Plastic in the application of the rolling bearing

Rolling bearing is an important and indispensable parts in the mechanical transmission, it to improve the transmission efficiency and reduce energy consumption plays an irreplaceable role. In modern rolling bearing technology development process, to improve the bearing capacity, the optimization design, using new materials, new technology. Plastic, especially engineering plastics and special engineering plastics has been increasingly showing them the superiority and the importance of in the bearing industry. Plastic proportion of small, wear resistance, corrosion resistance, radiation resistance, toughness, good anti-seismic, embedded foreign bodies buried solid, and can be targeted according to the needs of design and use of modified to improve the performance of its corresponding, processing is convenient, direct injection molding complex structures, improve the flexibility and freedom of design, and all this for the application of plastics in the rolling bearing provides technical and economic feasibility. Plastic profile in the application of rolling bearing bearing made of thermosetting resin which for the first time since 1930, since the market, all kinds of polymer in bearing field and is given priority to with polymer mixture applications continue to increase, application range is continuously expanding. Plastic used in bearing frame after the second world war, the Swedish SKF bearing company use PA66 successfully made a '0' class bearing plastic cage; Iron, Ken bearing companies in the United States in the 70 s generation of automobile front wheel spindle taper bearing adopts PA66 cage has carried on the system of test and research, more than 160000 km road test, nylon maintains a good condition, has proved its performance is superior to the steel cage life. Plastic cage was the most outstanding is Germany. SKF company in the 1980 s, has 70% of cylindrical roller bearing and 80% of a new generation of cylindrical roller bearing are adopted plastic cage; FAG bearing company in its more than 50 sets of bearings for each car in the vast majority of the plastic cage, 'E' type symmetric spherical roller bearings ( D≤320mm) 100% of PA66 / GF cage, roller extension number, so that the bearing capacity increased by 7% For - 37%, working temperature 60 - +120℃。 SKF in high speed, high temperature, chemical erosion, has been widely used PEEK/GF. In order to meet the requirements of automobile applications extremely harsh, SKF engineers in the design of deep groove ball bearing began to switch to VICTREXPEEK high-performance polymeric material application in China, such as plastic cage started in the mid - 1960 - s. In the 1980 s, all kinds of plastic cage bearing structure in foreign countries under the influence of the rise and widely used, there are many domestic units carefully carry out the research, development and application of plastic cage, and in the military bearing and obtain a better application in some special bearings. In the motor bearings, rolling mill bearings, refrigerator bearings, linear motion bearings, heavy large bearings, etc. , plastic cage also has been applied gradually. 所在