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| Wire Rope Slings - The most common and lowest |
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cost per ton of lift of all slings, wire rope slings are known for their strength, ability to bend without distortion, and to withstand abrasive wear and abuse. A single leg wire rope sling can be used in a number of different hitches. They are used in the construction industry and other industries where a variety |
| of heavy loads and rugged conditions exist. Sling fittings can usually be inspected and reused, reducing replacement costs. |
| Misuse or abuse of wire rope will cause a wire rope sling to become unsafe long before any other factor. |
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| Synthetic Web and Round Slings - Both web |
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slings and round slings are a good choice where highly finished parts or delicate equipment must be protected from damage. Their stretch and flexibility help them mold to the shape of the load, gripping securely, while cushioning and absorbing shock far better than wire rope or chain. They are lightweight and very easy to handle. |
| Synthetic slings are unaffected by |
grease, oil, moisture and certain chemicals. Nylon is used where alkaline conditions exist. Polyester is used where acids or bleaching agents are present. Polyester slings are also recommended where headroom is limited since they stretch 3% less than nylon web slings (7% vs 10% at the working load limit). They are non-sparking, non conductive and can be used safely in explosive atmospheres.
Consult our customer service department before using synthetic slings in a chemical environment. |
| Synthetic slings are susceptible to cuts, punctures and abrasion damage, as well as damage from temperatures above 200°F. They should be protected from sharp edges, sharp projections and heat sources such as steam pipes, open flame and welding splatter. |
| Web slings are generally made from either polyester or more economical nylon flat woven webbing. Web slings can be fabricated with extremely wide load bearing surfaces (up to 48"), yet will still be easy to handle. |
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| Kinking, crushing, or severe abrasion can cause structural damage and loss of strength. Wire rope slings should be padded where they bend over sharp edges. This will help prevent fatigue damage caused by bending around too small a radius. |
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| For high capacity lifts, consider using a braided wire rope sling. These slings are made of many small diameter wire ropes braided together to form one large sling. |
| Braided slings have great flexibility and are almost impossible to kink. |
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| Chain Slings - Only alloy steel grades 6, 8 and 10, |
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and some stainless steel chain slings are approved for overhead lifting. They are well suited to high-temperature atmospheres and rugged loads that would abrade or destroy other types of slings. Due to their superior strength and durability, chain slings are typically used in foundries, steel mills, and heavy machine shops which require repetitive lifts, often under harsh |
| conditions. They can be inspected, repaired, proof tested and recertified. |
| Alloy chain slings can be heated to temperatures up to 1000°F. When they are consistently exposed to service temperatures in excess of 400°F, the working load limits must be reduced in accordance with the manufacturer's recommendations. |
| Chain slings can have one to four legs connected to a master link and can be fabricated with adjustable reach. Multi-leg slings can be quicker and easier to rig than single leg slings. A four legged chain sling has the same rating as a three legged sling due to the difficulty in evenly balancing the load among all four-legs. |
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| Round slings are constructed of a continuous loop of polyester enclosed in a double layer woven |
| jacket. Normal cover damage does not affect the sling strength. The jacket protects the load bearing core of the sling from abrasion, dirt and ultraviolet degradation. Wear points can be moved around to extend sling life. Round slings are extremely flexible with limited stretch. They can be endless, eye-and-eye, and braided for high capacity lifts. |
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| Metal Mesh Slings: Wire and Chain - These |
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slings excel in lifting objects that are hot or have sharp edges, such as bar stock or plate steel. They grip the load firmly, resist corroding, stretching, kinking or tangling, and can withstand temperatures up to 550°F. Mesh slings enhance load balancing due to their ability to conform to irregular shapes and their wide load bearing surface. |
| Each sling is proof tested, certified, and |
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stamped with its capacity and serial number. They can be repaired, tested and recertified for service. Machine shops and steel warehouses typically use mesh slings.
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