Wind Main Bearing Vibration Analyzer
ISO 10816-21 zone check and trend analysis for main (rotor) shaft bearing vibration.
Main bearings turn at 10–20 RPM, far too slow for standard velocity limits — acceleration enveloping and grease analysis carry the diagnosis, with velocity zones used only as a coarse screen. Enter your latest broadband RMS velocity and the previous reading: the tool places you in the ISO 10816-21 zone for the main (rotor) shaft bearing, computes the monthly growth rate, and projects when the trend crosses the alert boundary.
Zones follow ISO 10816/20816 wind-turbine guidance: A/B = continue running, C = schedule the crane/repair, D = damage progressing. The trend matters more than the absolute number — a doubling in 3 months at any level is a fault signature.
Engineering estimate from published standards and typical equipment data. Site conditions, equipment datasheets and measured data govern the real result — confirm with a qualified engineer.
Use the free Wind Main Bearing Vibration Analyzer online — ISO 10816-21 zone check and trend analysis for main (rotor) shaft bearing vibration. Runs instantly in your browser: no signup, no upload, mobile-friendly.
About Wind Main Bearing Vibration Analyzer
Main bearings turn at 10–20 RPM, far too slow for standard velocity limits — acceleration enveloping and grease analysis carry the diagnosis, with velocity zones used only as a coarse screen. Enter your latest broadband RMS velocity and the previous reading: the tool places you in the ISO 10816-21 zone for the main (rotor) shaft bearing, computes the monthly growth rate, and projects when the trend crosses the alert boundary.
How to use Wind Main Bearing Vibration Analyzer
- 1Enter the current broadband RMS velocity for the component.
- 2Add the previous reading and the months between.
- 3Read the ISO zone, growth rate and projected months to alert.
Why use Wind Main Bearing Vibration Analyzer?
- ✓ISO 10816-21 zone boundaries for the exact component, not generic machine limits
- ✓Trend math: %/month growth and projected time to the alert zone
- ✓Component-specific failure-mode notes from field practice
- ✓Two readings and a date gap become a maintenance forecast
Frequently asked questions
What vibration level is acceptable on a wind turbine?+
Component-specific per ISO 10816-21: gearbox shafts alert around 3–7 mm/s RMS, generator bearings 6–10, main bearings far lower (slow shafts), tower-top structural readings much higher. This tool applies the right boundary set automatically — generic ISO machine charts mislead on turbines.
Which matters more — the level or the trend?+
The trend. A bearing at 60% of the alert limit doubling every quarter will fail; one sitting at 90% for years may be fine. The %/month figure and time-to-alert projection are this tool's real outputs — single snapshots only ambush you politely.
How often should turbine vibration be measured?+
Continuous CMS for MW-class machines is standard; for portable-route monitoring, monthly on known-degrading components, quarterly otherwise. The faster the observed growth rate, the shorter the interval — adjust until the next reading can't surprise you.
What causes rising vibration in the Wind Main Bearing Vibration Analyzer's component?+
The component note in the tool flags the classic mode — HSS pitting, electrically-fluted generator bearings, rotor imbalance at the tower. Confirm with spectrum analysis (defect frequencies) before ordering parts; broadband RMS finds the problem, the spectrum names it.
Embed Wind Main Bearing Vibration Analyzer on your website
Want Wind Main Bearing Vibration Analyzeron your own site? Paste this snippet into any HTML page — it's free, with no API key or sign-up. The tool loads in an iframe and keeps working exactly as it does here.
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