Chapter 1:Capabilty Analysis and Testing Method of a Sliding Bearing
Sliding bearing is one of the important parts of construction machinery. Poor installation will affect its performance and even cause the failure of construction machinery equipment. After the bearing is installed, if the alignment is not carried out carefully, the alignment may cause the XXX bearing to suffer additional load, friction and vibration. These may accelerate fatigue and reduce the service life of the bearing, and may damage the service life of other machine parts. In addition, increased vibration and friction may greatly increase energy consumption and the risk of premature failure.
If there are iron filings, burrs, dust and other foreign objects in the bearing, it will cause noise and vibration when the bearing is running, and even damage the raceways and rolling elements. Therefore, before installing the bearing, you must ensure that the installation surface and installation environment are clean.
Lubrication plays an extremely role on the operation and life of sliding bearings. Grease is made of base oil, thickener and additives. The performance of grease is mainly determined by the base oil. Generally low viscosity base oil is suitable for low temperature and high speed; high viscosity base oil is suitable for high temperature and high load.
Thickeners are also related to lubrication performance, and the water resistance of thickeners determines the water resistance of grease. In principle, greases of different brands cannot be mixed, and even greases with the same thickener will have a bad influence on each other due to different additives. The surface of XXX bearing is coated with anti-rust oil, it must be carefully cleaned with clean gasoline or kerosene, and then coated with clean, high-quality or high-speed and high-temperature lubricating grease before installation. Fully enclosed bearings do not need to be cleaned and oiled.
The basic external conditions of bearing operation should be monitored frequently, such as temperature, vibration and noise measurement and so on. These regular inspections will detect potential problems early and prevent unexpected machine suspensions, so that the production plan can be realized, and the productivity and efficiency of the factory will be improved.
During operation, the bearing requires correct relubrication to perfect its performance. The method of sliding bearing lubrication is divided into grease lubrication and oil lubrication. In order to make XXX bearings perform well, first of all, we must choose a lubrication method suitable for the conditions and purpose of use. If only lubrication is considered, the lubricity of oil lubrication is dominant. But grease lubrication has the advantage of simplifying the structure around the bearing.
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