This standard specifies the characteristics, types, external dimensions, tolerances and clearances, size groupings, torque definitions, test conditions and bearing yield limit of precision bearings for instruments with tolerance classes 5A and 4A (hereinafter referred to as bearings).
GB/T 5800-2003 history
2012GB/T 5800.1-2012 Rolling bearings.Instrument precision bearings.Part 1:Boundary dimensions,tolerances and characteristics of metric series bearings
2003GB/T 5800-2003 Rolling bearings--Instrument precision bearings