What is four point contact ball bearing: a set of four point contact ball bearing release bearing bears two-way axial load. The inner and outer ring raceways of contact ball bearing are peach shaped cross-section load. When the radial load is used, the steel ball point contact axial load acts. The steel ball point contact bears two-way axial load. The bearing bears moment load and has the function of single row contact ball bearing. The bearing forms point contact to ensure normal operation China's entry into WTO is not only a challenge, but also an opportunity. Experts pointed out that we should strengthen the research and development of CNC machine tools in China and speed up the development of universal CNC machine tools. Random talk on the service competition of China's machine tool manufacturing industry, the current situation and Prospect of China's milling machine and processing * market, the technical level and development direction of lathes at home and abroad, the production of processing * in the world Demand and development trend development trend of machine tools at home and abroad development trend of world CNC system development trend of cutting technology and CNC machine tools
The four point contact ball bearing is a separate bearing, which is a set of angular contact ball bearings that can bear two-way axial load. The inner and outer race raceways are peach shaped sections. Under no load and pure radial load, the steel ball and the ferrule are in four-point contact. Under pure axial load, the steel ball and the ferrule are in two-point contact, which can bear two-way axial load. The bearing can also bear moment load and has the functions of single row and double row angular contact ball bearings. This kind of bearing can work normally only when it forms two-point contact. However, it is generally applicable to the situation of two-point contact under pure axial load or synthetic load with large axial load. This bearing has high limit speed and is suitable for high-speed operation.
