Commonly used installation tools for bearings include hand hammers, copper rods, sleeves, special pads, screw-mosquito fixtures, presses, etc., with vernier calipers, micrometers, dial gauges, etc., but different tools should be selected according to different car bearing models. . After selecting the correct tool, the INA bearing can be installed. Pay attention to the presence of no bumps, rust layer, wear debris, sand, dust and dirt. If it is, it will cause installation difficulties and must be maintained. The surface of the bearing assembly and the mating parts are clean.
The calculation method for the basic rated load of INA bearing is suitable for the high-quality hardened steel commonly used by Dangdang, which is manufactured according to a good processing method, and the rolling contact surface is basically a conventionally designed rolling bearing. Beyond the above specified range, bearing load capacity will be affected. Influence of material The bearing steel has different smelting methods, and the size, enactment and content of inclusions in the material are also different. This difference in village quality can have a beneficial or adverse effect on the bearing capacity of the bearing. If ordinary electric furnace bearing steel is used, the load capacity of the bearing will drop to varying degrees. On the contrary, if the bearing steel smelted by methods such as vacuum remelting, electroslag remelting, etc., or other equivalent materials, the load capacity of the automotive bearing will be improved to varying degrees. The effect of temperature The average bearing can withstand an operating temperature of up to 120 ° C (outer ring measurement temperature of 100 ° C). For working conditions above this limited temperature, bearings made with special heat treatment or special materials shall be used.
In addition to the INA bearing assembly surface and the matching surface of the parts to be cleaned, pay attention to the surface of the journal, the housing hole, the shoulder end face, and the connecting parts such as bushings, washers, end caps, etc. ? If you have any, you can use a fine smash, light sanding, and then install. Rolling bearings are precision components and their use must be carried out with care. No matter how high-performance bearings are used, if not used properly, the expected high performance will not be achieved. The precautions for the use of automotive bearings are as follows:
1, use the appropriate operating tools
Avoid using existing tools and use the right tools.
2, keep the bearings and their surroundings clean
Even small dust that is invisible to the eyes can have a bad effect on the bearings. Therefore, keep the area clean so that the dust does not intrude into the bearing.
3. Use with caution
In the use of the INA bearing strong impact, it will produce scars and indentations, which is the cause of the accident. In severe cases, cracks and breaks occur, so care must be taken.
How to correctly judge INA high temperature bearing damage fault maintenance problem
Then how to deal with the INA bearing damage? If the bearing is used correctly, it can be used until the fatigue life is reached. However, there will be accidents that are prematurely damaged and cannot be used. This early damage, as opposed to fatigue life, is a quality use limit called a fault or accident. Many of them are caused by inadvertent installation, use, and lubrication, and foreign objects intruding from the outside are insufficiently studied for the thermal effects of the shaft and the outer casing. Regarding the damage state of high-temperature bearings, such as the ferrule of the roller bearing and the framing of the rib, it is considered as a cause of insufficient lubricant, unsuitability, defects in the oil supply structure, intrusion of foreign matter, bearing installation error, shaft If the deflection is too large, there will be coincidences of these reasons. Therefore, it is difficult to know the true cause of the damage by only investigating the bearing damage. However, if you know the use of imported bearings, the conditions of use, the structure around the bearing, and understand the situation before and after the accident, combined with the damage state of the bearing and several reasons, it can prevent similar accidents from happening again.
First of all, when we remove the INA bearing, we should first use the method of photography to make a good appearance record. Also, check the amount of remaining lubricant and sample the lubricant before cleaning the high temperature bearing. The cleaning of the bearings is carried out by rough washing and fine washing, and a metal mesh frame can be placed on the bottom of the used container.
When rough washing, remove grease or adhesive with a brush or the like in the oil. At this time, if the INA bearing is rotated in the oil, be aware that the rolling surface will be damaged by foreign matter or the like. When cleaning, the bearing is slowly rotated in the oil and must be carefully carried out.
The cleaning agent generally used is a neutral non-aqueous diesel oil or kerosene, and a warm alkali liquid or the like is sometimes used as needed. Regardless of which cleaning agent is used, it is often filtered and kept clean. The proper selection of materials is still a factor that must be considered in bearing failure analysis. The main task of bearing failure analysis is to find out the main factors causing bearing failure based on a large number of background materials, analysis data and failure modes, so as to propose improvement measures in a targeted manner, prolong the service life of high temperature bearings, and avoid the occurrence of INA bearings. Early failure of the hair.
According to the technical requirements of bearing installation, use, maintenance and maintenance, monitor and check the load, speed, working temperature, vibration, noise and lubrication conditions of the running INA bearing, find out the abnormality and immediately find the cause and adjust it. It returned to normal.
First of all, when we remove the INA bearing, we should first use the method of photography to make a good appearance record. Also, check the amount of remaining lubricant and sample the lubricant before cleaning the high temperature bearing. The cleaning of the bearings is carried out by rough washing and fine washing, and a metal mesh frame can be placed on the bottom of the used container.
When rough washing, remove grease or adhesive with a brush or the like in the oil. At this time, if the INA bearing is rotated in the oil, be aware that the rolling surface will be damaged by foreign matter or the like. When cleaning, the bearing is slowly rotated in the oil and must be carefully carried out.
The cleaning agent generally used is a neutral non-aqueous diesel oil or kerosene, and a warm alkali liquid or the like is sometimes used as needed. Regardless of which cleaning agent is used, it is often filtered and kept clean. The proper selection of materials is still a factor that must be considered in bearing failure analysis. The main task of bearing failure analysis is to find out the main factors causing bearing failure based on a large number of background materials, analysis data and failure modes, so as to propose improvement measures in a targeted manner, prolong the service life of high temperature bearings, and avoid the occurrence of INA bearings. Early failure of the hair.
According to the technical requirements of bearing installation, use, maintenance and maintenance, monitor and check the load, speed, working temperature, vibration, noise and lubrication conditions of the running INA bearing, find out the abnormality and immediately find the cause and adjust it. It returned to normal.
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