In most flexible handling cables, we use an anti-torsion braid. The anti-torsion braid consist of synthetic threads with a very high tensile strength. It is embedded between inner and outer sheath to prevent twisting, loops, push off the outer sheath and “corkscrew-effects”.
Torsional stresses is caused by different conditions:
- Changes of direction into different planes
- Non aligned guide pulley
- Sloping cable guide into the deflection pulley
- High dynamic stress
- High tensile load of the cable
Criterias to build up a heavy duty reinforcement:
- A good chemical bonding between synthetic threads and sheath compound
- Braid angle
- Braid coverage percentage
- Material of reinforcement
- Shear resistance of the reinforcement element
