ROOTCASTLE / ENGINEERING LAB
Gear mesh faults
Pagbabago ng tooth-contact stiffness ay excites gear mesh frequency; damage ay maaaring modulahin ang excitation.
Mechanism
Pagbabago ng tooth-contact stiffness ay excites gear mesh frequency; damage ay maaaring modulahin ang excitation.
Typical symptoms
Mga sidebands na spaced sa shaft around gear mesh frequency at impacts ay maaaring magpakita.
Methode ng pagkakabadyet
Record tooth counts at shaft speeds; inspect the spectrum at comparable load.
Alternative explanations
Ang normal load modulation, eccentricity, at transmission paths ay maaaring mag-influence sa sidebands.
Additional measurements
Pagsusuri ng patalim, pagsusuri ng partikulo ng langis, pagkakapantay-pantay ng load at backlash.
Likely frequency components
GMF = teeth × RPM / 60; GMF ± shaft Hz
Mga limitasyon: nang walang speed, load, mounting, at transmission-path context, hindi ito diagnoses. Ang spectrum examples ay conceptual, hindi complete fault models o field measurements.
SIMULATED · NOT LIVE TELEMETRY
Vibration / FFT
Model and assumptions
512 samples; deterministic sinusoids and seeded noise. FFT is one-sided peak amplitude, not RMS. Δf = fs/N. Hann coherent gain is corrected; spectral leakage can remain. The 4.7× component is not a physical bearing-fault model.
Educational model. Results are not sufficient to diagnose a machine or establish safe operating limits.
Further reading: SKF — Ang mga pag-aalinlangan ay makakatulong na makita ang mga nasira na sangkap ↗