"SINGE ROW ANGULAR CONTACT BALL BEARING; COMPRISE SOLID OUTER RINGS, SPLIT INNER RINGS, BALL AND CAGE ASSY; 2 REATINING SLOTS IN OUTER RING; SOLID BRASS CAGE; WINDOW CAGES ARE GUIDED ON THE OUTER RING; TEM RANGE IS -30 TO +150 DEGREES C; NOT GREASED BUT CAN BE LUBRICATED WITH GREASE OR OIL; BEARINGS ARE NOT SEALED"