Types of slings for lifting

Types of slings for lifting are available in four different types depending on the material. Including chain slings and webbing slings.

Nylon Slings

Most widely used multi-purpose sling

Flexibility of the fabric prevents it from locking up on a load

Strong, easy to handle, and relatively inexpensive

Unaffected by oil and grease

Resilient to aldehydes, ethers, and strong alkalies

Not suitable for use with acids or bleaching agents

Stretches approximately 8-10% at rated capacity

Should not be used in temperatures over 194°F (90°C)

Polyester Slings

Flexibility of the fabric prevents it from locking up on a load

Unaffected by common acids and hot bleaching agents

Not suitable for use around concentrated sulfuric acids or alkaline

Stretch approximately 3-5% at rated capacity

Should not be used in temperatures over 194°F (90°C)

Lightweight polyester material is easy to handle and store when not in use

Wire Rope Slings

Offers high strength and flexibility in a smaller diameter

6x19 class is most widely used due to a good combination of flexibility and wear resistance

6x37 class is used primarily in larger diameter wire rope; large number of strands per wire make it more flexible but lessens resistance to abrasion

7x7x7 class utilize ultra-flexible and corrosion-resistant galvanized aircraft cables

Chain Slings

Strong, durable, flexible; collapses for easy storage

Available in Grade 100 lifting chain

Often used in high temperature or under adverse conditions that would normally destroy or wear other types of slings

Wide variety of hook end fittings available

Price can be substantially higher than the other types

Generally do not stretch at rated capacity (or very minimally), but can stretch 15-20% prior to failure

In order to have a balanced lift, you need to know the following:

Weight of object to be lifted

Center of gravity

Number of attachment points

Hitch type

Geometry of lift including sling angles

Reach

Clearance – any height restrictions

Upper and lower fitting requirements

Ambient conditions