MOCHUDrawn cup needle curler bearings with open ends, to ABMA 18.2 - 1982, inch sizes1 PCSSCE108Fw 15.875 mm Under roller diameter D 20.638 mm Outside diameter C 12.7 mm WidthDrawn cup needle roller bearings with open ends and with closed finish are needle roller bearings with a completely small radial part height. They comprise thin-walled, drawn cup outer rings and needle curler and cage assemblies which collectively form a whole unit.