Rolling bearing outer ring fault frequency: BPFOr≌0.4Nn
Rolling bearing inner ring fault frequency: BPFIr≌0.6Nn
Rolling bearing cage failure frequency: FTFr≌0.4N
The above symbols:
n = number of rolling elements.
N = speed of the shaft.
Note: 1. The rolling bearing does not slide; 2. The rolling bearing geometry does not change; 3. The bearing outer ring is fixed and does not rotate.
Rolling bearing outer ring fault frequency: BPFOe≌N (0.5n-1.2)
Rolling bearing inner ring fault frequency: BPFIe≌N (0.5n+1.2)
Rolling bearing rolling element failure frequency: BSFe≌N (0.2n-1.2/n)
Rolling bearing cage failure frequency: FTFe≌N (0.5-1.2/n)
The above symbols:
n = number of rolling elements.
N = speed of the shaft.
Note: 1. The rolling bearing does not slide; 2. The rolling bearing geometry does not change; 3. The bearing outer ring is fixed and does not rotate.
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