Mechanical components are the individual parts that make up machines and mechanical systems. These components work together to perform specific functions, such as moving, supporting, or controlling motion. Common examples include gears, bearings, and levers, each playing a crucial role in how machines operate efficiently. Understanding mechanical components is essential for engineers and designers, as they must select the right parts to ensure reliability and performance. For instance, motors convert electrical energy into mechanical energy, while pulleys help change the direction of force. Together, these components create the complex machinery we rely on in everyday life.