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Installation and maintenance of the bearings

From the point of view of use, to ensure that the bearing can work reliably, we should pay attention to the following points:
1, improve the lubrication quality, control the pressure, temperature and flow of the oil, and strengthen the oil filter.
2. Use conforming fuel oil and lubricating oil.
3. Control the temperature state of diesel generator set and work in the case of too cold and overheating. In cold days, the diesel engine should be preheated before starting, and turn the crankshaft by hand to make the oil into the friction surface.
4. The surface quality and geometry of the bearing and shaft journal should be strictly guaranteed.
5. Bearing clearance should be appropriate, the generator set is too large impact, too small is poor lubrication, may be burned tile.
How to ensure the reliable work of bearing generally speaking from the perspective of use of the following points:
1. The bearing gap should be appropriate, too large impact, too small bad lubrication, may burn tile;
2. bearing and neck surface quality and geometry should be strictly guaranteed;
3. Improve lubrication quality, control oil pressure, temperature and flow, strengthen oil filter;
4. Use qualified fuel oil and lubricating oil. In order to give full play to the bearing and maintain its due performance for a long time, regular maintenance (regular inspection) must be effectively done. Through appropriate regular inspection, it is very important to detect early faults and prevent accidents, to improve productivity and economy. Whether the installed bearing is installed correctly affects the accuracy, life life and performance.
Therefore, the design and assembly department should fully study the installation of bearings. Hope to install according to the job standards. The items of the operating standard are usually as follows:
(1) cleaning the bearings and bearing connecting parts
(2) check the size and finishing of the closed parts
(3) installation
(4) check after installing the bearing
(5) the supply of lubricant hope to open the bearing packaging just before the installation.
General grease lubrication, do not clean, directly fill with the grease. Lubricating oil lubrication, ordinary also do not need to clean, but, with the instrument or high-speed bearing, to wash with clean oil, remove the rust prevention agent coated on the bearing. Remove the rust repellent bearing, easy to rust, so can not be placed regardless of. Moreover, the bearings that have been sealed into the grease are used directly without cleaning.
The installation method of bearing varies according to the bearing structure, coordination and conditions. Generally, because of the shaft rotation is more, so the inner ring needs surplus cooperation. Cylinder bore bearings, mostly press in, or mostly hot loading methods. For cone holes, install directly on the taper shaft, or with a sleeve. When installed to the shell, the general swimming gap coordination, the outer ring has a surplus, usually with the pressure machine press into, or there is also a cold shrinkage fit method installed after cooling. With dry ice as a coolant, the moisture in the air will condense on the surface of the bearing. Therefore, appropriate rust prevention measures are needed. Maintenance and removal The removal of bearings is regular repair, bearing replacement. After removal, if continue to use, or also need to check the state of the bearing, the removal should be done as carefully as during installation. Pay attention not to damage the parts of the bearing, especially the surplus matching bearing disassembly, the operation is difficult. It is also very important to design and make disassembly tools as needed. In the disassembly, according to the drawings to study the disassembly method, order, investigate the coordination conditions of the bearing, in order to obtain the disassembly operation is safe.