Standard No.:	GJB 269B-2012
English Name:	General specifications for aerospace rolling bearings
Chinese Name:	航空滚动轴承通用规范
Professional Classification:	GJB    Professional Standard - Military
Issued on:	2012-07-24
Implemented on:	2012-9-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	14000 words
Translation Price(USD):	500.0
Delivery:	via email in 1 business day

The general specification for aerospace rolling bearings 1 Scope This specification specifies the technical requirements, inspection methods, quality assurance, and delivery preparation for aerospace rolling bearings (hereinafter referred to as "bearings"). This specification is applicable to the research and development, production, inspection, and acceptance of bearings and their commercial parts. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this specification. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this specification. However parties using this specification are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. GB/T 307.1-2005 Rolling bearings - Radial bearings - Tolerances GB/T 307.2-2005 Rolling bearings - Measuring and gauging principles and methods GB/T 307.3-2005 Rolling bearings - General technical regulations GB/T 307.4-2002 Rolling bearings - Thrust bearings - Tolerances GB/T 308-2002 Rolling bearings - Steel balls GB/T 309-2000 Rolling bearings - Needle rollers GB/T 4661-2002 Rolling bearings - Cylindrical rollers GB/T 8597-2003 Rolling bearings - Rust proof packaging GB/T 9163-2001 Spherical plain bearings - Radial spherical plain bearings GJB 1765-1993 Markings for package of military supplies GJB 5293-2004 Technical requirements of dynamic balance for cage of spindle bearing in air engine JB/T 1255-2001 Specification for heat-treatment of rolling bearing parts made from high carbon chromium steel JB/T 1460-2002 Specifications for heat-treatment of rolling bearing parts made from high carbon chromium stainless steel JB/T 2850-1993 Specifications for heat-treatment of rolling bearing parts made from Cr4Mo4V elevated-temperature bearing steel JB/T 3573-2004 Rolling bearings - Methods for the measurement of radial internal clearance JB/T 3574-1997 Rolling bearings - Marking for products JB/T 5313-2001 Rolling bearings - Measuring methods for vibration (velocity) JB/T 5314-2002 Rolling bearings - Measuring methods for vibration (acceleration) JB/T 6641-1993 Rolling bearings - Residual magnetism and its assessment method JB/T 7361-1994 Rolling bearings - Test method for hardness of parts JB/T 7752-2005 Rolling Bearings - Sealed deep groove ball bearings - Specifications JB/T 8879-2001 Spherical plain bearings - General specifications JB/T 8921-1999 Rolling bearings and commercial parts - Inspection rules ZJB J10 003-1987 Technical conditions for plating quality inspection of silver-plated cages for military bearings 3 Requirements 3.1 Materials 3.1.1 Bearing rings and rolling elements developed and manufactured to this specification shall be made of Group A bearing steel, stainless steel or high-temperature bearing steel. Other materials may be used if specially required by the orderer. 3.1.2 Materials selected for bearing parts (including commercial parts) shall comply with the provisions of the product drawing and Annex A. 3.1.3 Upon receipt by the manufacturer's plant, materials shall be re-inspected in accordance with the relevant material standards and shall not be put into production until found conforming. 3.2 Product drawing 3.2.1 The product drawing shall specify requirements for material, geometric dimension tolerances, clearance, surface roughness, heat treatment and hardness, etc. It may also specify other special supplementary technical requirements for certain bearings. 3.2.2 After bearing qualification, any changes to the product drawing that affect operational performance or fitting dimensions shall be negotiated and agreed upon between the manufacturer and the orderer, and the consent of the orderer's representative shall be obtained; for general changes, the manufacturer shall notify the orderer's representative of the change results. 3.2.3 If required by the orderer, the manufacturer shall provide the product drawing to the orderer.

Foreword II 1 Scope 2 Normative references 3 Requirements 3.1 Materials 3.2 Product drawing 3.3 Heat treatment and hardness 3.4 Appearance quality 3.5 Assembled bearing 3.6 Capped bearing 3.7 Using life 3.8 Marking of bearings and commercial parts 3.9 Supplementary technical requirements for bearing groups 4 Quality assurance requirements 4.1 Inspection classification 4.2 Inspection conditions 4.3 Qualification inspection 4.4 Quality consistency inspection 4.5 Re-inspection 4.6 Packaging inspection 4.7 Inspection methods 5 Delivery preparation 5.1 Protective packaging 5.2 Packaging and transportation 5.3 Packaging marking 6 Instructions 6.1 Intended use 6.2 Contents to be specified in the ordering document 6.3 Terms and definitions 6.4 Others Annex A (Informative) Materials for aerospace bearings and relevant material standards Annex B (Normative) Tolerances for Class E tapered roller bearings Annex C (Normative) Bearing clearance standards Annex D (Informative) Bearing designation methods