Internal grease injection mechanism for ball bearing

The utility model provides a grease injection mechanism in a ball bearing, and belongs to the technical field of grease injection equipment. The problems of low efficiency and non-uniform grease injection in the existing grease injection in the bearing are solved. The ball bearing internal grease injection mechanism comprises a base, a support, a lifting air cylinder, a grease injection air cylinder and a storage box, the support is in a 7 shape and fixed to the base, the lifting air cylinder is vertically fixed to the base, the grease injection air cylinder is vertically fixed to the upper portion of the support and opposite to the lifting air cylinder, and the storage box is located on the side of the grease injection air cylinder and connected with the grease injection air cylinder. A positioning table used for containing a bearing is fixed to the end of the lifting air cylinder, a grease injection opening is formed in the position, located above the positioning table, of the support, and the grease inject