Vibration Analysis Wall Chart Pdf

Let's put the wall chart to use. The following table summarizes the key vibration "fingerprints" for several common faults, a core feature of any good diagnostic chart. Use this as a guide for interpreting the data you see on your analyzer.

[Stage 1: Ultra-High Freq] ──> [Stage 2: Natural Freq] ──> [Stage 3: Defect Frequencies] ──> [Stage 4: Noise Floor Rise] The Four Stages of Bearing Wear

Ball Spin Frequency (indicates rolling element damage).

Common mechanical issues like misalignment or unbalance.

5. Practical Implementation and Data Collection Best Practices Vibration Analysis Wall Chart Pdf

The accuracy of your diagnostic chart depends entirely on the quality of your raw data collection. Follow these procedures to eliminate measurement errors. Triaxial Data Points

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Often periodic and repetitive; may show two peaks (events) per revolution for offset misalignment. 3. Mechanical Looseness Dominant Frequencies: Multiples (harmonics) of running speed ( Direction: Let's put the wall chart to use

Ball Pass Frequency Outer Race (most common, highly visible).

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running speed in the axial direction, look at the "Misalignment" section of your wall chart. Check if your secondary symptoms (such as phase shift) match the chart's description. Step 4: Rule out False Positives [Stage 1: Ultra-High Freq] ──> [Stage 2: Natural

Vibration spectra contain intricate details, such as subtle sidebands or closely spaced peaks (e.g., separating electrical line frequency from twice running speed). A digital PDF allows you to zoom in on complex diagrams without losing clarity. 3. Quick Keyword Searching

Start by looking at the highest peak in your FFT spectrum. Is it exactly 1× RPM? Is it 2× RPM? Or is it a nonsynchronous peak like 4.9× RPM (BPFO)? The chart allows you to match this exact frequency to a potential fault category.

Mechanical looseness splits into structural weakness (Type A), rocking/cracked components (Type B), and loose bearing liners or fits (Type C).

High 2X peak often exceeds the 1X peak. High axial vibration. 180∘180 raised to the composed with power

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