The longitudinal method of centerless grinding, in addition to high productivity, is characterized by high processing accuracy. However, its use is quite limited in current production systems. The lack of definitively approved stages of equipment commissioning and control of the implementation of a technological operation is one of the main factors affecting the scope of application. This article presents proposals for the structural classification of longitudinal centerless grinding. These proposals include the grouping of procedures for individual stages of technological support based on the criterion of uniformity of design procedures. The developed standardized models allow the sequential formation of groups of processing schemes taking into account specific production conditions. Conclusions on the classification of processing methods for design procedures for determining the optimal technological modes of longitudinal centerless grinding operations are presented.