This standard specifies the preferred dimensions of radial bearings. This standard does not apply to tapered roller bearings, outer spherical bearings, needle roller bearings of certain structural types, aircraft frame bearings and instrument precision bearings whose dimensions have been standardized.
GB/T 273.3-1999 history
2020GB/T 273.3-2020 Rolling bearings—Boundary dimensions,general plan—Part 3:Radial bearings
2015GB/T 273.3-2015 Rolling bearings.Boundary dimensions, general plan.Part 3:Radial bearings
1999GB/T 273.3-1999 Rolling bearings--Radial bearings--Boundary dimensions,general plan