Standard No.:	GB/T 2688-2012
English Name:	Plain bearing—Technical specification of powder metallurgy bearing
Chinese Name:	滑动轴承 粉末冶金轴承技术条件
Chinese Classification:	J12    Sliding bearing
Professional Classification:	GB    National Standard
ICS Classification:	21.100.10 21.100.10    Plain bearings 21.100.10
Source Content Issued by:	AQSIQ;SAC
Issued on:	2012-5-11
Implemented on:	2012-12-1
Status:	valid
Superseding:	GB/T 2688-1981 Powder metallurgy plain bearing;Technical requirements
Target Language:	English
File Format:	PDF
Word Count:	6000 words
Translation Price(USD):	150.0
Delivery:	via email in 1 business day

Flat Head Riveted Nuts 1 Scope 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.  

Foreword i 1 Scope 2 Normative references 3 Technical requirements 4 Acceptance rules 5 Packaging and marking Annex A (Normative) Processing, installation, use and maintenance of the bearing