This section specifies the dimensions of single row tapered roller bearings and their components. The tolerance of tapered roller bearings is specified in GB/T 307.1-1994, and the maximum value of the chamfer size is specified in GB/T 274-2000.
GB/T 273.1-2003 history
2011GB/T 273.1-2011 Rolling bearings.Boundary dimensions general plan.Part 1:Tapered roller bearings
2003GB/T 273.1-2003 Rolling bearings--Tapered roller bearing--Plan of boundary dimensions