OUTLINE OF SYSTEMS C-7
4.5
Relationship between Jaw Height and Allowable Cylinder Thrust
(1) Do not use the chuck at a force exceeding the allowable cylinder thrust. If you do, the service
life of the chuck will be shortened and accidents will occur due to fatigue of component parts.
(2) If high jaws are used, use the chuck at a lower cylinder thrust. A large force is applied to the
jaw mounting bolts and master jaws, causing damage, wear, and seizure.
Example) Kitagawa hollow chuck
The values given above are reference only.
For the relationship between the jaw height and the allowable cylinder thrust for the chuck
actually used, refer to the instruction manual supplied by the chuck manufacturer.
WARNING
Make sure that the jaw nut for mounting a soft jaw to chuck does not
project beyond the master jaw.
If the chuck is rotated while a jaw nut projects beyond the master jaw, the
jaw nut and/or master jaw will be damaged.
This condition also leads to inaccurate machining.
B-212
B-210
B-208
B-206
58.8
39.2
19.6
0
20
40
60
80
100
Height of the Jaw (mm (inch))
A
llowable Cy
linder
T
h
rus
t (k
N (lbf
))
NOTE
Jaw nut
Jaw
