The traction drive is making use of shearing stress that is formed by the traction oil film in contact area to transmit motion and power
so the quality of the oil’s traction characteristic directly influence the efficiency of traction drive
and there are more researches on characteristics of various oil.The traction characteristic of transmission oil of No.8 under face-contact form is studied by using the test apparatus of HZS-1 hydrodynamic journal bearing.The experiment result is processed by using Matlab software
and the conclusion is got by analysis and compare.