NKJA5903 Combined Needle Bearing 17x30x18mm - Machined TypeNKJA5903 Combined Needle Bearing 17x30x18mm 17mm x 30mm x 18mm VXB Bearing NKJA5903 is a combined bearing type, needle roller bearing with angular contact thrust bearing, the NKJA5903 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: 17x30x18 mm ID (inner diameter) Bore=17mm OD (outer diameter)=30mm Width