Rolling bearings with solid lubricant type

The type of rolling bearing with solid lubricant - 2021 03 - 3 in many cases, grease and lubricating oil can not be used in such as vacuum, the extreme environment of high and low temperatures. Solid lubricant can according to the special application condition and environment of bearing show different lubrication properties, choose the most suitable solid lubricant, you first need to understand the different characteristics of the solid lubricant. A typical bearing with solid lubricant are shown in table 1. Table 1 typical bearing with solid lubricant is given in table 1 soft metal, the layered solid lubrication materials, high polymer materials and solid lubricant of crystal structure, thermal stability, friction factor, load capacity, dust and gas release performance. These data is the basis of choosing the most suitable for solid lubricant. （ 1) Soft metal soft metallic silver ( Ag） And lead ( Pb) Good lubricating film self-healing capability and low vapor pressure, therefore, can be used as high vacuum bearings, such as high bearing lubricant. In many cases, used for rolling element bearing ( Steel ball) The surface of the ion plating method or the coating method is used to cover with a thin layer of coated ( General to zero several to several microns) 。 But because the Ag has the shortcoming of easily oxidized, have to be very careful when applied in the air. Other soft metal lubricant and gold ( Au） , cadmium, Cd） , indium, 在) And so on. （ 2) Layered solid lubrication material layer lattice structure of molybdenum disulfide ( 二硫化钼) Is a well-known solid lubricant, by spraying method and the method of thermosetting coating on the cage and bearing ring. Molybdenum disulfide is mainly used for vacuum bearings, tungsten disulfide ( WS2） And graphite ( C) Sometimes used as a retainer materials ( Composite materials) , but often as high temperature bearing lubricant. （ 3) High polymer material of high polymer materials such as ptfe ( PTFE） , polyimide ( PI） Can be used in the rolling element and cage laminating, also used as a retainer materials. Because of these materials have excellent chemical resistance, good adhesion and relative performance is not affected by the environment, often used for dust environment bearing and bearing movement in atmospheric and vacuum environment again and again.