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ISO 10816 Vibration Severity & Machine Health Calculator mechanical
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ISO 10816 Vibration Severity & Machine Health Calculator

Evaluate industrial rotating machinery vibration severity across ISO 10816 / ISO 20816 Zone A, B, C, and D limits. Convert between RMS velocity, peak acceleration (G), and displacement.

Vibration Measurement & Machine Speed

ISO 10816-3 Machine Classification

Vibration Health Assessment

ISO 10816 Health Rating
--
--
Overall RMS Velocity
-- mm/s
-- in/s RMS
Calculated G-Force (Acc.)
-- G pk
-- m/s²
Peak-to-Peak Displacement: -- mils (-- µm)
ISO Alarm Threshold (Zone C): -- mm/s
ISO Trip / Shutdown Limit (Zone D): -- mm/s
--

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Frequently Asked Questions

What are the four ISO 10816 vibration severity zones?

Zone A represents newly commissioned machinery condition. Zone B indicates normal, unrestricted continuous operation. Zone C represents unsatisfactory vibration where machines can operate temporarily until scheduled maintenance. Zone D represents dangerous levels causing rapid fatigue damage, requiring immediate shutdown.

Why is RMS velocity the standard metric for machinery health?

RMS velocity directly reflects the destructive kinetic energy and fatigue stress transmitted through bearing housings across typical rotational frequencies (10 Hz to 1000 Hz). Unlike displacement (which emphasizes low frequencies) or acceleration (which emphasizes high frequencies), velocity provides uniform severity assessment.

How does foundation stiffness (rigid vs flexible) change vibration limits?

A flexible (soft) foundation naturally moves more in response to dynamic forces than a massive rigid concrete inertia block. Because of this structural compliance, ISO 10816 allows approximately 50% higher vibration velocity limits for flexible foundations compared to rigid mountings.