Straight cylindrical involute splines－Metric module, side fit－Part 1：Generalities

This technical specification establishes comprehensive guidelines for the side fit of involute cylindrical spur splines utilizing a metric module system. The document defines fundamental terminology, classification criteria, and general principles applicable to the design and manufacturing of these mechanical components. It outlines the framework for selecting appropriate tolerance classes and specifies the geometric relationships necessary to ensure interchangeability and proper assembly between mating spline shafts and hubs. The content covers essential aspects such as tooth profile deviations, runout limits, and fit classifications that facilitate reliable power transmission in various industrial applications. By providing a unified approach to spline dimensioning and quality control, the publication supports consistency in production processes across different engineering sectors. It serves as a reference for engineers and manufacturers to align their design practices with established international norms, ensuring compatibility and performance stability in mechanical systems involving splined connections.