Cylindrical Roller Bearings grease selection
|
| Time：2016.09.12 News Sources：Shandong Xinkaite bearing Co.,Ltd. Views：
|
In order to better play the best condition of the bearings, cylindrical roller bearing grease choose a direct bearing on the stability of the operation of the device. Bearing grease selection is necessary to be considered from the following aspects:
Rust inhibitor preferably insoluble in water. Oil should have good adhesion, for use in internal FAG bearing grease must have rust. And can form a film on the steel look.
Lead to the disclosure. During normal operation, the grease in the mechanical processing will become soft. FAG bearing grease flung by the bearing. If the mechanical stability of the oil is not enough, during operation, it will make oil soap structure mechanical disintegration, causing oil to be destroyed, and thus lose lubrication.
Bearings during operation, seal is required to maintain cylindrical roller bearings and lubricants from external contamination barrier. Regardless of debris or moisture can not penetrate the bearings, to avoid causing their destruction. It means enjoying the right to play is an important factor FAG Bearings longest life. At the same time, we must pay attention to the cleanliness of the bearing, bearing selection and the correctness of the choice of appropriate equipment and maintenance tools. In addition, the bearing is necessary to protect against contaminants and moisture contamination, and to ensure that there are proper means and lubrication. Therefore, FAG Bearings arranging the design, condition of the seal, lubricant type and lubrication intervals, as well as a dedicated home for all the same plays and important role.
1, low-noise bearing installation and adjustment can also be emulated long life cylindrical roller bearings grouping method allows interference with the same size than the bearing clearance is also more consistent with the interference and want to take a smaller value to the extent possible, ensure bearing raceway deformation is small so that the rolling element caused by noise becomes small.
2, clearance status of a great relationship over the noise when the bearing is in operation the maximum temperature state clearance values exactly zero. Analyzing excessive clearance methods are: stationary state of the shaft for reciprocating axial displacement of a significant reduction in its large, muddy noise emitted during operation.
3, if you issue nasty shrill whistling during operation then the preload of cylindrical roller bearings have a much larger bearing preloaded should be slightly relaxed the degree of pretension. If the clearance is too big can make two bearing rings axially slightly relative deviation: only reduces clearance and increases the axial rigidity bearing noise can be reduced.
4, rolling when entering the zone will slip or no load for about ran this way, will increase the noise can also cause wear small clearance and high axial stiffness to eliminate this phenomenon. But the clearance is not too small to avoid overheating and shortened life expectancy.
5, sometimes due to the hosts operating temperature range is large or the size of the shaft and housing bore discrete lot can not get a more appropriate set-clearance in this case can cylindrical roller bearing outer ring elastic constant pressure preload method.
|
|
