Choker Rating and Down-Rating: Understanding Alloy Chain Sling Capacity in Choker Hitches

The choker rating for an alloy chain sling in a choker hitch can vary depending on the specific sling and its configuration. Generally, the choker rating is lower than the vertical or basket ratings of the chain sling due to the increased stress and potential for slippage in a choker hitch.

As for the percentage of capacity rating that is down-rated, it is common for industry standards to recommend down-rating the capacity of a chain sling in a choker hitch to 80% of its vertical or basket rating. This down-rating is a safety precaution to account for the increased stress concentration and potential slippage that can occur in the choker hitch configuration.

However, it's important to note that specific regulations, standards, or manufacturer specifications may vary. It is crucial to consult the relevant industry guidelines, manufacturer's instructions, or applicable standards to determine the accurate choker rating and down-rating percentage for a particular alloy chain sling in a choker hitch. Following the recommended guidelines ensures safe and proper use of the equipment in lifting and rigging operations.