Norma GBS - Heavy Duty Trunnion Clamps

Size (mm)

Heavy-duty clamps for multiple applications
NORMACLAMP® GBS is designed primarily for use in applications where hose clamps must meet stringent requirements. In particular if suction and pressure hoses - complete with plastic or steel inserts and high shore hardness values - are to be connected and attached. They are particularly suitable for use on commercial and special vehicles. NORMACLAMP® GBS clamps’ ability to withstand exceptionally high levels of band tensile force is an outstanding feature. They are also extremely easy to install, whether you’re using manual, pneumatic or electrical standard tools.

Material Corrosion Resistance in Salt Spray Testing

W4 - Full Stainless Steel - Minimum 240hours

W2 - Stainless and MS - Minimum 72 hours


• Failure torques improved by a factor of two
• Band tensile force levels improved by a factor of three


• Machine building
• Chemical industry
• Irrigation systems
• Ship manufacturing
• Railway industry
• Agricultural machines
• Building machines
• Engine manufacturing
• Pump and filter
• Mining Industry


Norma Clamp

1. Bolt
– New specially designed bolt with integrated spacer and improved performance. 
2. Reinforced band loops
– ability to withstand much higher torques
3. Mechanically locked closure
– no welding spots and no contact corrosion
4. Bridge
– hose protection
5. Robust band with rounded edges
– prevents injuries and damage to hoses
6. Hollow trunnions
– reduces the tensile forces on the bolt and the mechanical lock