This standard specifies the technical specification of powder metallurgy bearing specified in GB/T 18323.
This standard applies to iron-based and copper-based bearings for powder metallurgy.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 223 (All parts) Methods for chemical analysis of iron, steel and alloy
GB 443-1989 Lubricating oils for total loss systems L-AN
GB/T 1800.1-2009 Geometrical product specifications (GPS) - Limits and fits - Part 1: Bases of tolerances, deviations and fits
GB/T 1800.2-2009 Geometrical product specifications (GPS) limits and fits - Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts
GB/T 1958-2004 Geometrical product specifications (GPS) - Geometrical tolerance - Verification
GB/T 5163-2006 Sintered metal materials, excluding hardmetals - Permeable sintered metal materials - Determination of density, oil content, and open porosity
GB/T 6804-2008 Sintered metal bushes - Determination of radial crushing strength
GB/T 9097.1-2002 Sintered metal materials excluding hardmetals - Determination of apparent hardness - Part 1: Materials of essentially uniform section hardness
GB/T 10425-2002 Sintered metal friction materials - Determination of apparent hardness
GB/T 18323-2001 Plain bearings - Sintered bushes - Dimensions and tolerances
3 Technical requirements
3.1 Bearing materials are classified according to alloy composition and density in accordance with the requirements specified in Table 1.
