Date: 2013-08-22

Explain importance of TIMKEN bearing preload

What is the first tightening? What is called bearing preload. We explain, we all know that according to the different applications, TIMKEN bearing arrangement with a positive or a negative operational clearance. In most cases, the operational clearance should be positive, that is, TIMKEN bearings at run time, leaving some residual clearance, although there may be a small amount of clearance. Many applications require a negative operational clearance--that is tightening.
So what does preload?
TIMKEN bearing preload first and foremost improve rigidity or running accuracy of the bearing arrangement, followed by preload to reduce noise, improve guidance accuracy of the shaft to compensate wear extending working life, for example in the running of machine tool spindle bearings, pinion bearings in the motor shaft and bearings of small motors, or do the reciprocating motion of the bearing arrangement. In some applications, if TIMKEN bearings are not or only very low load, and run at high speeds, you should preload on the bearing arrangement, for example through the spring. In this case, tightening of the role is to provide minimum bearing loads to prevent rolling element bearing damage caused by slipping.
TIMKEN bearing preload?
Preload according to the different types of bearings, radial, or it can be eccentric. For example, cylindrical roller bearings, due to the reason of its design, can only be imposed by the radial preload, and thrust ball bearings and cylindrical roller thrust bearings can only be imposed by the axial preload. Single row angular contact ball bearings and tapered roller bearings are generally subject to axial preload, and usually with another similar type of bearing pairs in a back-to-back or face-to-face manner. Deep groove ball bearings are normally equally subjected to axial preload, in order to achieve the objective of tightening should be used with a radial internal clearance larger than normal, and the purpose of angular contact ball bearings with a contact angle greater than zero.  

Previous: Main thrust FAG bearing inspection and repair techniques
Next: Influence factors of INA bearing service life are those

Hot Products:

Product Model	Inside Diameter	Outside Diameter	Thickness
7017CDF NSK	85	130	22
7017ADF NSK	85	130	22

【TradeBearings News Statement】

1.The news above mentioned with detailed source are from internet.We are trying our best to assure they are accurate ,timely and safe so as to let bearing users and sellers read more related info.However, it doesn't mean we agree with any point of view referred in above contents and we are not responsible for the authenticity. If you want to publish the news,please note the source and you will be legally responsible for the news published.
2.All news edited and translated by us are specially noted the source"TradeBearings".
3.For investors,please be cautious for all news.We don't bear any damage brought by late and inaccurate news.
4.If the news we published involves copyright of yours,just let us know.