Chain slings

Chain slings are used for moving loads with lifting equipment. The wide application of these lifting elements is due to a number of advantages. The technical characteristics of different product types vary, and this is taken into account when choosing a sling.

What are chain slings

A lifting device of this type is a high-strength chain whose links are joined by welding. This technology prevents the link from opening spontaneously under load. A distinctive feature of these products is their high flexibility, which allows securing objects of complex configuration.

Links and end fittings are located at the ends: a hook, a clamp, or another attachment. In some cases, universal slings without additional fittings are used. Product dimensions are selected separately, taking into account operating parameters.

Types of chain slings

By configuration, lifting devices are divided into several categories. This is taken into account when choosing a sling. Types of elements:

1. 1SC. A single-leg element whose end links are fitted with mounting hooks, clamps, etc.
2. 2SC. A two-leg element. Used for loading and unloading objects with two attachment points: beams, posts, pipes.
3. 3SC. A three-leg element. Three chains connected via a master link. Used for moving loads with three mounting brackets.
4. 4SC. A four-leg element (spider). Used for loading and unloading objects with multiple attachment points. The simultaneous use of 4 chains ensures even weight distribution.
5. USC. The ends of the part are connected to each other. The connecting part is made in a detachable or non-detachable version.

The type of chain sling is selected based on the application. This eliminates the risk of premature failure of the lifting device.

Where chain slings are used

Thanks to their high flexibility and wide temperature range, chain slings are in demand in various fields: mechanical engineering, construction, mining, metallurgy. Chain slings are often used when laying pipelines.

Advantages of lifting devices

Chains for slings are manufactured in accordance with RD 11-07-2007. The standard provides for the following advantages of the parts:

1. High flexibility. Objects of complex configuration can be secured — the links have a large rotation radius relative to one another.
2. Repairability. If a defect appears, the failed link can be replaced, and the sling can also be lengthened.
3. Strength. Chains are made of high-strength steel, which allows transporting loads of various weights.
4. Resistance to aggressive substances. Lifting devices of this type can be used in acidic and alkaline environments.
5. Wide temperature range. Chain slings can be used to move objects with high temperature.

Another advantage is that link deformation occurs gradually, which allows failed elements to be timely rejected. For this reason, links are regularly inspected for damage during operation. Elements with a changed shape must be replaced.

When choosing a chain sling, attention is paid to its technical characteristics — this allows safely transporting objects and avoiding premature link damage.

Sling designation	Chain size, mm	Load capacity at a 45° inclination angle, t
2SC-1.6	6	1.6
2SC-2.12	7	2.12
2SC-2.8	8	2.8
2SC-4.5	10	4.5
2SC-7.5	13	7.5
2SC-11.2	16	11.2
2SC-15	20	15
2SC-21.2	22	21.2
2SC-30	26	30
2SC-45	32	45

Sling designation	Chain size, mm	Load capacity, t
1SC-1.12	6	1.12
1SC-1.5	7	1.5
1SC-2.0	8	2
1SC-3.15	10	3.15
1SC-5.3	13	5.3
1SC-8.0	16	8.0
1SC-12.5	20	12.5
1SC-15	22	15
1SC-21.2	26	21.2
1SC-31.5	32	31.5

Sling designation	Chain size, mm	Load capacity at a 45° inclination angle, t
3SC-2.36	6	2.36
3SC-3.15	7	3.15
3SC-4.25	8	4.25
3SC-6.7	10	6.7
3SC-11.2	13	11.2
3SC-17	16	17
3SC-26.5	20	26.5
3SC-31.5	22	31.5
3SC-45	26	45
3SC-67	32	67