Germany IVE Bearing

Main dimensions and basic designation methods of rolling bearings

For the main dimensions of bearings, the International Organization for Standardization (ISO) has formulated a unified international standard [ISO15, ISO355, ISO104] to ensure international interchangeability and economy in production, which respectively stipulates the main overall dimensions of radial bearings, tapered rollers, and thrust bearings, that is, serializing and standardizing the inner diameter, outer diameter width, and chamfer dimensions of bearings, Our country's standards also adopt the provisions of ISO standards, with corresponding standard numbers of GB273.3--, GB273.1--, GB273.1--, and assembly chamfering standard of GB274--

The standardization of main dimensions refers to the overall dimensions of bearings, namely inner diameter, outer diameter, width or height, and chamfer dimensions. For internal dimensions, there is no regulation in principle.