GB/T 3142-2019
ActiveStandard test method for determination of load-carrying capacity of lubricants—Four-ball method
润滑剂承载能力的测定 四球法
Application Summary AI generated
This standard specifies the four-ball test method for determining the load-carrying capacity of lubricants, including the maximum non-seizure load (PB), weld load (PD), and the comprehensive wear index (ZMZ). It is primarily applied in the petroleum and lubricant industries for quality control, product development, and performance evaluation of greases and oils used in high-pressure or boundary lubrication conditions. The test is commonly conducted in laboratories to assess how well a lubricant prevents wear and seizure under extreme pressure, such as in gears, bearings, and metalworking fluids.
Related Standards
GB/T 7631.2-2003
Lubricants，industrial oils and related products(class L)--Classification--Part 2: Family H(Hydraulic systems)
GB/T 7631.17-2003
Lubricants，industrial oils and related products(class L)--Classification--Part 17:Family E(Internal combustion engine oils)
GB/T 12579-2002
Determination of foaming characteristics of lubricating oils
GB/T 2433-2001
Petroleum products--Lubricatingoils and additives--Determination of sulphated ash
GB/T 7631.16-1999
Lubricants and related products(class L)--Classification--Part 16:Family P (Pneumatic tools)
GB/T 12583-1998
Standard test method for measurement of extreme-pressure properties of lubricating fluids(four-ball method)
GB/T 7631.15-1998
Lubricants and related products(class L)--Classification--Part 15:Family N (Insulating liquids)
GB/T 7631.14-1998
Lubricants and related products(class L)--Classification--Part 14:Family U (Heat treatment)
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