GB/T 28278.2-2012

This standard provides the characteristic values required for calculating the performance of oil-lubricated hydrostatic plain journal bearings that operate without drainage grooves under steady-state conditions. It is applied in the design and analysis of high-precision rotating machinery, such as machine tool spindles, turbines, and heavy-duty pumps, where engineers need to determine load capacity, oil film thickness, and power loss. The standard ensures consistent calculation methods for bearing performance across mechanical engineering and industrial equipment manufacturing.