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Norma heavy duty hose clamps > Overview



  NormaCLAMP® GBS
Heavy duty clamps to DIN 3017
NormaCLAMP® GBS are particularly suited for sealing suction and pressure lines with plastic or steel reinforcements and high shore hardness. Their distinguishing feature is the extremely high band tensile force. The assembly of NormaCLAMP® GBS is easily completed by means of either manual, pneumatic or electric standard tools.
 
Short description of technical features

(1) W1/W2/W3
New specially designed bolt with integrated spacer
= improved efficiency, cannot get lost.
W5
Hexagonal socket screw.

(2) Reinforced loops
= allow to withstand significantly higher torques.

(3) Mechanically locked closure
= no welding points, no contact corrosion

(4) Bridge = optimal hose protection

(5) Robust band with rounded edges
= protection againts injuries and damage to the hose surface

 
NormaCLAMP® GBS Multipart version
The 2-part version of NormaCLAMP® GBS is an additional clamp type in this range
 
Technical features
Band tensile forces
The results of numerous test sequences proved that NormaCLAMP® GBS are superior to comparable products
 
Band width (mm) Material thickness (mm)
W1 W2 W4 W5 M SW
18 0.8 0.6 0.6 0.6 6 8
20 1.0 0.8 0.8 0.8 7 10
25 1.0 1.0 1.0 1.0 8 13
30 1.3 1.0 1.0 1.0 10 17
 
Torques
NormaCLAMP® GBS
Band width (mm) Fracture torques (min.) Recommended tightening torque
W1 W2 W4 W5
18 15 Nm 15 Nm 15 Nm 15 Nm 8 Nm
20 25 Nm 20 Nm 20 Nm 20 Nm 10 Nm
25 35 Nm 30 Nm 30 Nm 30 Nm 20 Nm
30 50 Nm 45 Nm 45 Nm 45 Nm 25 Nm
 
NormaCLAMP® GBS QRC
Band width (mm) Fracture torques (min.) Recommended tightening torque
W1 W2
18 10 Nm 10 Nm 8 Nm
20 15 Nm 15 Nm 10 Nm
25 25 Nm 25 Nm 20 Nm
30 40 Nm 40 Nm 25 Nm
 
Corrosion Resistance
Material Corrosion resistance in salt spray testing
W1 Min. 72 h
W2 Min. 72 h
W4 Min. 240 h
W5 Min. 400 h
 

Applications
The NormaCLAMP® GBS are specially suitable for use on commercial and special vehicles. Sealing and retaining suction and pressure hoses with steel or plastic reinforcements and high shore hardness.

The advantages at a glance : twofold improved failure torque, and threefold improved band tensile forces.