ROOTCASTLE / ENGINEERING LAB
Browser lab
Calculators with visible equations and explicit units.
SIMULATED · NOT LIVE TELEMETRY
Calculators
- FTF [Hz]
- 12.000
- BPFO [Hz]
- 96.000
- BPFI [Hz]
- 144.000
- BSF [Hz]
- 72.000
- f = RPM / 60 [Hz]
- 30.000
- GMF = Z · RPM / 60 [Hz]
- 720.000
- Nyquist = fs / 2 [Hz]
- 1024.0
- 4–20 mA → 0–100 bar
- 50.00
- 1 g → m/s²
- 9.80665
- 1 mm/s → m/s
- 0.001
- GPS [rad]
- 0.715728, 0.505768
- SI
- 123.5E3
Model and assumptions
Ideal kinematics and linear conversions. Bearing outer race stationary, no slip. Sensor scaling is not a substitute for calibration.
f=RPM/60; c=(d/D)cosα; FTF=f(1−c)/2; BPFO=nf(1−c)/2; BPFI=nf(1+c)/2; BSF=Df(1−c²)/(2d); GMF=Zf; y=y₀+(x−x₀)(y₁−y₀)/(x₁−x₀); rad=deg·π/180.
Educational model. Results are not sufficient to diagnose a machine or establish safe operating limits.
Method reference: NI — Understanding FFTs and Windowing ↗