Page 1241 - Benma | Blue book 5.0

Flat tension clamps, stop components Tel. +41 44 736 63 63 • Fax +41 44 736 63 00 • sales@brw.ch
257600 Low height clamping jaws AMF Bull
No. 6490, hardened, burnished.
Can only be supplied in pairs.
Scope of supply: With attachment screws, groove stones and pin keys.
*These clamping forces are achieved with optimal dimensioning of the screws and use of the
maximum permitted torque. The pull-down force F2 is achieved with a smooth workpiece surface.
Order ID Grooves b c d F1* F2* h l l1 l2
mm mm mm mm kN kN mm mm mm mm
257600.0100 12 40 3 M10 16 0.6 20 80 39 26
257600.0200 14 40 3 M12 22 0.9 20 80 39 26
257600.0300 16 40 3 M12 22 0.9 20 80 39 26
257600.0400 16 50 4 M14 32 1.2 25 100 46 34
257600.0500 18 50 4 M16 36 1.4 25 100 46 34
257600.0600 20 50 4 M16 36 1.4 25 100 46 34
257600.0700 22 78 5 M20 36 1.4 30 140 65 50
257600.0800 24 78 5 M20 36 1.4 30 140 65 50
257600.0900 28 78 5 M24 40 1.6 30 140 65 50
257600.1000 30 78 5 M24 40 1.6 30 140 65 50

257640 Low height clamping jaws AMF Maxi-Bull
No. 6494, basic body of spheroidal graphite iron, clamping jaws tempered steel hardened, bur-
nished.
Only suppliable in pairs.
Appropriate accessories:
260000 T-groove screw AMF compl.
260060 T-groove screw DIN 787 AMF
* Clamping forces F1 and F2 depend on the groove width.
Order ID b1 Grooves b c F1* F2* h h1 h2 l l1
mm mm mm mm kN kN mm mm mm mm mm
257640.0100 13 10 40 3 6 0.2 50 20 30 115 60
12 10 0.4
14 15 0.6
257640.0200 19 16 50 4 20 0.8 60 25 35 150 72
18 28 1.1
20 36 1.4
257640.0300 31 22 80 5 38 1.5 75 30 45 205 102
24
28
30
32
36

257660 Extra strong clamping jaws AMF
No. 6497, for high workpieces. Basic body malleable cast iron, clamping jaws hardened steel,
clamping jaws can be rotated.
*These clamping forces are achieved with optimal dimensioning of the screws and use of the
maximum permitted torque. The pull-down force F2 is achieved with a smooth workpiece surface.
Order ID b1 Grooves b c F1* F2* h h1 h2 l l1
mm mm mm mm kN kN mm mm mm mm mm
257660.0100 19 12 65 8 8 1.2 85 37 99 177.5 112.5
14 15 2.2
16 20 3
18 28 4.2
257660.0200 26 20 75 11 30 4.5 100 45 118 226.5 136.5
22 30 4.5
24 32 4.8
28 32 4.8
30 36 5.4
257660.0300 38 32 90 15 50 7.5 120 55 145 262.5 157.5
36
42

1232 Brütsch/Rüegger Tools Ltd. • Heinrich Stutz-Strasse 20 • P.O. Box • CH-8902 Urdorf • www.brw.ch