What are the cause of the high temperature when rolling bearing is running？

Bearing temperature is too high
Bearing during operation in high temperature is common and harm of very large mechanical equipment fault, will reduce the service life of bearing for a long time, but will also increase the cost of maintenance, when temperature increases quickly, excess temperature, easy to cause the unit not plan to stop or reduce the load running, such a great influence on economic benefits.
So, quickly determine the cause of the malfunction, take proper measures to solve, is the equipment safe operation of the continuous support.
Why the bearing temperature is too high
1, Amount to improper lubrication
 Grease too little or too much, should be in accordance with the requirements of the work at ordinary times, cheer for bearing box regularly.Bearing oiling sometimes may appear after the condition of high temperature, this phenomenon is too much gas.Then hou phenomenon of temperature rising continuously, after reach a certain point will remain the same, then it will gradually decline.
2, Oil is not in conformity with the requirements of bearing with or has been polluted
The lubricating grease are not appropriate, but it's not easy to form homogeneous lubricating oil film, can't reduce the bearing internal friction and wear, lubrication, bearing temperature rise.
When different types of oil mixing, may occur chemical reaction, cause oil agglomerate, metamorphism, reduces the lubrication effect.Contaminated by oil will make bearing temperature rise, in the process of grease into the dust, causing oil pollution, internal oil degradation failure will result in bearing box bearing lubrication, temperature rise.So you should choose the appropriate grease in the repair of bearing housing and bearing cleaning, inspection gas pipeline dredge, different types of oils and fats can not mix, if you want to replace the other types of oils and fats, should clean up the fat off from the original;Operation maintenance regularly in grease, grease do moistureproof and dustproof measures should be properly kept.
3, Insufficient cooling pipe blockage,
Excessive oil temperature and return water temperature.If chosen inappropriate, cooler cooling effect will become poor, cannot satisfy the use requirement, should be replaced in time or tied for installing new cooler.Axial flow fan should also check the core insulation and sealing.
4, Bearing wear
As important parts, rolling bearing used in all kinds of big machines, and some mechanical dust (such as crusher) work environment, as part of the fine dust into the high speed bearing, made to the socket in the lubricating oil or grease metamorphism, poor lubrication, which in turn makes the bearing wear.
Bearing wear in a state of work, due to the friction force increases, quantity of heat to increase, resulting in bearing temperature.
5, Improper installation
Improper installation is another important reason of bearing heating.Because the bearing is installed correctly or not, have a direct impact on the life and precision of host, so the installation requirements of shaft and the bearing hole centerline must coincide.If the bearing installation, low accuracy, bearing the deflection, rotation will generate torque, when cause bearing heating or wear and tear.In addition, bearing produces vibration and noise increases, also can make temperature increasing.

Supplier
BMB Bearings ia a precision bearing enterprise specializing in the production of double row angular contact ball bearings, double row deep groove ball bearings, and single row angular contact ball bearings. The company is a end bearings manufacturer enterprise producing double row angular contact ball bearings in China. Its models cover 3200 series, 3300 series, 3000 series, 3800 series, 3900 series, etc. The product accuracy grades are: P0, P6, P5, P4, and the products are widely applicable.
The company also maintains an extensive inventory of superior roller bearings, ball bearings, Deep Groove Ball Bearings, Selfaligning ball bearing, Angular Contact Ball Bearings, Thrust Ball Bearings and much more.