Lubrication hole on outer ring NTN HK4518L/3AS Drawn cup needle roller bearings

Fw:45 mm; D:52 mm; C1:18 mm; C3:2.7 mm; Dw:2.5 mm; Lw:11.3 mm; Lubrication hole on outer ring:Non/No; Inner ring reference:IR40X45X20; Mass:0.05 kg; Cr:21.6 kN; C0r:43 kN; Nlim (grease):3,600 rpm; Min operating temperature, Tmin:-20 °C; Max operating temperature, Tmax:120 °C; Characteristic cage fre