7.12.03 1
MOVEMENT
The choice of the most suitable gripper has to be carried out
according to the weight of the object that has to be moved. It is
suggested that the selected model develops a gripping force at
least 20 times higher than the weight of the object. In case of
great acceleration or impact during the moving of the object, it
is necessary to supply a wider margin.
EXAMPLE OF CALCULATION (see the diagram on the right)
Weight of the object to be moved (Kg) = 0.06
Coefficient of safety = 20
Gripping moment L (mm) = 30
Working pressure (MPa) = 0.5
F = gripping force
Fmin [min. required gripping force ] = 0,06kg x 20 x 9.8m/s² =
12N (minimum).
Through the diagrams “Effective Gripping force” we deduce
from the above mentioned conditions that the gripping force
with the mod. CGSN-16 is 16N, that is 26 times the weight of
the object.
The condition requiring that grip force is at least 20 times
higher than the set gripping force is thus satisfied.
DRAWING LEGEND:
L = Gripping moment (mm)
F = Finger push (N)
EFFECTIVE GRIPPING FORCE (F)
The shown gripping force corresponds to the gripping force of
a finger when all fingers (or accessories) are in contact with the
load.
Criteria to choose the most suitable size: 1) GRIPPING FORCE ANALYSIS
LEGEND:
H = Gripping arm (mm)
P = Pressure (MPa)
The load has to be maintained within the distance field from the
gripper barycentre (H) for a certain set pressure.
If the load is outside the recommended field for a certain
pressure, the product durability can be compromised.
Criteria to choose the most suitable size: 2) GRIPPING MOMENT ANALYSIS