Oiless compressor

The utility model discloses an oiless compressor which comprises an air cylinder, a connecting rod, a leather cup, a cover plate and a one-way valve, wherein the connecting rod is provided with a connecting rod upper cover and a connecting rod middle sleeve, the leather cup is installed between the connecting rod upper cover and the connecting rod middle sleeve and tightly contacts with the inner wall of the air cylinder, the one-way valve is installed on the cover plate, the one-way valve and the cover plate are both fixed at the top end of the air cylinder, and a chemical nickel coating is arranged on the inner wall of the air cylinder. The oiless compressor has the advantages that due to the fact that the chemical nickel coating is arranged on the inner wall of the air cylinder, the abrasion resistance of the air cylinder is enhanced, the service life of the compressor is prolonged, and the oiless compressor has the advantages of being simple in structure and convenient to use.