This standard specifies the external dimensions of single-row tapered roller bearings whose external dimensions conform to GB 273.1 "Outline Dimensions of Rolling Bearings and Tapered Roller Bearings". This standard applies to single row tapered roller bearings.
GB/T 297-1994 history
2015GB/T 297-2015 Rolling bearings.Tapered roller bearings.Boundary dimensions
1994GB/T 297-1994 Rolling bearings--Tapered roller bearings--Boundary dimensions