If you’re planning your next overhead lifting project, you may be required to specify the type of sling and rigging equipment you plan on using. Understanding how to determine and use the best sling type is essential, as well as selecting the correct type of rigging hardware that will connect to that sling. The right type of lifting hook that you’ll need for your project will be determined by several factors, like the total weight of the load and the type of sling used.
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This article will cover the different lifting hook types that are available to use for your overhead lifting projects.
There are two main ways a lifting or sling hook can be attached to the sling: using a hook with an eye at the top or a clevis at the top to make your connection to the sling. Other types of hooks exist that have a bearing or bushing at the top that swivels. We’ll explain the three different hook types in further detail below.
These types of hooks feature a chain or fittings that are welded for a permanent connection to the sling. Eye hooks offer more flexibility in terms of movement to position the hook and attach it to a load. However, an eye hook is a permanent solution. If the throat of the hook becomes damaged during use, the whole sling will have to be failed and removed from service.
There are two different types of swivel hooks: positioning swivel hooks and true swivel hooks with bearing.
A clevis hook may come with or without a snap lock and has a clevis and bolt or pin at the base. The clevis is a U-shaped piece featuring holes at the end of prongs to accept the clevis pin, which is similar to a bolt but only partially threaded.
This type of clevis hook can easily be removed or replaced if it’s damaged, bent, or cracked. It would not require the entire chain sling to be scrapped if damaged.
Clevis hooks can also pivot side to side for positioning when connecting to a load. However, it lacks the same flexibility and freedom of movement that eye hooks offer.
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