Chain sling

The WLL of wire rope and chain slings vary with the number of legs and the angle of the legs in operation. 

Table 19.2 shows the working load limits for a variety of chain slings whose links are made from 10 mm diameter material and operating at various angles. 

Hgures 19.12. (a) Three-leg wire rope sling (b) Two-leg chain sling... 

For lifting items such as steel drums and pipes, chain slings can be fitted with special hooks. Figure 19.18 shows pipe hooks, which are used in pairs. 

Are all lifting accessories clearly marked with the safe working load (SWL), in good condition and free from visual defects, e.g. frayed nylon, webbing and wire ropes corrosion (particularly at wire termination) damaged/distorted shackles, eye bolts, wire ropes and chain slings ... 

JD van Zyl from Shutterlock for the calculations and design of 37.81,32 mm x 2 Legged Max Alloy Chain Sling, c/w 3 Oblongs. 

TABLE 15-8 Rated Load for Grade 80 Alloy Steel Chain Slings (Vertical and Bridle Hitches)... 

Chains prepared for slinging purposes are in the form of 2, 3, or 4 legged chain slings each with its own hook and connected at the other end to one... 

Table 27.1. Maximum safe working loads for alloy steel chain slings. (Courtesy Parsons Chain Compay)... 

These Regulations apply to all equipment used for lifting on construction sites and include fixed, mobile and travelling cranes, hoists used for both goods and passengers and also the ropes, chains, slings, etc. that support the load being lifted. 

Employers must not use allow steel-chain slings with loads in excess of the rated capacities (i.e., working load limits) indicated on the sling by permanently affixed and legible identification markings prescribed by the manufacturer. 

Power shovels, excavators, wheel loaders, backhoes, loader backhoes, track loaders. This machinery is also excluded when used with chains, slings or other rigging to lift suspended loads. 

Alloy steel chain slings must not be loaded beyond working load limit — 1926.251 (b)(4) — Aug. 4, 2000... 

A. Section 1926.251(a)(2) states that rigging equipment shall not be loaded in excess of its recommended safe working load, as prescribed in Tables H-1 through H-20... (also, 1926.251 (b)(4) states that the rated capacity for alloy steel chain slings shall conform to the values in Table H-1). Table H-1 prescribes rated capacities (working load limits) for alloy steel chain only. Therefore, the standard mandates that only alloy steel chain be used, and that such chain meet the Table H-1 rated capacities. 

Master link or gathering ring— A forged or welded steel link used to support all members (legs) of an alloy steel chain sling or wire rope sling. 

Reach—The effective length of an alloy steel chain sling measured from the top bearing surface of the upper terminal component to the bottom bearing surface of the lower terminal component. 

Alloy steel chain slings must have permanently affixed, durable identification stating size, grade, rated capacity, and reach. 

A thorough periodic inspection of alloy steel chain slings in use must be made on a regular basis (at least once every 12 months). 

A record must be maintained of the most recent month in which each alloy steel chain sling was thoroughly inspected. 

Alloy steel chains slings must be permanently removed from service if they are heated above 1000°F. 

Worn or damaged alloy steel chain slings and attachments must be taken out of service until repaired. 

DIN 695, Grade 2 Chain Slings With Flook or Ring Type Terminal Fittings, 1986. 

Do not use lifting devices that transfer part of the load to the cylinder itself (e.g., rope, chain, sling) support cylinder on cradle. 

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