The rope diameter should always be checked before installation. Measure a straight part of the rope. Two parts with minimum distance of one meter should be measured. At every point two measurements should be done, with an angle of 90 degrees displacement in relation to each other. The average between the two measurements should be according to the tolerance detailed in the tables below.

Steel wire ropes for general applications

Nominal
rope Ø

Tolerance of nominal diameter
on unloaded rope

mm %
2 to <4 0 +8
4 to <6 0 +7
6 to <8 0 +6
≥8 0 +5

 

Nominal
rope Ø

The difference between two measurements expressed as the percent from nominal diameter for unloaded rope
 

Rope with strands that are exclusively of wire

Ropes with strands that incorporate fibre centres

mm max % max %
2 līdz <4 +7 -
4 līdz <6 +6 +8
6 līdz <8 +5 +7
≥8 +4 +6
Steel wire ropes for person elevators​​​​​​​

Nominal
rope Ø

Tolerance for nominal diameter for ropes with fibre core/synthetic core Tolerance for nominal diameter for ropes with steel core
Unloaded Loaded to 5% of min breaking load Loaded to 10% of min breaking load Unloaded Loaded to 5% of min breaking load Loaded to 10% of min breaking load
mm max% min % min % max % min % max %
≤10 +6 +1 0 +3 0 -1
>10 +5 +1 0 +2 0 -1

 

Nominal
rope Ø
Difference between two measurements expressed as percentage of nominal diameter under a load equivalent to 5% or 10% of min breaking load
  Rope ovality Average diameter variation
mm max % max %
<8 +4 +3
≥8 +3 +2
Right
Wrong