Experimental Research On Tribological Properties Of Jewel Bearing And Oil-Air Lubrication Of High Speed Motorized Spindle

The jewel bearing is widely applied in instrument because of its high hardness, high strength, good corrosive resistance, low density and excellent mechanical properties in high temperature. Recently, it is applied in high speed area also. By means of a test apparatus developed specially, experimental research on tribological properties of jewel bearing has been studied.A series of friction and wear experiments were performed under different conditions of PV values and surface treatment methods. The experiment results show adding 0.8wt% T306 additive in base oil and using Diamond-like Carbon surface treatment on the shaft, it could reduce the wear weight and prolong its lifetime.A series of experimental researches on tribological properties for ammeter oils were studied and the optimal performance oil was obtained in order to carry out a functional experiment in Hangzhou Huali Co.Ltd. Other influencing factors on lifetime of ammeter were obtained.A series of experiments on oil air lubrication for the high speed motorized spindle have been studied. At speed of 10000rpm, by means of orthogonal method, the experimental studies on the parameters of oil-air lubrication such as the viscosity of lubricating oil, the quantity of oil, the pressure of oil-air were measured. The relation of every kind of the oil-air parameters affecting on the temperature arising of the bearing was obtained. At speed of 20000rpm, the experimental studies on the same viscosity of lubricating oil were studied.