The developing course of introduction to bearing seal technology -

Bearing seal technology already has several years of development history, to talk about the development process of the bearing seal technology. Development trend both at home and abroad in Japan a few big bearing co. , LTD. ( Seiko, Oriental, nachi, etc. ) On behalf of the bearing seal technology development direction. Their history in the development of seal bearing assembly technology, early research depth, sealing technology is relatively mature at present. Has been developed from single sealing lip to the sealing lip, from contact seal developed non-contact seal, etc. ; Look from the product type, ball bearing, roller bearing are. Follow the international development trend in our country, also developed with a ring of deep groove ball bearings, water pump bearings, railway ( Tapered roller) Bearing cylindrical roller bearings, needle roller bearings and short yuan a few kinds of bearings, including deep groove ball bearing production is the largest, most widely used. According to the national technology recently sealed bearing to our country quality testing results, the sealed bearing structural design problem in our country is larger, the sealing effect is bad, fat leakage phenomenon more serious, users reflect the strong. Through analysis, the main reason is that the current seal design structure is unreasonable, inner ring without seal groove, coupled with the manufacturing accuracy is not high reason. Bearing seal technology in China, therefore, the future development trend is: represented by deep groove ball bearings, sealing technology experiment, finding the best sealing ring structure and the best seal life, study on sealing material, looking for wear resistance, aging resistance, high temperature resistant and corrosion resistant material, in order to improve the contact seal life, development under the condition of high temperature or in bad mood work under the conditions of sealing ring technology foundation. The main research content and target according to the current our country the status quo of the poor quality of the sealed bearing, the main research content is: first is the study of experiments, and screened the deep groove ball bearing seal structure and the development of the corresponding bearing inner ring seal groove structure, the current deep groove ball bearing seal structure upgrading. To make this kind of bearing seal performance in 2005 to catch up with the international advanced level of similar products in the late 90 s; Secondly, it is combined with the development of car industry in China, the development is suitable for in 120 - The long-term work of the high temperature of 180 ℃ high temperature sealed bearing. The third is a delegate with railway vehicle bearings taper roller bearing series in sealed structure and new. Bearing seal technology development and breakthrough in the upgrading of bearing material, stainless steel bearings now dominate in the bearing industry.