Characteristic rolling element frequency, BSF NTN HK4020LL/3AS Drawn cup needle roller bearings

Fw:40 mm; D:47 mm; C2:20 mm; C3:2.7 mm; Dw:2.5 mm; Lw:11.8 mm; Lubrication hole on outer ring:Non/No; Inner ring reference:No; Mass:0.05 kg; Cr:21.1 kN; C0r:40 kN; Nlim (grease):4,000 rpm; Min operating temperature, Tmin:-20 °C; Max operating temperature, Tmax:120 °C; Characteristic cage frequency,