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Table 1 Gearbox characteristic frequencies

From: Acoustics Based Monitoring and Diagnostics for the Progressive Deterioration of Helical Gearboxes

Gearbox No. SRF (Hz) GMF (Hz)
GB1 \({f}_{r1}=17.3\)
\({f}_{r2}=15.4\)
\({f}_{m1}=847.7\)
\({f}_{r2}=15.4\)
\({f}_{r3}=3.39\)
\({f}_{m2}=200.2\)
GB2 \({f}_{r3}=3.39\)
\({f}_{r4}=15.4\)
\({f}_{m3}=200.2\)
\({f}_{r4}=15.4\)
\({f}_{r5}=12.48\)
\({f}_{m4}=723.84\)