Elias paused. He looked back at his screen. He had checked the amplitude, but he hadn't checked the phase stability. He quickly reran the analysis, focusing on the phase. It was fluctuating erratically.
Unbalance occurs when the mass centerline of a rotating element does not coincide with its geometric centerline. Dominant 1x RPM (running speed) peak. Phase: Radial phase is steady; a 90∘90 raised to the composed with power shift exists between horizontal and vertical measurements. Direction: Predominantly radial (horizontal and vertical). Misalignment
Multiple harmonics (1x, 2x, 3x, ..., nx RPM). Waveform: Often shows intermittent or irregular impacts. Vibration Analysis Wall Chart Pdf
Technicians can view the chart on tablets or smartphones directly in the field.
If you are looking to narrow down your asset care strategy, let me know: Elias paused
For three years, the main conveyor motor (Machine #4) at the Apex Manufacturing facility ran without issue. Sarah, the lead maintenance technician, knew its "normal" hum better than her own car engine.
Most comprehensive charts, such as those from Reliability Maintenance Solutions or Full Spectrum Diagnostics , categorize data into three primary domains: He quickly reran the analysis, focusing on the phase
Helps less experienced analysts transition from raw data collection to actionable machinery health reports. Full Spectrum Diagnostics Key Components of a Wall Chart
Quickly find specific terms like "vane pass frequency," "eccentricity," or "sub-harmonics" without scanning the entire document.
Typically associated with Misalignment or a bent shaft, especially when accompanied by high axial vibration.