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Which construction of wire rope do I need?

Posted by Miami Stainless on 22-Sep-2020 10:18:00

Wire Rope consists of multiple strands of wire, twisted together, sometimes compressed, to form a flexible mechanism for supporting, rigging, lifting or hoisting.

Wire rope is available in various types and constructions, each having specific uses. Different configurations of the wire and construction will provide different benefits for the specific lifting application, including:

  • Strength
  • Flexibility
  • Abrasion resistance
  • Crushing resistance
  • Fatigue resistance
  • Corrosion resistance
  • Rotation resistance

Hence it is important to select the wire for the intended applications and the necessary to see what properties are required for the rope to be used correctly. Properties such as breaking strength, flexibility, resistance to bending fatigue, anti-friction, resistance to deformation, non-rotation and anti-corrosion.

Our aim is to provide you with the knowledge and understanding of the components so that you select the correct wire rope for your chosen application.

Components of Wire Rope drawing

Wire Rope Construction

Wire

Wires are the basic building blocks of a wire rope. They lay around a “centre” in a specified pattern in one or more layers to form a strand. 

Strands

The strands are spiral laid together around a centre, typically some type of core, to form a wire rope.  Properties like fatigue resistance and resistance to abrasion are directly affected by the design of strands.

1 x 19 Standard Wire Construction

wire-rope-stainless-1X19

7 x 7 Standard Wire Construction wire-rope-stainless-7X7
7 x 19 Standard Wire Construction wire-rope-stainless-7X19
1 x 7 Compacted Wire Construction compacted-wire-rope-1x7
1 x 19 Compacted Wire Construction compacted-wire-rope-1x19

Wire Rope Strength

A rope that has strands made up of a few large wires will be more abrasion resistant and less fatigue resistant than a rope of the same size made up of strands with many smaller wires.  Compacted wires are rigid non flexible wires with high strength

Wire Rope Flexibility

 Like the 7x7, it has a high cycle life but a lower breaking strength.

7x7 cable is known for its flexibility and high cycle life. 7x19: In a 7x19 cable, six 1x19 strands are wrapped around a 1x19 centre. 

 

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Topics: Wire Balustrade, Design, Shade Sail

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