Rotating machinery refers to equipment that has parts that spin or rotate to perform a specific function. Common examples include electric motors, turbines, and pumps. These machines convert energy into mechanical work, making them essential in various industries, such as manufacturing and power generation. The design of rotating machinery often involves components like shafts, bearings, and gears that work together to ensure smooth operation. Proper maintenance is crucial to prevent wear and tear, which can lead to failures. Understanding the principles of rotating machinery helps improve efficiency and reliability in many applications.