90 mm x 190 mm x 43 mm ISB 1318 self aligning ball bearings

90 mm x 190 mm x 43 mm ISB 1318 self aligning ball bearings with easy-to-use parts graphics, giving you the SKF Wheel Bearings DEVELOP MFG.CORP. 90 mm x 190 mm x 43 mm ability to check parts availability, 90x190x43 Bearing pricing, examine remanufactured options. H7 Tolerance housing

What is 1318 bearing cross reference？