What is the name of the extension that projects from the main body of the crane for stability?

The term that refers to the extension projecting from the main body of the crane for stability is "outrigger." Outriggers are critical components that enhance the crane's stability by providing additional support during operation. They extend from the sides of the crane's base, effectively increasing the crane's footprint and counteracting the forces that act on it, especially when lifting heavy loads.

This stability is essential to prevent tipping and ensure safe operations, particularly when the crane is positioned on uneven ground or when it is lifting loads that may cause it to become unbalanced. In contrast, while the boom, counterweight, and stabilizer also play important roles in crane operation, they do not serve the same primary function of enhancing stability through horizontal extension from the crane’s body.