The Journal of Mechanical Engineering (JRM) is published three times a year, in April, August, and December, by the Applied Bachelor Degree Program (D4) in Mechanical Engineering, Faculty of Vocational Studies, Universitas Negeri Surabaya (UNESA). It serves as a medium of information and a forum for Development of Technology, Numerical Studies, Experimental Studies, and Applied Research in the field of Mechanical Engineering. The journal contains scientific papers, summaries of research results, literature reviews, and original critical ideas. The editorial team invites researchers, practitioners, and anyone interested in contributing articles that have not been published elsewhere. The themes of the articles include Machining Materials and Metallurgy Manufacturing Processes Mechanical Design Control Systems