How is the speed of an electric file measured?

The speed of an electric file is measured in revolutions per minute (RPM). This unit indicates how many complete turns the file's motor makes in one minute. Understanding RPM is crucial for professionals because it correlates directly to the efficiency and effectiveness of the filing process. A higher RPM typically means a faster operation, which can be critical for tasks like shaping nails or removing product quickly.

While other measurements such as feet per minute (FPM), strokes per minute (SPM), and watts per minute (WPM) refer to different aspects of mechanics or energy usage, they do not apply directly to the speed of the file’s motor in the context of nail technology. Therefore, RPM is the standard measurement used to gauge the performance and suitability of electric files for various nail services.