ISO 10816-3 emphasizes that . A machine moving from 2.0 mm/s to 4.0 mm/s in one month (still Zone B) is more alarming than a machine stable at 5.5 mm/s (Zone C). Always set an "alert" level at 1.5x the baseline or a fixed delta (e.g., +1 mm/s per week).
Metric (mm/s) is the primary unit. However, the standard provides conversions to imperial (in/s). 1 in/s = 25.4 mm/s. So, the common imperial threshold of 0.2 in/s is approximately 5.1 mm/s (Zone B/C boundary for Class 2R). vibration standard iso 10816-3 pdf
| Machine Class | Zone A (Good) | Zone B (Satisfactory) | Zone C (Unsatisfactory) | Zone D (Unacceptable) | | :--- | :--- | :--- | :--- | :--- | | | ≤ 1.8 mm/s | 1.8 – 4.5 mm/s | 4.5 – 11.0 mm/s | > 11.0 mm/s | | Class 1F (Large Flexible) | ≤ 2.8 mm/s | 2.8 – 7.1 mm/s | 7.1 – 18.0 mm/s | > 18.0 mm/s | | Class 2R (Medium Rigid) | ≤ 2.3 mm/s | 2.3 – 5.6 mm/s | 5.6 – 13.2 mm/s | > 13.2 mm/s | | Class 2F (Medium Flexible) | ≤ 3.5 mm/s | 3.5 – 8.5 mm/s | 8.5 – 18.0 mm/s | > 18.0 mm/s | ISO 10816-3 emphasizes that
The stands as the cornerstone benchmark for monitoring and evaluating mechanical vibrations in industrial machinery. Titled "Mechanical vibration — Evaluation of machine vibration by measurements on non-rotating parts — Part 3: Industrial machines with nominal power above 15 kW and nominal speeds between 120 r/min and 15 000 r/min when measured in situ," this document dictates operational tolerance thresholds across global manufacturing sectors. Plant engineers, maintenance personnel, and reliability experts utilize the ISO 10816-3 PDF Guidelines to establish baseline health tracking, configure alarms, and mitigate catastrophic asset downtime. 1. Scope and Core Technical Parameters Metric (mm/s) is the primary unit
3.5 (A/B), 7.1 (B/C), 11.0 (C/D). ISO 10816-3 - iTeh Standards
The scope of ISO 10816-3 includes:
Before diving into Part 3 specifically, it is essential to understand the context of the broader ISO 10816 series. The International Organization for Standardization (ISO) developed this series to provide a uniform method for evaluating mechanical vibration in various types of machinery.