Source:未知Author:HONBbearing07 Addtime:2021-07-17 16:50 Click:
Overheating is the biggest culprit of bearing failure, mainly because bearing heating is generally an alarm signal of abnormal machine operation. Failure to deal with it as soon as possible will cause chain reactions such as machine damage. Common causes of bearing heating are:
What are the reasons for bearing overheating?
1. The bearing has low precision and improper selection
Bearing accuracy is not up to standard or there is a difference in the selection, because the machine cannot meet the best operating conditions, it will intuitively cause the bearing to heat up. Solution: Use bearings with accuracy grades required by the authorities.
2. Large vibration
For example, the coupling alignment process does not meet the requirements, the rotor has dynamic and static imbalance, the foundation rigidity is poor, the foot is virtual, rotating stall and surge.
During operation, some rotors are corroded by the medium or worn by solid impurities, or the shaft is bent, which will cause unbalanced centrifugal force, which will cause the bearing to heat and vibrate, and the raceway will be severely worn until it is destroyed.
3. Insufficient cooling
Insufficient cooling is usually manifested as: pipeline blockage, improper selection of cooler, poor cooling effect, etc.
The fouling and blockage of the cooler of the lubrication pipeline will cause the cooling effect to deteriorate, especially in summer production.
The cooler has serious fouling and frequent alarms for excessive bearing temperature are encountered in many production sites. A more effective solution is to pickling and descaling the cooler before the beginning of summer each year.
4. Improper installation
Improper installation is another important cause of bearing heating. Because the bearing is installed correctly or not, it has a direct impact on its life and the accuracy of the host, so the center line of the shaft and the bearing hole must be coincident during installation.
If the bearing is installed incorrectly, the accuracy is low, and the bearing has deflection, torque will be generated during rotation, causing the bearing to heat or wear. In addition, the bearing will generate vibration, increase the noise, and increase the temperature rise.
Luoyang Hongyuan Bearing Technology Co., Ltd. (HONB) was established in December 2005, located in the Luoyang ,China. HONB with more than 300 employees which specializes in manufacture of YRT,YRTS,YRTM,ZKLDF Series rotary table bearings, RA,RB,RE,RU,CRBH,SX Series crossed roller bearings and CSG,SHG,HYR series robot reducer bearings. The precision grades are P2, P4 and P5, and the size range is 20mm ~2000mm.