This model of WEICHAI  SINOTRUK CON ROD BUSH 61500030077 adapted high quality of aluminum material, big brand DAFENG bearing, which sells very well in the market.  

 

 

 

The maintenance and maintenance of the bearings, you have to know these

 

Bearing is an important parts of pump machinery and equipment, which plays an irreplaceable role in supporting fixed mechanical rotating bodies and reducing friction in motion. If the bearings can be used for a long time and small wear, we must pay attention to the maintenance and maintenance of the bearings during our daily use. Today we will talk about the maintenance and maintenance of the bearings.

The impact of cleanliness on bearing life and vibration noise is very great. Before installing the bearings, make sure to clean the surface and install the environment. If there are foreign bodies such as iron dumbs, burrs, and dust in the bearings, the bearings will produce noise and vibration during operation, and even damage the roller and rolling bodies. Therefore, cleaning should be cleaned before the bearing installation. The surface of the bearings is coated with anti -rust oil. It must be carefully cleaned with clean gasoline or kerosene. In particular, the full -closed bearing does not need to clean and refuel.

Lubrication has an extremely important impact on the operation and life of the bearings. Pay special attention when choosing fat. Lubricating fat is made of basic oil, thickening agent and additives. The performance of lubricating fats of different types and different brands of different types is very different. The allowable rotation limit is different. Be careful when choosing. The performance of lubricating fat is mainly determined by basic oil. Generally, the basic oil of low viscosity is suitable for low temperature, high speed, and high viscosity for high temperature and high load. The thickener is also related to lubricating performance. The water resistance of the thicker determines the water resistance of fat. In principle, different brands cannot be mixed, and even the lubricating fats of the same thicker agent will have a bad impact due to different additives.

When lubricating bearing, the more oil is painted, the better. This is a common wrong concept. Excessive oils in the bearing and bearing rooms will cause excessive stirring of fat, which will generate high temperature. The number of bearing charging lubricants is suitable for 1/2 to 1/3 full of internal space of the bearings, and it should be reduced to 1/3 at a high speed.

 

Pay attention to some issues when installing and disassembling. Do not directly hammer the bearing surface and non -bearing surface when installing. You should use the pressure blocks, sleeves or other installation tools (installed) to uniformly stress the bearings. Do not install it by rolling. If the installation surface is painted with lubricating oil, the installation will be smoother. If the conjunction of a large impact, put the bearings into the mineral oil to heat up to 80 ~ 90 ° C as soon as possible, strictly control the oil temperature does not exceed 100 ° C to prevent the hardness of the fire recovery effect and the recovery of the size. When disassembling difficulties, it is recommended that you use the disassembly tool to pull the heat on the inner ring with the heat on the inner ring. The heat will expand the inner ring of the bearing and make it easier to fall off.

 

 

 

The radial gap of the bearing is not as small as possible. Not all the bearing requires the minimum working gap. The appropriate gap must be selected according to the conditions. Among the national standard 4604-93, the rolling bearing radial gap is divided into five groups, 2, 0 groups, 3 groups, 4 groups, and 5 groups. Basic radial gap group is suitable for general operating conditions, conventional temperatures and commonly used overproduction; bearing at high temperature, high -speed, low noise, low friction and other special conditions should be used. Small radial gaps should be selected for precision spindle, the main shaft of the machine tool; the roller bearings can be kept in a small amount of working gap for the roller bearings. In addition, it does not matter the separate bearing; in the end, the working gap after the bearing installation machine is smaller than the original gap before installation, because the bearings must bear a certain load rotation, as well as the cooperation and load generated by the bearings and loads. Elastic deformation.

 

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