La razón por la que la temperatura del rodamiento es demasiado alta
2020-04-28
The reason why the bearing temperature is too high
1. Poor lubrication
Lubrication has an important influence on the service life of the bearing, friction, wear and vibration, etc. Good lubrication is a necessary condition to ensure the normal operation of the bearing. About 40% of bearing damage is related to poor bearing lubrication.
The role of lubrication for bearings mainly includes:
1) Prevent metal corrosion
2) Exclude foreign materials, play a sealing role
3) Discharge friction heat to prevent bearing temperature rise too high
4) Reduce friction and wear, thus extend bearing life
Common factors that cause poor bearing lubrication are:
1) Insufficient lubricant
2) Lubrication pipe is blocked by foreign material
3) Quality problems from lubricating oil
4) Failure to add lubricant on time
5) Impurities in the lubricating oil
2. Bearing wear
As an important part, the bearing is used in various large and small types of machinery, and some mechanical working environments have many dusts. When some fine dust enters the high-speed running bearing housing, the lubricating oil or grease in the bearing housing deteriorated and poor lubrication. the bearings wear appear.
The bearing continues operating under wear condition, as the friction increases, the heat increases, causing the bearing temperature rising.
3. Improper installation
Improper installation is another important cause lead bearing heat, so the centerline of the shaft and bearing hole must be coincident during installation.
If the bearing is not installed correctly, with low precision and deflection, torque will be generated when rotating, causing the bearing to heat or wear.
4. Insufficient cooling
Insufficient cooling usually manifests as: blockage of the pipeline, improper selection of the cooler, and poor cooling effect.
5. Large vibration
6. Not check the replacement timely
7. Bad bearing quality
8. Improper bearing selection