The utility model provides a production centerless grinder for bearing, includes fuselage, casing and transmission shaft coupling, the upper left end of fuselage is equipped with the casing, and the upper right end of fuselage is equipped with the transmission shaft coupling, be equipped with the emery wheel in the casing, the upper left end of casing is equipped with speed adjusting device, being equipped with the guide pulley layer board between casing and the transmission shaft coupling, being equipped with the guide pulley in the guide pulley layer board, the top of guide pulley layer board is equipped with adjusting device, be equipped with the bracket between guide pulley and the emery wheel, the emery wheel includes grinding wheel base body, and grinding wheel base body's one end terminal surface is ultrasion vibration sysytem, other end terminal surface is the grinding terminal surface, sets firmly three rings of annular grinding layers of circle of concentric setting on grinding wheel base body's the grinding terminal surface, and grit in three rings of grinding layers is by outer to interior in proper order for corase grind grit, well mill grit and correct grinding grit, and three rings of grinding layers are distinguished to the interior corase grind district that forms in proper order, zhong mo district and correct grinding by outer.