Choker Hitch Capacity: Understanding Choke Angle and Sling Leg Capacity

When it comes to lifting operations, the choker hitch is a commonly used method to secure loads using slings. However, it's important to consider the angle of choke and its impact on the capacity of the choker hitch. A choker hitch typically has 75% of the capacity of a single leg sling, but this percentage can vary depending on the angle of choke.

The angle of choke refers to the angle at which the sling is wrapped around the load. It plays a crucial role in determining the capacity of the choker hitch. Let's explore how the angle of choke affects the capacity of the choker hitch:

1. Choke Angle of 120 Degrees or Greater:
   

   • When the angle of choke is 120 degrees or greater, the choker hitch is considered to have 75% of the capacity of a single leg sling.

   • This means that the choker hitch can handle a load that is 75% of what a single leg sling with the same diameter and construction would be able to lift.

   • The 75% capacity is a general guideline used in the industry, but it's crucial to consult manufacturer specifications and industry standards for specific applications.

1. Choke Angle Less Than 120 Degrees:
   

   • If the angle of choke is less than 120 degrees, the capacity of the choker hitch decreases.

   • At angles less than 120 degrees, the choker hitch can have a capacity as low as 40% of the capacity of the sling leg.

   • This means that the load that can be safely lifted using the choker hitch is significantly reduced.

It's important to note that the capacity percentages mentioned above are general guidelines and can vary based on factors such as sling construction, material, and manufacturer recommendations. Rigging professionals should always refer to the manufacturer's specifications and industry guidelines to accurately determine the choker hitch capacity for specific lifting applications.

Furthermore, it is crucial to conduct regular inspections of slings and rigging hardware to ensure their integrity. Any signs of wear, damage, or degradation should be promptly addressed, and damaged equipment should be removed from service.

In conclusion, understanding the relationship between the choke angle and the capacity of the choker hitch is essential for safe and effective lifting operations. By considering the angle of choke and adhering to manufacturer recommendations, rigging professionals can ensure the proper utilization of the choker hitch and maintain a safe working environment.