Heavy Duty Drag Chain with Hook or Ring

Double Half Hitch with Shackle

A double pulley block with a shackle is a pulley system similar to a single pulley block with a shackle, but with the advantage of having two pulleys instead of one. The two pulleys are mounted on the same body or housing of the pulley block, each with a groove or channel for the passage of steel cables or ropes.

Double blocks with shackles are widely used in applications where it is necessary to move or lift heavy objects. They are common in sectors such as construction, logging, and various industrial environments, especially in situations that require changing the direction of the load or a mechanical advantage greater than that offered by a single block with a shackle.

One of the main advantages of the double block with shackle is its ability to multiply the mechanical advantage of the system. By changing the direction of the force twice, the block significantly reduces the effort required to move the load. This is particularly useful when using manual winches or lever hoists.

Double blocks with shackles are available in various sizes and load capacities. It is essential to select the appropriate block for each application. When choosing the block, it is important to consider factors such as the weight of the load, the strength of the steel cable (or rope), and the environmental conditions of use.