Table 2.
Calculated frequency values of BSF, BPFO, BPFI, and FTF and the measurement results of the commercial sensor and KNN sensor.
| Bearing No. | Bearing Position | Ball Spin Frequency (BSF) |
Ball Pass Frequency Outer Race (BPFO) |
Ball Pass Frequency Inner Race (BPFI) |
Fundamental Train Frequency (FTF) |
|
|---|---|---|---|---|---|---|
| 6320 | Pump Drive End (DE) | Calculated | 40.12 Hz | 60.38 Hz | 96.96 Hz | 7.47 Hz |
| Measured (Commercial sense) |
40.00 Hz | 62.00 Hz | 96.50 Hz | - | ||
| Measured (KNN sensor) |
42.00 Hz | 62.00 Hz | 96.50 Hz | - | ||
| 6226 | Motor Drive End (DE) | Calculated | 53.89 Hz | 72.96 Hz | 104.04 Hz | 8.06 Hz |
| Measured (Commercial sense) |
51.50 Hz | 71.50 Hz | 104.00 Hz | - | ||
| Measured (KNN sensor) |
51.50 Hz | 71.50 Hz | 104.00 Hz | - |