Chuck Structure - Bison 2500 Instruction Manual

3. cHUck strUctUre

The power chuck consists of a high alloy steel body where the pneumatic cylinder connected with a drawbar
and three master jaws is mounted. The jaws are adapted for mounting of special hard top jaws. The jaw serration
is equal to 3/32'' x 90°. Plain back mounting with clamping from the front. Power supply of the chuck through
a fixed pressure distributor attached on the adapter plate side.
The double-acting pneumatic cylinder use the force of the air pressure, moving the drawbar connected with jaws.
The axial force of the drawbar is transferred to the jaws through the two-angle wedge system. The compressed
air pressure is transmitted through a safety control distrubutor (mounted on the adapter plate side). A non-return
valve maintains a constant pressure flow in the piston chamber in case of supply pressure drop.
chuck structure type 2500
h
A
B
B
A
g
C
V
M
A-A
N
jaw stroke
12
control device
max 5
min 0
E
H
U
O
B
air pressure
10
control device
B-B
20
T
3/32''x90
S
Fig. 1
5