Application of plastic in rolling bearings (1)

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Application of plastic in rolling bearings (1)

Source: China Bearing Network Time: 2013-07-30
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Rolling bearings are important parts of mechanical transmission that are not short; it is about improving transmission power; reducing energy consumption can not replace the effect.
In the development of modern rolling bearing technology; in order to improve the bearing capacity of the bearing; optimize its depiction; select new materials and new technology. Plastics; especially engineering plastics and special engineering plastics have increasingly shown their superiority in the bearing profession. And importance.
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The use of plastics in rolling bearings has been summarized since the first introduction of bearings made of thermosetting resins in 1930; the use of various polymers and polymer-based mixtures in the bearing category has been continuously added;
Plastics were used in the bearing brackets after the Second World War; Sweden SKF Bearing Company successfully produced the "0" type bearing plastic holder with PA66, the 70th generation of the American Timken Bearing Company on the front wheel spindle tapered bearings of the automobile The experiment and discussion of the system were carried out with the PA66 sticking frame; the driving experiment was more than 160,000 km; the nylon sticking frame was outstanding and non-destructive; it proved that its functional life is better than that of steel.
The most outstanding use of plastic holders is Germany. SKF company in the 1980s; 70% cylindrical roller bearings and 80% of new generation cylindrical roller bearings have used plastic holders, FAG Bearing Company in it for each Most of the more than 50 sets of bearings supplied by the car use the plastic support frame; the "E" type spherical spherical roller bearing (D≤320mm) 100% selects the PA66/GF support frame; the number of rollers is increased; thus the bearing The load capacity can be improved by 7%-37%; the operating temperature is -60-+120 °C. SKF company has high speed, high temperature; chemical corrosion demand; PEEK/GF has been widely used.
In order to satisfy the extremely demanding application requirements of the automotive industry, SKF engineers began to use high-performance polymerization materials such as VICTREX PEEK in the description of deep-groove ball bearings. China used plastics to stand in the mid-1960s. The plastic support frames of various bearing layouts in foreign countries are under the influence of widespread use; many units in China have also carried out research and development and operation of plastic support frames; and obtained them in military bearings and some special bearings. Good use. In addition, in motor bearings, rolling mill bearings, freezer bearings, linear motion bearings, major bearings, etc.; plastic support frame is gradually being used.
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