Self-lubricating guide sleeve with high coaxiality

The utility model relates to a high-coaxiality self-lubricating guide sleeve, which relates to the field of guide sleeves for numerical control machine tools, aims to solve the problem that the existing guide sleeve is very troublesome to fill solid lubricating oil, and comprises a guide sleeve body, a flange plate and a lubricating ring groove, wherein the operation ring groove is formed in the end, away from the flange plate, of the peripheral wall of the guide sleeve body, the material guide channel is formed in the ring wall of the side, away from the flange plate, of the lubricating ringgroove, the material guide channel extends into the operation ring groove in the axial direction of the guide sleeve body, a material carrying ring sleeves the inner ring wall of the operation ring groove, and a material carrying groove is formed in the inner ring wall of the material carrying ring. A material carrying cavity is formed between the groove wall of the material carrying groove and the groove wall of the oper