Defining wire ropes: cables made up of numerous strands of metal wire twisted or woven into a braid or helix. However, today we will not guide you into them but observe the difference between 1770-grade tensile and 1960-grade tensile ropes. Moreover, we will review their construction and the meaning of numbers.
Here is the 1770-grade wire rope; it is 6×19 construction with a fibre core. In this matter, 6 is the number of strands that make up the rope. Then we have 19 – the number of wires that make up each strand. Finally, we have the core, which, in this case, it is a fibre core.
The 6×36 IWRC Galvanised 1960-grade wire rope would suit all general-purpose applications. The 6×36 construction provides an excellent balance of flexibility and durability. Likewise, the 1960-grade tensile ensures high breaking loads but a remarkable balance of strength and fatigue resistance for the best possible service life. Unlike 1770, the 1960-grade has an Independent Wire Rope Core (IWRC) – a wire rope usually of 6×7 (6/1)/1×7(6/1) construction.
As seen in the diagram above, the wire rope’s main components are the shoes. Each wire is arranged around a central wire to form a 7-wire strand. Six strands are formed around a central core to make the wire rope. The rope’s specification is 6×7 (6/1) with six strands of seven wires. When looking at the outer stands, 36 wires make up each strand, with overall six strands to make up the cable.
Winch Hire Australia only uses wire ropes manufactured under Australian Standard.
Disclaimer: This article serves educational purposes. Please, make sure to consult with a manufacturer/supplier and conduct a job safety analysis before using the equipment. Use it for intended purposes only. Also, it is your responsibility to comply with relevant work health and safety laws.