GB/T 4604.1-2012

This standard specifies the radial internal clearance values for radial rolling bearings, defining the permissible range of internal movement between the bearing rings and rolling elements. It is applied in the design, manufacturing, and quality inspection of radial bearings used in machinery such as electric motors, gearboxes, and automotive components. Engineers and procurement professionals use it to select appropriate clearance classes (e.g., C2, C0, C3) based on operating conditions like temperature, speed, and fit tolerances.