... ,639series,60series,62series,63series and 64series 2,Our Deep V Groove Guide bearing ToleranceLevels of our bearings include ABEC-1, ABEC ... groove ball bearing, Self aligning ball bearing,Thrust ball /roller bearing, Spherical roller bearing,Cylinderical roller bearing. Tapered roller bearing,Angular contact ball bearing, Needle roller bearing,Pillow block bearing, Linear bearing, Special bearing,Rod ...