Slings come equipped with eye ends, and are marked with their load rating. Made from either polyester or nylon, slings are available in a variety of configurations, including choker, basket, double-leg and quad-leg. While chain, rope and wire rope can be used to create any type of hitch, chains are heavy, subject to rusting, and can cause damage to the materials.ДЇor most crane lift slings, webbing is the material of choice, as itвЂ™s relatively lightweight, inexpensive, and it wonвЂ™t dig in to loads like lumber. Variations on the single choker hitch include the double choker hitch, and the double wrap choker hitch both provide greater contact area to better secure the load, increase control during movement, and prevent slippage from the sling. Choker hitches cannot be used for loose bundles of materials, and the weight of the load should be kept below 75% of the total rated capacity of the sling. With this style of hitch, a webbing strap/sling is generally used itвЂ™s important to use a sling that is long enough to ensure that the load is snugged tightly throughout the lift. One eye of the hitch is passed over the other. Choker Hitch: When a choker hitch is used, the sling tightens as the load is lifted because there is a single attachment point (eye), helping to guard against load loss.This type of hitch can be used as either a single, double or double-wrap configuration and basket hitches cannot be used with loads that are difficult to balance. Basket Hitch: A basket hitch cradles the load by attaching both eyes of the sling separately to the overhead cable, preventing added tension to the load.This style of hitch is rarely used for crane work, as the load tends to rotate upon lifting, making it tough to control large, heavy loads at height. Straight (Vertical) Hitch: The straight, or vertical, hitch uses a single piece of webbing or chain one eye is connected to the overhead cable, while the other eye clips to a piece of webbing or other attachment point on the material.Which type of hitch is used depends on the size and weight of the load, as well as the distance the load needs to be lifted. ThereвЂ™s three basic types of hitches used with a crane lift: straight (vertical) choker and basket. On every job site, the crane operator needs to carefully assess each load, and determine the right combination of hitches and sling configurations required to ensure the load can be moved without shifting or slipping. Lifting and rigging using a mobile crane requires a lot of skill, training and experience combined with a healthy dose of respect for the possible dangers involved when moving materials using a sling and hitch.Д«efore the crane operator can begin moving a load, the materials need to first be secured and stabilized using specialized chokers, hitches, and slings, and itвЂ™s not a one-size-fits-all solution. Ever wonder how just a few pieces of fabric and rope connected to a crane can hoist massive loads of metal, roof-mounted HVAC units, or skids filled with lumber?

Crane lift basket