The ASAHI bearing distributor in China - Nanjing nsk bearing agents 
 The ASAHI bearing distributor in China - Nanjing nsk bearing agents 
 Sealing technology 
 Technical summary 
 Rolling recent developments in both ends of the surface are equipped with appropriate seals. Its role is to protect the bearings inside the grease (oil) in use will not drain, to ensure that the bearings in the lubrication state on the one hand; the other hand, is to protect the bearing, so that the outside of the dust or harmful gases will not enter the bearing cavity to avoid bearing caused the injury. Common rubber or plastic ring, the ring of steel plate punching (or dust cover). Sealing structure is varied, the effect of sealing is not the same. Gap between the seal and the bearing, said non-contact seal, the smaller the gap, sealing the better, but allows the shaft of the speed the smaller the area; gap between the seal and the bearing, said contact seal, seal ring contact with the lip contact area is larger, the better the sealing effect, the smaller but allows the shaft speed. Sealing technology research and development applied to the different conditions of the seals, and the communion of the ring material grease, etc.. 
 Development trends at home and abroad 
 The ASAHI bearing distributor in China - Nanjing nsk bearing agents 
 Several of Japan's largest bearing company (Seiko, Japan, etc.) represents the development direction of the bearing seal technology. In the development of seal technology development direction and bearing device technology aspects of early history, depth, and sealing technology is more mature. From a single seal lip to multiple sealing lip contact seal developed a non-contact seal; from the types of products, ball bearings, roller bearings are. Follow the international trend of development in China, but also developed a ring of deep groove ball bearings, water pump bearings, railway (tapered roller) bearings, needle roller bearings, as well as a short cylindrical roller bearing several categories bearings, including deep groove ball bearing production The largest and most widespread application. According to the State Bureau of Technical Supervision recently sealed bearings on China quality inspection results of the sealed bearing structure design issues, poor sealing effect, drain the fat is more serious, reacted strongly to the user. After analysis, the main reason is that the current seal design structure is irrational, the inner ring without the seal groove, coupled with the manufacturing precision is not high. Therefore, the future development trend of China's bearing seal technology: deep groove ball bearings, sealing technology, test, looking for the best ring structure and the optimum seal gap; to carry out the study of sealing materials, looking for wear resistance, aging resistance, high temperature and corrosion-resistant materials, lay a technical foundation to improve the contact seal life, the development of high temperature conditions or hazardous atmosphere under the conditions of the ring. 
 Vibration damage to NSK-aligning ball bearings can be said is quite sensitive, peeling, creasing, rust, cracks, wear and will be reflected in the NSK-aligning ball bearing vibration measurement. So, by using a special bearing vibration measurement (frequency analyzer) to measure the size of the vibration frequency can not infer the exception of the specific situation. The measured values ??due to different conditions of use NSK-aligning ball bearings or sensor installation location, determine the criteria for judging prior to the measured value of each machine. 
 The ASAHI bearing distributor in China - Nanjing nsk bearing agents 
 We then look at the impact of temperature on imported bearings NSK-aligning ball bearings in the unusual circumstances, often with high temperature. The high temperature is also harmful to the bearing lubricant. Sometimes bearing overheating can be attributed to the lubricant in the bearing. NSK-aligning ball bearings even move more than 125 ° C temperature long-term, reduce the life of NSK-aligning ball bearings. Caused by high temperature bearing the reasons include: lack of lubrication or excessive lubrication, lubricants. Containing impurities, the load is too large, the NSK-aligning ball bearing loss ring, lack of space, and oil seals produce high friction. 
 Continuous monitoring NSK-aligning ball bearing temperature is necessary, whether it is the bearing of the measurement or other important parts. If you are under the same operating conditions, any temperature change has failed. 
 The NSK aligning ball bearing temperature regularly measured by means of the thermometer, digital thermometer, can be accurately measured NSK-aligning ball bearing temperature according to the given units of ° C or Fahrenheit display. The importance of bearing, which means that when it is damaged, can cause equipment downtime, such NSK-aligning ball bearings should preferably be the installation of temperature probes. 

 Tianjin imported bearings Sales Co., Ltd. for many years to: SKF import bearing, NSK bearing NTN imported bearings, NACHI imported bearings, KOYO, imported bearings, FAG import bearing, INA imported bearings, TIMKEN imported bearings and other well-known imported bearings sales. 
 The products involved: deep groove ball bearings, cylindrical roller bearings, tapered roller bearings, aligning ball bearings, spherical roller bearings, needle roller bearings, angular contact ball bearings, thrust ball bearings, thrust roller bearings, bearing joints, spherical bearings, linear guide series. 
 Applicable industries: iron and steel metallurgy, port machinery, petrochemical, automobile manufacturing, machine tools and paper industry. 
 Sales all over Guangdong, Guangzhou, Dongguan, Foshan, Chengdu, Shenzhen, Zhongshan, Zhuhai, Wuhan, Shenyang, Taiyuan, Urumqi across the country. 
 Relying on the coastal geographical advantage of Tianjin Port, with the price advantage and quality advantage of the company's products, has developed into a considerable scale bearing trade company. Has its own bonded warehouse in Tianjin Port also won the trust of our customers and support. 

 Tel) 86-022-87887680 (Gujing Li) 
 QQ 1945759772 
 Web site: http://www.sjrxzc.com 


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 The ASAHI bearing distributor in China - Nanjing nsk bearing agents