Precision bearings according to ISO grading standards are divided into: P0, P6, P5, P4, P2. Rank higher in turn, where P0 is the general accuracy, other grades are precision level. Of course, different classification standards, different types of bearings, their classification method somewhat different, but the meaning is to the. The use of performance requirements of precision bearings rotating body with high runout accuracy, high-speed rotation and small changes in friction and friction.
2013年8月17日星期六
China bearing test machine investment advisory report
Current global economic recession situation, the Chinese government has adopted a proactive fiscal policy and moderately loose monetary policy to expand investment and stimulating domestic demand. In the new situation, how to capture investment and market access opportunities, how to go in a crisis better and more stable? China bearing testing machine market investment advisory report closely bearing testing machine enterprise market, market, industrial chain, competition policy and other comprehensive information. This report describes in detail the market is currently bearing testing machine operating environment, focusing on research and analysis and forecasting its market prospects and the short-and long-term changes in supply and demand trends in the industry for the current macroeconomic situation facing the development of the opportunities and threats presented our slewing bearing testing machine market development investment and strategic recommendationsExpert appraisal committee that workers Ming Electrical Equipment Co., Ltd. Luoyang and Xi'an Jiaotong University to complete aircraft engine bearings cyclical dynamic loading test machine project:
1, for large and small aircraft engine test requirements of different spindle bearings were developed bearing diameter of 15-30mm ,30-80mm ,80-180mm three test machines. Testing machine with spindle speed transmission, hydraulic loading serve to achieve a cyclical dynamic precision bearing load, using electromagnetic induction heating can effectively improve the rate of heating oil to meet the requirements of aircraft engine bearing test.
2, developed a vibration spectrum detection device, the preparation of vibration demodulation analysis and control software, failure to establish a bearing life estimation model that can effectively detect bearing failure time.
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