The problems how to accurately determine needle roller bearing

Accurate judgment of needle roller bearing is of great importance to the problem, because most of the time failed to accurately judge the fault, increase the probability of failure occurs, and the maintenance cost. Needle roller bearings are used in today's most mechanical applications. Even in the worst condition, these bearings are quite reliable. They are under normal working conditions have considerable service life. The latest research shows that only one percent of the needle bearing can not reach the expected service life. This shows that when the needle roller bearing premature failure is mainly due to a reason that could be avoided. Most of the needle roller bearing fault, such as spalling, pitting and spalling, deflection, crawling, corrosion, rust and abnormal wear pattern, is due to a relatively small group. These reasons are often interrelated, and can correct at the same time. Needle roller bearing the main reason for the failure including the erection, installation, work stress, environmental impact and the selection of the bearing. Proper lubrication is very important to improve the service life of the needle roller bearing. It helps with a thin layer of oil film covering the rolling and sliding surface, to avoid direct contact with the metal and metal. This helps to reduce wear and friction, improve the service life of needle bearing. Grease lubrication on the face, because it is easy to operate, help to simplify the sealing system. Good lubricant oil is high temperature or high speed operation. Lubricating oil failure may be caused by several reasons: use the wrong oil, use too much grease or oil, grease or use too little used lubricating oil, mixed and lubricating oil or grease contaminated grease/lubricant. The installation and the installation process is another area may lead to bearing failure. In the installation and the installation process, must use the right tools. In order to prolong the service life of needle roller bearing, should minimize the misalignment and shaft deflection. Operating pressure bearing failure is another reason. Usually, the factors in the large applications can change at any time. If the load is too high, can lead to early overload and stress. Also, if the load is too low, slippage may occur. Abnormal noise and temperature rise is the first sign of such a problem. That is how the operation of the application of stress affect the service life of needle bearing. To overcome these problems, you will receive each bearing one of the biggest life!