: Medium-sized machines with power between 15 kW and 300 kW (e.g., standard industrial motors).
Vibration levels are acceptable for unrestricted, long-term operation; most well-maintained machines operate here. iso 10816-3 vibration severity chart
The ISO 10816-3 chart specifically utilizes measured as RMS (Root Mean Square) . Why is this the chosen metric? : Medium-sized machines with power between 15 kW
ISO 10816-3 vibration severity chart provides standardized guidelines for assessing the health of industrial machines with a power output above 15 kW and operating speeds between 120 and 15,000 RPM. It classifies machinery into specific groups and defines four vibration severity zones to help maintenance teams determine if equipment needs immediate attention or can continue running safely. Machine Group Classifications Why is this the chosen metric
The device then lights up a , Yellow (C) , or Red (D) LED directly on the screen.
The chart is a matrix. The represent the machine class . The columns represent severity zones : Zone A, Zone B, Zone C, Zone D.
The machine is bolted directly to a concrete pad or heavy structural steel. These setups require lower (stricter) vibration limits because vibration is transmitted directly to the structure.