F 15 Bearing No. index Bearing series (series name) Description Page W69··ZZ Extra-small ball bearing, miniature ball bearing, shielded A4, A56, B5, B40 WF60··ZZ Extra-small ball bearing, miniature ball bearing, flanged type, shielded A4, A56, B5, B46 WF68··ZZ Extra-small ball bearing, miniature ball bearing, flanged type, shielded A4, A56, B5, B46 WF69··ZZ Extra-small ball bearing, miniature ball bearing, flanged type, shielded A4, A56, B5, B46 WJ Radial needle roller and cage assembly, single-row, inch series, high load capacity A8, B363, B408 WJC Radial needle roller and cage assembly, single-row, inch series A8, B363, B408 WML··2RS Extra-small ball bearing, miniature ball bearing, contact sealed A4, A56, B5, B42 WML··ZZ Extra-small ball bearing, miniature ball bearing, shielded A4, A56, B5, B40 WMLF··ZZ Extra-small ball bearing, miniature ball bearing, flanged type, shielded A4, A56, B5, B46 WS.811 Race, thrust needle roller and cylindrical roller, shaft piloted, metric series A12, B363, B444 WS.812 Race for thrust cylindrical roller and cage assembly, shaft piloted, metric series A12, B363, B448