AMF
X

Link clamp

double-acting
max. operating pressure 250 bar,
min. operating pressure 25 bar.

Order
no.
Article no. Clamping force F1 at 100 bar*
[kN]
Clamping force F1 at 250 bar*
[kN]
Piston force F5
at 100 bar
[kN]
Piston force F5 at 250 bar
[kN]
Vol. Sp
[cm³]
Vol. Lo
[cm³]
eff. piston
area Sp
[cm²]
eff. piston
area Lo
[cm²]
Md max.
[Nm]
Weight
[g]
CAD SC
325563 6959C-12 0,7 1,7 1,1 2,8 1,7 0,9 1,1 0,6 2,4 188
325019 6959C-16 1,2 3,1 2,0 5,0 3,2 1,4 2,0 0,9 3,6 350
324905 6959C-20 1,9 4,9 3,1 7,8 6,0 2,6 3,1 1,4 10,0 590
324657 6959C-25 3,2 8,0 4,9 12,2 10,3 3,7 4,9 1,8 21,0 1155
325589 6959C-32 5,2 12,9 8,0 20,1 21,7 9,5 8,0 3,5 43,0 2125

Sp = clamp, Lo = unclamp
* Clamping force when using standard clamping lever

Design:

Hydraulic cylinder as a drop-in cartridge. Top mounting with four cylinder screws (resistance min. 10.9), these are included in the supply scope. All components from hardened, tempered and burnished steel. Piston rod and hinge pins from hardened steel, tempered and nitrided. Additional bronze wiper for piston rod protection.
Supply scope includes hinge pins and tension plates, but not clamping levers. Oil supply via oil channel in fixture body.

Application:

The double-acting link clamp is highly suited to clamping in clamping pockets.

Features:

Small dimensions. Allows close side-by-side positioning. Clamping levers easy to change with link clamps mounted. The clamping lever centre axis and the pressure point on the workpiece are always in one plane at (Z). This prevents relative movement on the workpiece. The integrated cartridge is stepped. This prevents the radial O-rings from becoming damaged as they are installed in or removed from the cross channels.

Note:

With standard levers, the ratio of B to C is 1 to 1.5.
In preparing the blank lever, deviations that cause a higher clamping force F1 are permitted only in exceptional cases.

  • dimensions table
    Order
    no.
    Article no. A A1 B C dia. D
    E dia. F H H1 H2 H3 H4 H5 H6 H7 H8 K L M N P R dia. Q S S1 V W Z OR-1
    O-ring
    Order No.
    OR-2
    O-ring
    Order No.
    325563 6959C-12 60,0° 3,0 13,5 22 20 21,0 17 10,0 58,9 33 41,5 34,0 5,5 18 3,5 11,5 16 37,5 15,0 6,0 10 12,0 4,6 42 28 18 29 4 409953 339572
    325019 6959C-16 61,0° 5,6 16,5 26 25 26,5 23 12,0 75,2 43 55,0 41,5 7,5 24 4,0 12,0 20 45,0 16,0 9,5 12 14,0 5,6 48 32 22 32 4 407148 409664
    324905 6959C-20 60,8° 5,5 19,5 31 30 30,5 28 14,5 84,8 47 60,0 50,0 9,0 26 7,0 16,5 27 51,5 21,0 9,5 15 16,0 6,5 56 38 28 42 5 321570 490342
    324657 6959C-25 54,3° 1,0 24,0 37 38 37,5 35 16,0 106,4 61 76,0 52,5 11,5 34 5,0 17,0 34 65,0 30,5 7,0 20 20,5 8,5 72 46 34 54 5 321018 492728
    325589 6959C-32 53,9° 4,2 30,0 45 47 47,5 45 16,0 131,0 75 92,0 62,5 11,5 44 13,0 17,3 42 82,0 38,5 9,0 24 25,5 10,5 87 56 40 65 5 321190 321190

    Order
    no.
    Article no. dia. D H7 dia. F H7 G x T H9 H10 H11 H12 J M R V W dia. X
    X1 dia. Y Y1
    325563 6959C-12 20 17 M4x12 25 34,0 10 14 2,5 15,0 12,0 18 29 4 11,0-12 6 28-31
    325019 6959C-16 25 23 M5x10 25 41,5 10 14 2,5 16,0 14,0 22 32 4 11,5-12 6 27-38
    324905 6959C-20 30 28 M6x13 36 50,0 14 20 3,3 21,0 16,0 28 42 4 15,0-18 6 38-47
    324657 6959C-25 38 35 M8x16 38 52,5 14 20 2,5 30,5 20,5 34 54 4 13,0-18 6 39-49
    325589 6959C-32 47 45 M10x22 46,5 62,5 15 21 2,5 38,5 25,5 40 65 4 13,0-19 6 48-59