NKIA5903 Combined Needle Bearing 17x30x18mm - Machined TypeNeedle Roller Bearing NKIA5903 NKIA5903 is a combined bearing type, needle roller bearing with angular contact thrust bearing, the NKIA5903 inner diameter is 17mm, the outer diameter is 30mm, width of the cone (inner ring) is 18mm. Needle roller bearing combined with angular contact thrust bearing Dimensions Standard: Metric Dimensions: 17*30*18 mm ID (inner diameter) Bore=17mm OD (outer diameter)=30mm Width Height thickness=18mm Size: 17mm x 30mm x