The invention provides a grinding loading disc and a grinding device which are applicable to a bearing ring. The grinding loading disc comprises a rotating outer tooth ring, a grinding mother-disk anda grinding sub-disk which are mutually nested, wherein outer teeth are arranged on the periphery of the rotating outer tooth ring; disk holes which can be matched with the appearance of the grindingsub-disk are formed in the grinding mother-disk; and positioning holes are formed in the grinding sub-disk. The grinding loading disc and the grinding device which are applicable to the bearing ring can be applicable to the grinding and machining of double end surfaces of many varieties of bearings with different specifications, is convenient for machining, reduces the machining cost and improvesthe convenience, interchangeability and universality of operation; the application range of the grinding loading disc and the grinding device is extended; meanwhile, the material performances are improved, the machining method is simple, and the machining efficiency is high, and the machining difficulty is reduced; the machining efficiency is substantially improved; and the production cycle is shortened.