GB/T 28878.2-2016 English PDF

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GB/T 28878.2-2016: Specification of the rotating component in space science experiments -- Part 2: Requirements of lubrication design
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Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 28878.2-2016	319	Add to Cart	3 days	Specification of the rotating component in space science experiments -- Part 2: Requirements of lubrication design	Valid

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Basic data

Standard ID: GB/T 28878.2-2016 (GB/T28878.2-2016)
Description (Translated English): Specification of the rotating component in space science experiments -- Part 2: Requirements of lubrication design
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: V22
Word Count Estimation: 16,149
Date of Issue: 2016-08-29
Date of Implementation: 2016-11-01
Regulation (derived from): National Standard Announcement 2016 No.14
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 28878.2-2016: Specification of the rotating component in space science experiments -- Part 2: Requirements of lubrication design

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Specification for rotating parts for space science experiments - Part 2. Requirements for lubrication design) ICS 49.035 V22 National Standards of People's Republic of China Specification for rotating parts of space science experiment Part 2. Lubrication design requirements Part 2. Requirementsoflubricationdesign 2016-08-29 released 2016-11-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released Directory Preface III 1 Scope 1 2 normative reference document 1 3 Terms and definitions 1 Design General 4.1 General requirements 2 4.2 Lubrication type and selection principle 2 4.3 lubrication design process 2 5 design requirements 3 5.1 Oil lubrication design 3 5.2 Solid lubrication design 4 Design Verification 5 Appendix A (informative) Common use of oil lubrication characteristics and requirements 6 Appendix B (Normative Appendix) Calculation of Parameters for Oil Lubrication Design 8 Appendix C (informative) Solid lubricating material characteristics, bearing preload and solid lubricating bearings run 11 Reference 13

Foreword

GB/T 28878 "space science experimental rotating parts specification" is divided into the following 10 parts. - Part 1. Design principles; - Part 2. Lubrication design requirements; - Part 3. Rolling bearing acceptance; - Part 4. acceptance of lubricants; - Part 5. Motor acceptance; - Part 6. Performance testing; - Part 7. Reliability testing; Part 8. Assembly; - Part 9. Delivery; - Part 10. Storage reinspection. This part is part 2 of GB/T 28878. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part is headed by the National Committee for the Standardization of Space Science and Its Application (SAC/TC312). This part of the drafting unit. Institute of Technical Physics, Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences. This part of the main drafters. Jia Jianjun, Jiang Zijing, Weng Lijun, Cui Weixin, Liu Xiaohua, Wang Chenfei, Xie Xie. Specification for rotating parts of space science experiment Part 2. Lubrication design requirements

1 Scope

This part of GB/T 28878 specifies the requirements for lubrication design and verification of rolling bearings for rotating parts of space science experimental installations. This part is applicable to the lubrication design of rolling bearing of rotating parts of space science experimental device. Other payload and spacecraft platforms The lubrication design of the rotating parts can be used. Note. In this section, in the absence of ambiguity, the space science experimental device rotating parts referred to as rotating parts.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. Specification for rotating parts of space science experiment - Part 1. Design principles GB/T 28878.1-2012 GB/T 28878.7-2016 Specification for rotating parts of space science experiment - Part 7. Reliability test Specification for GJB2375 Space Precision Bearing Lubricating Oil Specification for GJB3032 sputtering molybdenum disulfide - based self - lubricating solid films

3 terms and definitions

GB/T 28878.1 Definitions and the following terms and definitions apply to this document. 3.1 Lubrication lubrication Technical Measures to Improve Friction State of Equipment Friction Pair. Note. lubrication can reduce the friction resistance, reduce wear and energy consumption, to ensure the normal work of equipment to extend the service life of equipment. 3.2 Elastic hydrodynamic lubrication elasto-hydrodynamiclubrication; EHL Elastic flow lubrication Friction interface for the point, line contact, under a certain load, speed and temperature conditions, by the viscous fluid dynamic pressure and contact surface elastic deformation The effect of the double impact of the lubrication state. Note. At the end of the 1940s, scientists combined the classic Reynolds fluid lubrication theory of the 1880s with the Herts elastic contact theory The approximate solution of elastic hydrodynamic lubrication is obtained, which lays the theoretical foundation of elastic fluid lubrication. Since the 1960s through the computer and the number The results show that the calculation formula of oil film thickness is suitable for engineering design. Theory and Application of Elastohydrodynamic Lubrication For the modern tribology of one of the main research areas, is also continuing to develop and improve. 3.3 Lubricating oil film Lubricants in the friction between the formation of a certain thickness of the oil layer. Note. The lubricating oil is glued to the bearing during rotation, and an oil wedge is created at the contact of the ball with the bearing channel. As the bearing rotates to form a lubricating oil film. Lubricant film thickness ......

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