A: bearing maintenance, cleaning and maintenance - bearing knowledge

Bearing the maintenance of rolling bearing is an important mechanical basis should be extensive, widely used in national economy and national defense fields. Using rolling bearing mechanical and working environment differ in thousands ways, so it is important to pay special attention to the maintenance of bearing, to improve the service life of bearing. Bearing the installation of the rolling bearing is a kind of precision parts, has high size precision, if improperly installed, will lose the precision and performance, serious when still can cause bearing failure. So bearing installation site must be cleaned and installation tools, in order to prevent the interior of particles into the bearing. Install and remove the bearing should not be directly hammer, should impose uniform pressure, shaft and bearing the interference fit is larger, the bearing should be immediately after the heating installation. Bearing products rust bearing is a kind of precision machinery parts. After a long circulation from product factory. In order to prevent bearing under various environmental conditions occur corrosion during transport or storage, must be antirust processing. According to the regulation of national standard GB/TS597. Bearing the antirust period for half a year. General bearing antirust period for a year, had a higher requirement of brass antirust period for two years. Bearing cannot be used in the antirust period due to various reasons. When reach bearing antirust period, should remove rust inhibitor. Bearing packing because bearings are precision parts, and the circulation is more, the product in the process of circulation of these vulnerable to environmental conditions such as snow, dust, temperature, the influence of the corrosive substance, such as the damage. Therefore, bearing requirements of packaging is required more minutes performance, such as shock, moistureproof, prevent q touch, corrosion resistance, pressure, etc. Bearing no leak in the storage warehouse and bearing location to avoid direct sunlight, should the indoor air circulation, but can not have dust. Warehouse shall have ventilation and temperature control equipment. Warehouse should be kept dry, relative to the temperature control under 80%, indoor temperature control at 25 degrees or so, and should not have much day and night temperature changes. Put rust agent temperature is too low, easy to crystallization, craze, resulting in part of the bare metal corrosion, high temperature, rust agent easy loss ( Evaporation) Or metamorphism, day and night temperature difference is easy to cause corrosion caused by moisture condensation in the bearing surface. Yesterday, shaft bearing location should not be close to the heating around. Inside the warehouse to the ground should be hard not easy up dust to the ground. Bearings shall not with acid, alkali, salt and other corrosive materials, chemical raw materials, water supplies and stored in a warehouse. Storage of bearing is not easy to warehouse around the intrusion of harmful gases. Bush's improper transport eclipse the most easily, thereby causing loss to the bearing link, such as micro wear, corrosion, knock against injury, indentation, etc. , the most pretty handling can even lead to bearing crack and failure directly. So should pay special attention to transportation transportation quality, avoid bush suffer from unnecessary damage. Bearing the means of transport should be placed, when putting on the pressure must not be in the direction of bearing outside diameter, to prevent the deformation of brass. Transport tool box when the pattern should be as much as possible close to the distance between, in order to reduce transit shaking for bearing the impact and vibration. Bearing in use process need us for the daily maintenance and overhaul, today we will come together to see the relevant information. A clean bearing, bearing in the cleaning and maintenance, is the first step to do the record bearing the appearance of the situation and confirm the residual amount of lubricant, the remaining lubricant sampling for inspection after use, we can start to clean the bearing. Bearing cleaning agent is mainly used ordinary gasoline or kerosene. Bearing cleaning can be divided into coarse and fine fine cleaning cleaning, in coarse when cleaning the container need to pad bearings use put metal mesh, this bearing will not come into contact with the container again after cleaning the dirt. Coarse can be used when cleaning brush to clear the grease on the bearing, adhesion, bearing should be avoided in the process of carrying contamination rotation, otherwise easy to damage the bearing rolling surface. Bearing a coarse after washing clean roughly into fine cleaning process, the bearing on the fine cleaning with the cleaning of oil in rotation, and carefully remove the remaining residual dirt, in the process of fine cleaning should pay attention to clean the oil clean. Second, bearing the repair of bearing after clean, detailed inspection shall be conducted, to determine the bearing damage degree, mechanical properties and usage and can continue to use. Check the content mainly includes the roll to the surface on the surface of the rolling surface and cooperate with the state, the abrasion of cage, bearing on the dimensional accuracy of damage, bearing clearance, etc. Bearing, in the wake of a certain defects can judge cannot continue to use, and the new bearing must be replaced. These include: inner ring and outer ring of bearing, there are obvious creep; Bearing temperature change color; Bearing inner ring and outer ring, rolling body and keep the shelf once cracks, holes and fracture; Rolling bearing to the surface, guard, on the roller card wounded, rust, indentation, and mark.