2013年12月2日星期一

Bearing structure and conditions of service


Generally speaking , the proper use of the rolling bearing , the fatigue life can be achieved . But early damage if an accident occurs , you can no longer use . And fatigue different life, this early damage , known as failure or accident. Multiple causes of installation , use, lubrication on the ill- considered , from the intrusion of foreign bodies or external to the shaft , bearing insufficient research .
Thus , the survey only bearing damage , it is difficult to know the real cause of injury. However , if you fully understand the use of the bearing of the machine, the foundation conditions and its peripheral structure, clarify the situation before and after the failure  occurred , combined with damage of bearings and analyze a variety of related reasons , we can prevent similar failures again. Bearing Injury representative and countermeasures.
Even the use of ultra- modern manufacturing techniques and processing the highest bearing parts . Observed with thrust ball bearing pretension load change reading method . Preload method has its negative aspects , is well known . The appearance of their work will always be kept in the appropriate parts of the micrometer head against the end face of the bearing or shaft .
1 . Bearing structure and conditions of service . Different structures for different conditions of service ; different auto parts bearing on the structure of their process vary , it affects  their quality. Therefore, we should develop new structured products to suit different bearings for rolling mills conditions of service and may indicate its appropriate service conditions or performance on the rolling bearing instructions to facilitate customer choice .
2 . Strengthen technology research, improve the processing technology to improve processing quality and reduce the possibility of defects in the processing . If the heat treatment , a greater variety of inner and outer rings , try to use the lower limit of the quenching temperature , holding time to adapt , to improve the alloy concentration , increasing the fracture strength of martensite , and choose a higher return under the premise of quality assurance ignition temperature to enhance the toughness of the workpiece.
3 . Improved processing means of monitoring and promoting quality improvement process . Such as improved monitoring of the flow path curvature position , improve the overall performance of the car bearing assembly after Rolling improve working conditions .

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