Vibration Trend RUL Estimator
Log overall vibration velocity readings, see the wear trend and get a projected date when the 7.1 mm/s limit will be reached.
Readings stay in your browser (localStorage) โ nothing is uploaded.
Straight-line (least-squares) extrapolation of your logged readings to the 7.1 mm/s alarm threshold (warning at 4.5 mm/s). A low Rยฒ means the trend is noisy โ log more readings before trusting the projection.
Field notes from maintenance practice
This is the companion to the per-machine zone checkers: they grade a single reading, this one turns your reading history into a date. The pros' habit is worth copying โ halve the measurement interval every time the level crosses a zone boundary, so by zone C you are measuring weekly and the final rise can't surprise you. The default action limit of 7.1 mm/s comes from the ISO 10816 zone C/D boundary for a medium machine on rigid support (7.1 mm/s); set your own machine's class boundary instead if it differs; adjust it if your OEM or procedure specifies otherwise.
Linear extrapolation is honest only when the Rยฒ is decent (โฅ 0.7) and degradation is steady. Bearing-driven vibration often climbs exponentially in the final weeks; treat any upward bend versus the fitted line as an acceleration warning and shorten the measurement interval as levels rise. If the last reading jumps far off the line, re-measure before believing it โ measurement technique drifts too.
Sources & references
- ISO 10816 / 20816 โ vibration severity zones
- ISO 13381-1 โ condition monitoring and diagnostics, prognostics
Trend screening only โ confirm with a proper inspection before running equipment to a projected limit.
Vibration Trend RUL Estimator for maintenance and reliability teams: Log overall vibration velocity readings, see the wear trend and get a projected date when the 7.1 mm/s limit will be reached. Free, private (everything runs in your browser) and ready for daily plant use.
About Vibration Trend RUL Estimator
This tracker is a remaining-useful-life (RUL) estimator for overall vibration velocity. Log a dated reading whenever you measure; the tool fits a least-squares straight line through your history and projects when it will cross the 7.1 mm/s action limit (warning at 4.5 mm/s) โ turning scattered measurements into a forecast date you can plan parts and downtime around.
How to use Vibration Trend RUL Estimator
- 1Enter each dated measurement as you take it โ readings persist in your browser between visits.
- 2Adjust the alarm (and warning) threshold to your OEM or procedure limit if it differs from the default.
- 3Read the fitted trend, Rยฒ, days-to-alarm and the projected date โ then plan parts and downtime around that date.
Why use Vibration Trend RUL Estimator?
- โLog overall vibration velocity readings, see the wear trend and get a projected date when the 7.1 mm/s limit will be reached โ computed instantly with the standard formula
- โ100% free and unlimited, with no sign-up, login or paywall
- โRuns entirely in your browser โ readings and asset data never leave your device
- โNiche-specific defaults and thresholds for overall vibration velocity, traceable to the cited standards
Frequently asked questions
What limit should trigger action for overall vibration velocity?+
The widely used limit is 7.1 mm/s (the ISO 10816 zone C/D boundary for a medium machine on rigid support (7.1 mm/s); set your own machine's class boundary instead if it differs). Set a warning at 4.5 mm/s so parts and labour are ready before the alarm. Your OEM manual or internal procedure overrides the generic figure.
My vibration trend is flat for months then suddenly jumps โ can a line predict that?+
Not the jump itself โ step changes mean a discrete event (spall initiation, looseness developing, coupling damage). What the line gives you is the baseline that makes the jump unmistakable, and the post-jump slope to project from. After any step change, discard pre-jump points from the fit and re-project using only the new regime.
How many readings before the projection is trustworthy?+
At least 4โ6 spread over a meaningful fraction of the asset's life, with a fit Rยฒ of about 0.7 or better. Two points always make a perfect line โ that is curve fitting, not condition monitoring. Keep measurement conditions (load, temperature, location) consistent.
Is straight-line extrapolation valid for wear?+
It is the standard first approximation for steady-state degradation, and it is deliberately conservative to act on. Many failure modes accelerate near the end (bathtub curve), so treat the projected date as the latest acceptable intervention date, not a promise.
Where is my logged data stored?+
Entirely in your browser's localStorage on this device โ nothing is uploaded to any server. Export or note critical values elsewhere if you need a permanent maintenance record shared across a team.
Embed Vibration Trend RUL Estimator on your website
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