Characteristic inner ring frequency, BPFI NTN DCL228F Drawn cup needle roller bearings

Fw:34.92 mm; D:41.28 mm; C:12.7 mm; Dw:2.49 mm; Lw:7.6 mm; Lubrication hole on outer ring:Non/No; Inner ring reference:No; Mass:0.03 kg; Cr:13.4 kN; C0r:21.4 kN; Nlim (grease):4,700 rpm; Nlim (oil):7,000 rpm; Min operating temperature, Tmin:-20 °C; Max operating temperature, Tmax:120 °C; Characteris