This standard specifies the external dimensions of double-row cylindrical roller bearings whose external dimensions conform to GB273.3 "Outline Dimensions of Rolling Bearings and Radial Bearings". This standard applies to double row cylindrical roller bearings.
GB/T 285-1994 history
2013GB/T 285-2013 Rolling bearings.Double row cylindrical roller bearings.Boundary dimensions
1994GB/T 285-1994 Rolling bearings--Double row cylindrical roller bearings--Boundary dimensions