Crane ropes for lifting of loads in accordance with their technical specifications and conditions of use. This also includes compliance with the manufacturer’s instructions for first use, operation, maintenance and testing.
Any other use, especially exceeding the specified lifting capacity and operation or assembly by untrained persons is deemed improper.
Selection of running wire ropes. The selected wire rope must be strong enough. Applicable directives, standards and regulations must be observed. Certex recommends selection in accordance with ISO 4308-1 “Cranes and Lifting appliances – Selection of wire rope”. Other, local regulations and manufacturers’ information may also need to be taken into account. Apart from the strength of ropes, various wire rope types and designs have different properties which offer many additional criteria for selection. The selection of a wire rope implies examining the positive and negative properties of the different designs for each application in order to find the most suitable rope. A specialist may find a discarded wire rope very useful in this respect. We will gladly assist you in finding the optimal rope for your application.
The following information is not binding and does not substitute the applicable standards, directives and regulations.
A rope selection factor (C) must be found to select a rope of adequate strength pursuant to ISO 4308-1 for a specific purpose within a group of mechanisms.
C=√ Zp/K’ xRo
C = Rope selection factor
K’ = Minimum breaking load factor (see ISO 2408)
Ro = Minimum tensile strength of the wire used in the rope
Zp = Minimum coefficient of utilisation (see table)