博文

目前显示的是标签为“bearing import”的博文

How to choose ball screw bearings? zysbearing

 Ball screw bearings adapt to various purposes for bai, and du provides a wide range of standardized products. Widely used in machine tools, the ball circulation dao methods include circulating duct type, circulator type and end cap type. Preloading methods include positioning preloading (double nut method, position preloading method) and constant pressure preloading. The appropriate type can be selected according to the purpose. The screw has high-precision grinding precision ball screw (precision is divided into 6 grades from CO-C7) and cold-rolled ball screw bearing formed by high-precision cold rolling (precision is divided into 3 from C7-C10) Levels). In addition, in order to cope with the urgent need for delivery by users, there are finished products that have been processed on the end of the shaft, semi-finished products and cold rolled ball screw bearings that can be freely processed on the end of the shaft. As the peripheral parts of this bearing, the screw support unit, n...

vibration measuring instrument

 Bearing vibration measuring instrument is generally composed of driving device, sensor, amplifier, filter, measurement display and self-calibration system. The driving device drives the inner ring and rolling elements of the bearing to be tested. The radial vibration acceleration signal generated by the bearing at this time is picked up by a piezoelectric acceleration sensor and converted into a charge signal to be amplified by an amplifier and filtered by a band-pass filter It is sent to the measurement display circuit, and the acceleration decibel value is displayed through the RMS meter and the PEAK meter, and the performance of the bearing is characterized through various forms such as oscilloscope and loudspeaker. http://www.zysbearing.com/bearing-parts-measuring-instruments/s95-single-ball-vibration-measuring-instrument.html

China Bearing Import and Export Analysis from January to June in 2020

  1.  Bearing export Overall situation of bearing exports  in China In June 2020, bearing exports  in China  earned US$353 million, a month-on-month decrease of 2.19%, a year-on-year decrease of 23.27% from June last year . Compared with the previous month's year-on-year drop (-14.8%) , it expanded by 8.47%. The export volume of bearings is 422 million sets, a month-on-month increase of 4.77%, and a year-on-year decrease of 16.68% from last June. Compared with the previous month's year-on-year drop (-15.1%) , it expanded by 1.58%.  As of June 2020, a total...