Industry news

Three types of tension for the hose clamp

1. Free Torque

• Definition: The minimal torque required to rotate the screw when the clamp is unloaded. It reflects internal friction and installation smoothness.

• Typical Value: ≤1.0 N·m

• Significance: A low value ensures easy turning and prevents jamming.

2. Working Torque / Installation Torque

• Definition: The target tightening torque required for proper sealing during normal operation.

• Typical Value:

• Standard: 4.5–8 N·m

• Heavy-Duty: ≥8 N·m

• Significance: Insufficient torque causes leaks; excessive torque damages the screw or band.

3. Breakaway Torque / Ultimate Torque

• Definition: The maximum torque at the failure point (screw stripping or band breaking).

• Typical Value: 10–40+ N·m

• Significance: Indicates ultimate strength. Installation torque must be lower than 75% of this value.