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HEAVY DUTY CLAMPS

IHCT

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Construction
Special bolt design has the spacer integrated - no more lost bolts Reinforced loops allow significantly higher tightening torques Mechanically locked closure eliminates welds and their associated contact corrosion Optimal hose protection through the float
Terminology Used
The tightening torque describes the recommended torque that is applied in order to tighten a hose clamp. It is largely defined in the DIN 3017 Standard and is measured by means of a torque wrench. However, better clamp designs incorporate design features that best convert the tightening torque into band tension, and so increase the tightness of a joint. Measurement of band tension (which is not covered in the Standard) provides the best objective measurement of clamping performance. Pirtek clamping systems are manufactured in Germany by Norma®, who routinely conduct band tension measurements as part of their design and manufacturing processes. Fracture torque indicates what tightening torque will result in destruction of a clamp, and provides a guide to the overall robustness of a clamp. Field servicing of mobile equipment in the absence of torque wrenches often results in manually applied tightening torques that exceed recommended tightening torques. Quoted test torques are generally 30% above recommended tightening torques, and represent the maximum value at which no permanent damage to a clamp will occur through over-tightening. No-load torque defines the torque needed to turn the screw without generating any clamping force. Low no-load torques with negligible deviations typify clamps that will perform well during assembly.
Material
Steel
Application
  • Pirtek heavy duty clamps are particularly designed for sealing suction and pressure hoses that incorporate plastic or steel reinforcements and high Shore hardness values
  • Bands can withstand extremely high tensile forces
  • Suited to assembly using manual, pneumatic or electric tools
  • Especially suited for use on commercial, automotive and industrial mobile equipment