This textbook is intended for students of 60720700- Technological machines and equipment (mechanical engineering, metalworking) and other bachelors of higher education, universities, which can be used by masters, college students, technologists and designers of manufacturing enterprises. The textbook was considered at the meeting of the Council of NamECI No. 29 on October 29, 2021 and recommended to the Coordinating Council of higher and secondary special, vocational education and training associations. Recommended by Namangan Engineering-Construction Institute as a textbook for students of 60720700-Technological machines and equipment (mechanical engineering, metalworking) and other fields of mechanical engineering.