Oil injected screw compressors are widely used in various industries, including cement industries, to produce compressed air. Considering the high price and sensitivity of this equipment's performance, its reconstruction and supply of spare parts has a high technical and economic justification. In addition to the reconstruction of the screws, the reconstruction of the main cylinder and structural components of the compressor is done. Soon, with the improvement of the machine for the production of screws, the production of compressor screws will be carried out.