Bearings used in harsh environments, needle bearing seal ring and seal cover is essential, because they can prevent the intrusion of dirt, extend bearing life. Rolling mill rolls are usually supported by four columns capped. Use requirements when subjected to a strong impact load, the intrusion of water and debris.
1 the reasons for premature failure of bearings
Causes of premature failure of bearings is multifaceted, but the main is improper use and maintenance and lubrication, poor lubrication, Assembly, transport, dismantling, pollution overload occurs during impact and shock. Pollution is caused by human factors, is the removal tool does not finish wash, among other factors. Effect of clearance, clearance is too large between the axis and the axis, relative movement between the two, is in line with the shaft segment growing excessive wear gap, culminating in needle roller bearing scrap: second, bearing cracks affect the precision of the movement. These causes premature failure of bearings, it is to the disadvantage of our actual work, therefore, how to avoid premature failure of bearings and prolong life expectancy is of great practical value.
2 How to avoid premature bearing failure
Prevent premature bearing failure is the most effective way to avoid the above analysis of the various factors and these factors condition: before first use when selecting products, taking into account the size of the noise, rigidity, bearings, radial fissure size, rotational torque of size, and so on. Selection of lubricating oil, depending on the bearing working environment, different lubricants in use of different noises.
Regularly check the oil level and oil lubricants, under normal circumstances, the normal oil level oil level Windows for devices within ′ or ′ 1/3-2/3. Cup of the oil supplement method for oil, their ability to display fuel level represents only oil supplement, housing the oil level is to meet operational requirements, the oil level in the oil Cup less than one-fourth could be considered to make up the total volume of oil.
Check the results, if bearing damage and abnormalities are found, follow the needle injury identified, developing policy responses. Also, check the result, if there are several defects, bearing can no longer be used, and new bearing needs to be replaced.