GB/T 3142-1982
AbolishedLubricants--Determination of load-carrying capacity (four balls method)
润滑剂承载能力测定法 (四球法)
Application Summary AI generated
This standard specifies the four-ball method for determining the load-carrying capacity of lubricants, including their anti-wear and extreme pressure properties. It is applied in the petroleum industry for testing lubricating oils and greases used in high-load mechanical systems, such as gearboxes and bearings. The method is critical for quality control and formulation development to ensure lubricants can prevent seizure and wear under severe operating conditions.
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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