An unrivalled compendium on the development of gear units. This book contains a complete presentation of all branches essential for the development of gear units, in particular that of cylindrical gears. The main subareas are geometry, load capacity, gear noise, design process, quality assurance, materials, heat treatment, and manufacturing. Further topics covered are material selection, strength values, the creation of drawings as well as practical design examples. The used technical terms and standards are based on the internationally valid and applied ISO standards. This book provides the basis for practical calculations and detailed analyses. It addresses graduate engineers in research, development and manufacturing departments as well as students and postgraduates in mechanical and plant engineering, as well as in automotive, aerospace and marine engineering.