標(biāo)準(zhǔn)編號(hào):	GB/T 3142-1982
中文名稱:	潤(rùn)滑劑承載能力測(cè)定法(四球法)
英文名稱:	Lubricants;Determination of load carrying capacity(four balls method)
中標(biāo)分類:	E34    潤(rùn)滑油
行業(yè)分類:	GB    國(guó)家標(biāo)準(zhǔn)
ICS分類:	75.100 75.100    潤(rùn)滑劑、工業(yè)油及相關(guān)產(chǎn)品 75.100
發(fā)布機(jī)構(gòu):	國(guó)家標(biāo)準(zhǔn)總局
發(fā)布日期:	1982-7-20
實(shí)施日期:	1983-3-1
標(biāo)準(zhǔn)狀態(tài):	superseded
被新標(biāo)準(zhǔn)替代:	GB/T 3142-2019 潤(rùn)滑劑承載能力的測(cè)定 四球法
被替代日期:	2019-10-1
替代舊標(biāo)準(zhǔn):	SY 2665-1977
翻譯語言:	英文
文件格式:	PDF
中文字符數(shù):	10000 字
翻譯價(jià)格(元):	700.0
交付時(shí)間:	付款后 1 個(gè)工作日

1 Summary of Test Method The four steel balls in the four-ball tester are arranged as equilateral tetrahedron. The upper ball rotates under 1400~1500shift/min. The three balls at the lower place shall be fixed together with an oil box, in this way, the steel balls are applied with load from bottom to top by means of lever or hydraulic system. During the test process, the contact points of four steel balls shall be immersed in the lubricant. The wear scar diameter of all balls in the oil box shall be measured after the test which lasts 10 seconds for each. The test shall be repeated according to specified procedures till the assessment index of load-carrying capacity of representative lubricant is worked out.

Contents 1 Summary of Test Method 2 Definitions 3 Apparatus and Materials 4 Reagents 5 Preparation Works 6 Test Procedures 7 Calculation and Report 8 Precision Appendix A Accuracy Inspection for Four-ball Tester (Additional) Appendix B Determination Method Example for Load-carrying Capacity of Lubricant (Informative) Additional Explanation