SPECIAL STEEL WIRE ROPES LTD.

DIAMETER

 

DIAMETER

The diameter of rope is the diameter of its circumference, circumscribed to its normal section. This diameter is given in millimeters.

1. PRACTICAL DIAMETER OF WIRE ROPE
   The practical diameter of a rope is measured by following an established method, its value must be equal to the value of the nominal diameter (the dimension by which a rope is identified) except for certain allowed tolerances.
2. HOW TO DETERMINE THE PRACTICAL DIAMETER
   Measurements are taken at two points at least one meter apart and two diameters are measured at 90° one from the other. The average of the four values thus obtained is the practical diameter. Usually the practical diameter is taken from a sample of straight rope not subjected to traction. In special cases when the tolerance is less than 5% of the minimum guaranteed breaking strength. The correct diameter is the greatest diameter of the rope or strand.