Elevator ropes
Machines with the latest technology in the production process
Quality
- Constant diameter of large lengths
- Competent personnel with long-standing experience
- modern machinery
Inspection
- Full inspection of the evenness of the diameter and the homogeneity of the material and struc-ture
- Specially developed inspection system
- Company standard exceeding the requirements of international norms
Tolerances of Rope Diameter
The tolerances of elevator-rope diameters have to be much smaller than for other ropes. The reason for this smaller tolerances is to ensure the exact interfit between the rope and the sheave groove to obtain enough traction but also to achieve best durability of rope and sheave.
The diameter tolerances of DRAKO elevator ropes are equal to or smaller than those of the new European Standard EN-12385-5, especially, the international norm ISO 4344.
The observation of an exact rope diameter has a considerable influence on the service life of an elevator rope. A set of ropes is to be taken from the same production length.
