Clamping arm, standard
No. 6959C-xx-30
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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 |
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|
| 325019 | 6959C-16 | 1,2 | 3,1 | 2,0 | 5,0 | 3,2 | 1,4 | 2,0 | 0,9 | 3,6 | 350 |
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| 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 |
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| 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.
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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