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For anyone in the industry, some of your most useful and frequently used tools are the slings that allow you to safely and efficiently complete your projects. Most of us have a basic understanding as to how each type of sling is constructed, but few know the real ins-and-outs of what gives a sling its strength and the amount of work behind its construction. At Lifting Gear, we go through great lengths to understand the driving force behind each piece of equipment in our fleet so we can ensure the safest and most reliable gear makes it onto our customer’s job sites.
I’d like to pass along some insight into what makes these slings, from their construction to the maintenance and inspections that keeps them safe but, at the same time, don’t want to make your eyes bleed. That said, today, we’ll cover wire rope and we’ll cover the other sling types in future installments.
So we all know wire rope derives its strength from the strands of wire that are twisted around a core cable, right? You may ask what else is there to know about their construction beyond that. Well, frankly, a lot.
Our rental fleet has sizes of wire rope ranging from 3/4” up to 4” in diameter for single part slings and 2-1/2″ to 11″ diameter in our 9-part braided slings, but there are larger varieties available for purchase. Each wire rope sling is made up of several strands, which is then twisted in a helix around a central strand that is often the same composition as the outer strands. A wire rope strand is typically made up of anywhere between 19 and 36 wires but can reach as high as 109 wires, which are then twisted around a core wire or strand, depending on the configuration of wire rope.
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