AMF
X

Toggle joint clamp, hydraulic

double acting,
max. operating pressure 250 bar.

Order
no.
Article no. Clamping force*
F1=F3
[kN]
Clamping force*
F2=F5
[kN]
Clamping force*
F5
[kN]
p max.
[bar]
pD max. **
[bar]
Cylinder stroke
[mm]
Piston area A1
[cm²]
Piston ring-
surface A2
[cm²]
Oil capacity forward
[cm²]
Oil capacity backward
[cm²]
Weight
[g]
CAD SC
66647 6960C-4 6 9 3 100 250 80 3,14 2,0 25 15 5400
66654 6960C-6 12 18 5 100 250 90 4,90 2,9 44 26 9600
66662 6960C-8 18 27 8 100 250 120 8,00 4,9 96 59 18900

* at p max. or pD max.
** pD = pressure during differential switching

Design:

Hardened steel, burnished, with hydraulic cylinder mounted ready for connection to standard double circuit (see circuit Fig. 1) or differential circuit (see circuit Fig. 2). Oil supply via threaded port.

Application:

The clamp is particularly suitable for use in transfer and special-purpose machines. Any thrust pieces can be attached to the sturdy holding arm. With the differential circuit (see Fig. 2 below) the differential piston area A2 of the cylinder is directly connected to P of the pressure generator, while the full piston area is connected by a 3/2-way seat valve.

Features:

The clamp, of machine quality, is maintenance-free thanks to its tempered and ground shafts which run in Teflon bearings. As a result of the hydraulic cylinder operation the possible clamping force is the same as the permissible holding force. The large aperture enables unhindered workpiece handling.

Note:

Please urgently observe the maximum pressure values in the table above.

  • dimensions table
    Order
    no.
    Article no. Piston
    dia.
    [mm]
    Piston
    rod dia.
    [mm]
    A B C dia. D
    E F G H K L M N dia. O P R S T U V W X Y Z
    66647 6960C-4 20 12 15 122 52 11 54 20 70 57 10,0 77,0 90 109 6,2 65 G1/4 38 30 8 27 308,0 415,0 47,0 197
    66654 6960C-6 25 16 20 147 55 11 60 21 83 61 11,0 85,0 105 129 8,2 81 G1/4 41 40 12 26 353,0 466,5 52,5 216
    66662 6960C-8 32 20 30 196 80 13 95 22 111 86 12,5 112,5 136 176 13,2 94 G1/4 46 60 18 40 423,5 576,0 69,5 309