What does "RPM" stand for in the context of machining?

In machining, "RPM" stands for Revolutions Per Minute. This term is critical because it represents the number of times the rotating spindle of a machine tool makes a complete revolution in one minute. Understanding RPM is essential for operators, as it directly affects the cutting speed, surface finish, and efficiency of machining operations.

When machining materials, selecting the appropriate RPM allows for optimal cutting conditions. A higher RPM can increase productivity by improving material removal rates, while too high an RPM can lead to excessive tool wear or damage. Conversely, too low an RPM can result in poor surface finishes and inefficient cutting. Therefore, mastering the concept of RPM is vital for any machinist working to maintain precision and quality in their work.