What is vibration acceleration?

Vibration acceleration is the rate of change of vibration velocity, measured in m/s² or g (where 1 g = 9.80665 m/s²). It is the most sensitive parameter to high-frequency vibration and is critical for detecting bearing defects, gear mesh faults, and other high-frequency mechanical problems. Acceleration increases with both vibration amplitude and frequency.

When should I use acceleration instead of velocity for vibration monitoring?

Acceleration is preferred for high-frequency vibration analysis, typically above 1000 Hz. It is the best parameter for early detection of rolling element bearing defects, gear mesh problems, and cavitation. Velocity (mm/s RMS) is better for general machine condition in the 10–1000 Hz range, while displacement is preferred below 10 Hz. Many modern condition monitoring systems use acceleration enveloping (demodulation) for bearing diagnostics.

How do I convert g to m/s²?

To convert from g to m/s², multiply by 9.80665 (standard gravity). For example, 0.5 g = 0.5 × 9.80665 = 4.903 m/s². Conversely, to convert m/s² to g, divide by 9.80665. The g unit is commonly used in vibration analysis because typical industrial vibration levels fall in a convenient range of 0.01 to 50 g.

What sensors measure vibration acceleration?

Piezoelectric accelerometers are the standard sensors for measuring vibration acceleration. IEPE (ICP) type accelerometers with integrated electronics are most common in industrial applications. They offer wide frequency range (0.5 Hz to 20 kHz+), high sensitivity, and excellent durability. MEMS accelerometers are used in lower-cost monitoring systems but typically have more limited frequency range and accuracy. Charge-mode accelerometers are used for high-temperature applications.

What is typical vibration acceleration for industrial machines?

Typical vibration acceleration levels vary widely with machine type and frequency. For general industrial machinery at operating speed: good condition is below 0.5 g, acceptable is 0.5–2 g, and alarm levels are typically 2–5 g at bearing housings. High-frequency bearing defect signals can reach 10–50 g peak. ISO 20816 primarily uses velocity for zone evaluation, but acceleration is measured directly by accelerometers and is essential for high-frequency diagnostics.

मुक्त अभियांत्रिकी साधन

कंपन त्वरण कॅल्क्युलेटर (ISO 20816)

कोणत्याही वारंवारतेवर कंपन वेग (mm/s RMS) त्वरणात (m/s², g) रूपांतरित करा. त्वरण RMS, peak आणि displacement परिणाम मिळवण्यासाठी velocity आणि frequency प्रविष्ट करा.

ISO 20816 m/s² & g Hz / RPM

Results

त्वरण RMS

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त्वरण शिखर

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त्वरण RMS (g)

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त्वरण शिखर (g)

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वेग RMS

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वेग शिखर

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विस्थापन peak-to-peak

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वारंवारता

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वेगावरून त्वरण

sinusoidal कंपनासाठी, कोनीय वारंवारतेने गुणाकार करून त्वरण वेगापासून मिळते:

g मध्ये रूपांतरण

वेगावरून विस्थापन

जिथे:

v_RMS — कंपन वेग RMS (mm/s)
f — वारंवारता (Hz); RPM दिल्यास: f = RPM / 60
a_RMS — त्वरण root mean square (m/s²)
a_शिखर — त्वरण peak = a_RMS × √2 (m/s²)
d_pp — विस्थापन peak-to-peak (μm)

व्यावहारिक उदाहरण

उदाहरण — 25 Hz वर 4.5 mm/s RMS

a_RMS = 4.5 × 2π × 25 / 1000 = 0.707 m/s²

a_शिखर = 0.707 × √2 = 1.000 m/s²

a_g,RMS = 0.707 / 9.80665 = 0.072 g

d_pp = 4.5 × √2 × 1000 / (π × 25) = 81.0 μm

कंपन परिमाण तुलना

परिमाण	सर्वोत्तम वारंवारता श्रेणी	सामान्य एकके	मुख्य उपयोग
विस्थापन	< 10 Hz (600 RPM)	μm p-p	कमी वेगाच्या यंत्रणा, शाफ्ट कंपन
वेग	10–1000 Hz	mm/s RMS	सामान्य यंत्र स्थिती (ISO 10816)
त्वरण	> 1000 Hz	m/s², g	बेअरिंग दोष, gear mesh, उच्च-वारंवारता

Vibration Acceleration Calculator — mm/s to m/s² & g

Published by Nikolai Shelkovenko on फेब्रुवारी 15, 2026 मार्च 5, 2026

Results

वेगावरून त्वरण

g मध्ये रूपांतरण

वेगावरून विस्थापन

व्यावहारिक उदाहरण

कंपन परिमाण तुलना

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