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

空间科学实验转动部件规范第2部分：润滑设计要求

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 29, 2016

Implementation date

November 1, 2016

Scope

GB/T 28878.2-2016 is the English-translated version of 空间科学实验转动部件规范第2部分：润滑设计要求.

GB/T 28878.2-2016 is the Chinese standard "Specification of the rotating component in space science experiments—Part 2: Requirements of lubrication design".

Its scope clause reads: 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. Its clauses include normative reference documents; terms and definitions.

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Document preview — GB/T 28878.2-2016

National Standard of the People's Republic of China

ICS: 49.035
Classification: V 22

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

4.1 General requirements2
4.2 Lubrication type and selection principle2
4.3 lubrication design process2
5 design requirements3
5.1 Oil lubrication design3
5.2 Solid lubrication design4
Appendix A (informative) Common use of oil lubrication characteristics and requirements6
Appendix B (Normative Appendix) Calculation of Parameters for Oil Lubrication Design8
Appendix C (informative) Solid lubricating material characteristics, bearing preload and solid lubricating bearings run11

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

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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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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