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"Spherical Roller Bearing"
Blogbearing cage or rolling fragmentation. |
10-09 |
Bearing clearance is defined as a case of a fixed ring, another ring in the radial or axial flow by the maximum amount, the clearance is divided into radial clearance and axial clearance two kinds . Move needle bearing assembly, the clearance is not too big, not too small. Clearance is too large, it will cause the load to move the body to withstand the reduced number of individual load increases to move the body, thereby reducing the accuracy of rotation of the bearing, reducing the service life; clearance is too small, the friction will increase, the heat generated increases, increased wear, also can reduce bearing life. Therefore, the bearing assembly must strictly control and adjust the clearance.ball bearing temperature causes are: oil quality does not meet the requirements or deterioration, lubricant viscosity is too high; institutions assembly too tight (lack of space); bearing assembly tight; bearing ring on the shaft or housing rotation; overload large; big ball bearin cage or rolling fragmentation.1), the shaft and housing bore roundness and the vertical shoulder block bearing according to the appropriate precision requirements.2), it is necessary to accurately calculate the rotating rings fit the amount of interference, but also suitable for accurate calculation of the amount of the fixed ring. Rotating rings blanch the amount of interference to the extent possible should also get smaller. As long as the operating temperature and ensure the effect of thermal expansion, and the maximum speed of the centrifugal force, resulting in a tight fit so as not to creep or sliding surfaces. Fixed ring size according to the work load and bearing size, select small clearance fit or interference fit, too loose or too tight is not conducive to maintaining the original shape exactly.
First, to maintain the bearing and its surroundings clean |
09-27 |
Cause damage to the bearingMost of the spherical roller damage for many reasons - beyond the original estimate of the load , non- effective seal , tight with resulting deep groove ball clearance is too small so . Any one of these factors are factors that damage type has its unique and special damage will leave traces . Therefore, to view damaged shaft bearing, in most cases you can find its possible cause , generally speaking, a third of the bearing damage due to fatigue damage , arising out of the other one-third of poor lubrication , other third contaminants into the bearing arising out of improper handling or installation :First, to maintain the bearing and its surroundings cleanEven tiny invisible dust into the bearing , will increase the bearing wear , vibration and noise.Second, use the installation should carefullyDoes not allow a strong punch , does not allow a direct hit with a hammer bearing , does not allow pass through the rolling pressure .Third, the use of appropriate and accurate installation toolMake use of special tools, try to avoid using fabric and staple fibers and the like . Fourth, to prevent corrosion of bearings direct hands to take bearings , to fully wash hands sweat , and coated with high-quality mineral oil before , during the rainy season and summer with particular attention to rust.In some special operating conditions , the bearings can get a longer life of the conventional calculation , especially in the case of light load . These special operating condition is , when the rolling surface ( track and rolling member ) by a lubricant film to effectively separate and restrictions may result in contamination of surface damage . In fact, under ideal conditions , the so-called permanent bearing life is possible.Bearing lifeThe life of rolling bearings in revolutions ( or under certain speed number of hours worked ) Definition : In this life less bearing , should be in any of its rolling element bearing ring or fatigue damage occurred on the initial ( spalling or defect ) . However, both in the laboratory tests or in actual use , can clearly see , in the same operating conditions the appearance of the same bearing , the actual life different. In addition there are a number of different definitions of the bearing "lifetime" , one of the so-called " working life ", which indicates a bearing can be achieved before the damage is determined by the actual life wear, damage often caused not by the fatigue , but by the wear, corrosion, and other causes of damage to the seal .
Three crowned as the world 's most ethical companies list |
09-13 |
Compared with these certifications , Timken 's own strict quality management system to many , the assessment points turned over several times , and our products must meet strict quality system that can only be delivered to the customer ."Three crowned as the world 's most ethical companies listMarch 12, 2013 , more than 100 countries around the world 36 sectors of the many companies, special bearings in commercial practice and adhere to abide by the principle of good faith has played an exemplary role , Timken 3rd boarded the U.S. Ethisphere Institute released " world's Most ethical Companies list ." U.S. Ethisphere Institute (EthisphereInstitute), is a commitment to advancing corporate governance, risk management, sustainable development , compliance and cross bearing ethics best practices in the field of international institutions .For this award , Zhong Zhiyong very identity . Because they each do one thing they have to consider: how local laws and regulations is required ? Compliance is a prerequisite for survival , also in line with the core values of Timken 's first ethics and integrity .Attaches great importance to the interests of employeesUnder normal circumstances , Timken interests hoping to achieve three unified , that shareholders 'interests , the interests of customers , employees' interests .Here, not only refers to the remuneration of employees' interests , but also including the work environment , individual capacity building , career development and so on. Provide resources to help employees self-study, in order to achieve the ability to enhance , is one of them .Timken employees, Timken University at large have learning experience . This is an online site that offers mentoring programs and online training resources , covering about leadership , speech and eloquence , cultural differences, anti-corruption , bearing manufacturing technology, curriculum over 20,000 .
always practicing , practicing corporate core values. |
09-13 |
The Timken Company always adhere to the quality of corporate brand competitiveness The Timken Company is a corporate brand named after the founder's family . Only products that meet the quality standards of the company , will be bearing catalogue with the Timken brand. As a global leader in Industrial Technology , The Timken Company has always believed that corporate brand reputation and glory of the family , is equally important.Adhering to this concept, located in the national high-tech zones Xiangtan Iron Mu Kenxiang electricity ( Hunan ) Bearings Co. , always practicing , practicing corporate core values. Recently, the reporter visited the company's general manager Mr. Zhong Zhiyong .Quality is the key to maintaining the competitiveness of products"Quality is a core value of The Timken Company , is one of the cornerstone of our brand promise ."Timken has a unique quality management system TQMS, production globally consistent quality product , whether it is in the United States , or in Europe or China ." Xiangtan plant products have passed the certification Timken angular contact ball bearing , which means that we localize the overall quality management system of Timken 's global headquarters recognition ."In addition, Xiangtan plant also passed the ISO9001 quality management system, ISO14001 environmental management system, OHSAS18001 occupational health and safety management system certification.