What is the primary use of a grease gun?

A grease gun is specifically designed for delivering lubricant, usually grease or oil, to various machines, tools, and equipment that require periodic lubrication to function effectively. The primary function of this tool is to ensure that moving parts are properly lubricated, which helps to reduce friction, prevent wear and tear, and extend the lifespan of machinery. Keeping equipment well-lubricated is crucial for optimal performance, especially in industrial and mechanical contexts.

This tool operates by forcing grease through a nozzle into the intended lubrication point, making it an essential item for maintenance in many settings, including automotive repair and industrial machinery. Other choices, while they represent different tools with specific uses, do not pertain to the primary function of a grease gun.