Shackles are an essential component in any lifting operation, as they are responsible for connecting and securing chains, lifting slings or ropes to the load. Using shackles can ensure the load is evenly distributed to promote smooth and controlled movements of the load.
However, just as there are various lifting equipment that can be used, there are also many different types of shackles to consider.
Choosing the right shackles is important for safety and efficiency, as shackles offer varying strengths and usable suitabilities.
In terms of choosing shackles to be used in conjunction with workstation cranes and jib cranes, here are the key options you need to know.
Bow Shackles
The bow shackle (sometimes referred to as an anchor shackle) gets its name from its shape, which looks like an O-shaped bow. This section of the shackle forms a large loop which ropes or slings can be pulled through.
The shape of a bow shackle also allows multiple sling-legs to be connected. This ensures the loads can come from multiple directions, including if the load shifts during moving or lifting.
Bow shackles are commonly used within rigging as they offer a convenient way of securing chains and straps. However, they can also connect to workstation cranes or jib cranes when handling different types of loads.
Dee Shackles
Dee shackles (or D shackles) have a shank which is in the shape of a letter D.
A dee shackle is narrow which restricts the load or sling movement to a single axis. This makes it suited for linear lifting operations where load flexibility isn’t required. Instead, dee shackles offer precise lifting for heavy loads, including when using workstation or jib cranes where simple vertical lifting is required.
Dee shackles are typically made from steel, including alloy steel, galvanised steel or stainless steel. This choice of materials allows the user to customise the shackle to the environmental conditions that the shackle will be exposed to.
Screw Pin Shackles
Screw pin shackles have a pin that screws into the body of the shackle. This connection type allows for ease of installation and removal, which can make screw pin shackles ideal for lifting jobs where there are frequent load changes.
For instance, in assembly lines where workstation cranes are used, the shackles may need to be swapped regularly. Screw pin shackles may offer the best solution depending on the load type.
Wide Body Shackles
As the name suggests, wide-body shackles have a wider body compared with standard shackle types. This wider space also provides a greater surface area for the sling attachment.
When using a jib crane, a wide-body shackle may prove suitable if the load is large or irregularly shaped, including if the load requires more attachment points.
Using a wide body shackle can reduce sling wear and create a better distribution of the load due to the increased contact area provided.
Increase Lifting Capacity For Your Operations With Material Handling Solutions From Metreel
Keen to learn more about workstation cranes and jib cranes, including the types of lifting accessories to use?
Discover our vast range of material handling equipment and accessories here at Metreel. Head over to our Jib Cranes page to view our cranes in greater detail, and learn how they can improve safety and productivity in your workplace.
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