乱亲女h秽乱长久久久-日韩一区二区三区无码影院-亚洲av无码乱码精品国产-国产九九99久久99大香伊-国产裸体xxxx视频在线播放

Bearing market fish eye mixing, precision angular contact bearing selection method
7/10/2017 4:28:59 PM
       Precision angular contact ball bearings are mainly used for high-speed rotating applications such as machine tool spindles, high-speed motors, machine tool ball screws, gas turbines, centrifugal separators, etc. Bearings are required to have high precision, high speed, low temperature, low vibration and a certain service life. The support members of the high-speed electric spindle are often used in pairs, and are the key components of the high-speed electric spindle of the inner surface grinding machine.
 
       Therefore, the selection of precision angular contact ball bearings is very important. He directly affects the processing performance of machine tools. Nowadays, the bearing market is mixed, and the fish eye is mixed. It is necessary to pay more attention to the selection of precision angular contact ball bearings.


Common methods for identifying bearing quality:
 
(1) Whether the outer packaging is clear; under normal circumstances, the factory brand has its own special designer to design the outer packaging, and arrange the production facilities to pass the production and production, so the packaging is very clear from the line to the color block. Unequivocal, some imported brands have unique designs designed to protect their intellectual property.
 
(2) Whether the steel printing is clear: brand words and labels will be printed on the bearing body. The font is very small, but most of the products produced by the factory use the stamping technology, and the type is pressed before the heat treatment, so the font is small, but the recess is deep and very clear. The fonts of counterfeit products are not only blurred, but because of the rough printing technology, the fonts float on the surface, and some can even be easily erased by hand.
 
(3) Is there any noise: hold the inner sleeve of the bearing with your left hand, and turn the outer sleeve with your right hand to make it rotate to hear if it has noise. Since most of the counterfeit products are out of production conditions and completely hand-worked, it is inevitable that impurities such as sand will be incorporated into the bearing body during the production process, so that noise will be generated when rotating. This is the biggest difference between a factory brand that strictly enforces production standards and operates with machines.
 
      Wuxi No. 2 Bearing is the largest manufacturer of precision angular contact ball bearings in China. It focuses on R&D and manufacturing of precision bearings for 26 years. It mainly conducts in-depth R&D and design for machine tool bearings, electric spindle bearings, engraving machine bearings, etc. The product precision is positioned in high precision. P4, P2 grade, does not produce bearings lower than P5 grade, the service life is far better than domestic counterparts, the best choice to replace imported bearings, and strive to become the first brand of angular contact ball bearings in China, and strive to provide customers with professional technical services. Create value.

主站蜘蛛池模板: 亚洲自偷自偷在线成人网站传媒| 精品国内片67194| 国产精品国产亚洲精品看不卡| 白丝兔女郎m开腿sm调教室| 亚洲av无码乱码在线观看野外| 免费国精产品一二二三| 无码人妻精品一区二| 亚洲精品无码mv在线观看| 久久久久久a亚洲欧洲av| 无码人妻一区二区三区在线| 特级aaaaaaaaa毛片免费视频 | 亚洲乱码国产一区三区| 虎白女粉嫩尤物福利视频| 国产福利一区二区三区在线视频| 亚洲成av人片在| 国产在线观看www污污污| 两个人看的www免费视频中文| 啪啪无码人妻丰满熟妇| 97人人模人人爽人人少妇| 翘臀后进少妇大白嫩屁股| 清纯国语对白videoshdcom| 成人欧美一区二区三区黑人免费| 国产放荡对白视频在线观看| 成人h视频在线观看| 乱人伦xxxx国语对白| 永久免费av网站可以直接看的| 欧美不卡视频一区发布| 亚洲va无码专区国产乱码| 黑人巨大精品欧美一区二区免费| 日韩日韩日韩日韩日韩日韩日韩| 国产手机精品一区二区| 午夜精品久久久内射近拍高清| 色噜噜狠狠狠狠色综合久一| 收集最新中文国产中文字幕| 国产精品成熟老女人| 亚洲av超清无码不卡在线观看| 97人妻人人揉人人躁人人| 国产精品无码成人午夜电影| 色偷偷88888欧美精品久久久| 国产精品白丝av网站| 亚洲欧美日韩综合一区|