Otopro Journal is published twice a year, namely May and November by the Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Surabaya, as a media of information and a forum for the study of mechanical engineering. Contains scientific papers, summaries of research results, literature reviews and original critical ideas. The editor invited researchers, practitioners, and anyone interested in contributing writings that had never been published in other media, writing themes included:

• Machining
• Energy Conversion
• Materials and Metallurgy
• Manufacturing
• Mechanical Design
• Automotive Engineering