Bearing grease filtering device

The invention discloses a bearing grease filtering device in the technical field of bearings. The bearing grease filtering device comprises a filtering device shell with various hardware arranged in an inner cavity, a first filtering device oil inlet is formed in the top of the inner cavity of the filtering device shell, a first grease filtering shell is arranged at the bottom of the first filtering device oil inlet, and a second filtering device oil inlet is formed in the bottom of the first grease filtering shell. A grease filtering piece shell is arranged at the bottom of the second filtering device oil inlet, a third filtering device oil inlet is formed in the bottom of the grease filtering piece shell, a second grease filtering shell is arranged at the bottom of the third filtering device oil inlet, and a filtering device oil outlet is formed in the bottom of the second grease filtering shell; the grease filtering device has the advantages that the grease filtering device is simple in structure and conve