GB/T 2889.3-2020 in English

Standard Overview and Technical Background

GB/T 2889.3-2020, as an important component of the sliding bearing terminology system, is equivalent to the ISO 43783:2017 international standard and establishes the terminology standardization system in the field of sliding bearing lubrication in my country for the first time. This standard aims at the confusion of terminology in the development of lubrication technology and systematically standardizes 136 professional terms related to sliding bearing lubrication.

Analysis of the core terminology system

Classification of lubrication methods

Comparison of lubrication mechanisms

Lubricant Technical Specifications

Additive Functional System

• Extreme Pressure Additives: Sulfur/Phosphorus compounds, forming chemical reaction films at high temperatures
• Viscosity Index Improvers: High molecular polymers, improving temperature-viscosity characteristics
• Antioxidants: Amine/Phenolic compounds, delaying oil oxidation

Key Performance Indicators

Standard implementation suggestions

1. Lubrication classification code should be clearly defined during the design phase, such as fluid dynamic lubrication marked with HD
2. Lubricant selection needs to match temperature viscosity index and pressure viscosity index working condition requirements
3. Maintenance procedures should refer to standard terminology to describe lubrication status

Technology evolution trend

This standard reflects the three major development directions of lubrication technology: ①Application of nano-additives ②Development of biodegradable lubricants ③Intelligent lubrication status monitoring. The latest research shows that graphene additives can reduce the friction coefficient of boundary lubrication by 40%.