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Work support, block version, self-locking – 400 bar AVBC
Double-acting - block version
Locking force at 400 bar: 18 and 40 kN
Support that holds workpieces in order to prevent deformation and vibrations during machining. Pneumatic control of the two positions, retracted and extended.
The self-locking support allows the following applications:
• palletised clamping
• clamping with no oil supply to the machine.
• automatic locking for safe clamping in the event of a pressure drop
• treated steel components
• rod treated to prevent seizing and corrosion
• body with anti-corrosion treatment
Supplied with plugs and O-rings
Operation
Contact force limited by spring
Rod retracted in idle position
Clamping: supply through port A
When oil is supplied through the port A the rod [1] extends till it makes contact with the workpiece, through the spring [2].
When the piston [3] reaches the extreme position, the sloping part of the radial piston [4] locks the rod [1]
The rod remains blocked when there is no pressure.
Release: supply through port B
When oil is supplied through port B the radial piston [4] releases the rod [1].
The piston [3] and the rod [1] retract.
Assembly
Two supply possibilities
Locking force diagram
| Maximum pressure | Locking force | Rod
ød |
Travel | Supply | Contact force | Min. recommended pressure | Displaced volume
A B |
Max flow rate | Elastic collapse at 500 bar | Weight | Type | Reference |
| bar | kN | mm | mm | N | bar | cm3 | cm3/s | µm/kN | kg | |||
| 400 | 15 | 25 | 12 | G1/4’’ | 28 to 42 | 100 | 5 | 25 | 1.5 | 3.5 | AVBC 25-12 | 772005/000 |
| 5.2 | ||||||||||||
| 400 | 40 | 40 | 20 | G1/4’’ | 52 to 99 | 100 | 13.3 | 25 | 1 | 15.5 | AVBC 40-20 | 772006/000 |
| 14.5 |
| Type | ||||||||||||||||||||||||||||
| a
|
b
|
b1
|
c
|
e
|
e1
|
f
|
f1
|
g1
|
h
|
h1
|
i
|
i1
|
k
|
k1
|
L
|
m
|
n
|
o
|
p
|
q
|
r
|
s
|
t
at 45° |
t1
at 45° |
u
|
v
|
w
|
|
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | |
| AVBC 25-12 | 85 | 63 | 18 | 94,5 | 25,5 | 25,5 | 27 | 24,5 | 41 | 29 | 36 | 18 | 48 | 10 | 13,5 | 106,5 | 46 | 12 | 57 | 58 | 37,5 | 35 | 12 | 15 | 4 | 11 | 6,5 | 6,5 |
| AVBC 40-20 | 140 | 105 | 36 | 147 | 44 | 44 | 44 | 49 | 65 | 20 | 44 | 35 | 80 | 15 | 15 | 163,5 | 80 | 16 | 95 | 88 | 58,5 | 60 | 15 | 22 | 4 | 18 | 10,5 | 10,5 |
