Bearing 232R. Excerpt from MRC Doc. BPFI = 0

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Presentation transcript:

Bearing 232R. Excerpt from MRC Doc. BPFI = 0 Bearing 232R. Excerpt from MRC Doc. BPFI = 0.1651hz at 1rpm shaft speed. BFPI Orders = 0.1651*60 =9.9 orders

Fault Frequncies in orders

Hi-Res Freqs 1x=1190

Harmonics of BPFI

1x Sidebands around BPFI harmonics.

Highest peak is 1x sidebands below BPFO harmonic

Multiple 1X SB’s around BPFI fundamental 9.87+/- k*1.0

Twf – up to 7g’s pk/pk. Modulates at 1x

Zoom in on TWF does not reveal any regular spacing of impacts such as 9.87

Spacing around 7 (expect

? Harmonics 5.4

Ringdown freq 384,000 cpm (325 orders)

Likely 1* RBPF

Likely 2*RBPF

Misc on hi-freq plot

6.02 has harmonics and 1x sidebands

Speed is 1194 on high res spectrum – use for next slide.

Auto-correlation shows discrete time peaks at time intervals which are exact multiples of BPFI period. (The broad pattern modulates at 1x)