The bearing chamber abrasion reasons and maintenance - bearing knowledge

Bearing in the process of use, bearing chamber wear or crack of bearing defects and the bearing chamber is a common damage state, in order to make better use of the bearing, China bearing network based on experience tell you about the main reason for the bearing chamber and wear. Bearing chamber wear are the main reasons for the following four kinds: 1, dimension, mainly depends on the machining error of the result: most of the bearing housing and bearing outer ring with general use shaft basis, usually with into smaller clearance fit or transition fit. Once the fit clearance is too large, the bearing outer ring would occur in bearing indoor high frequency rotation, result in bearing chamber wear. 2, normal metal fatigue wear, fatigue characteristics of the metal itself has certain, long-term absorb vibrations will lead to the normal fatigue wear of metals, the phenomenon is determined by the metal itself characteristic, so only shaft production process by improving the production process to extend the metal fatigue cycle, improve the service life. 3, lubricating oil quality problems: general use of lubricating oil can be divided into synthetic oil and petroleum base oil. Lubricating oil has certain abrasion resistance, resistance to pressure and viscosity-temperature properties. So bad lubricating oil in use process generally cannot meet the high temperature dryer running environment, oil film instability or can't form effective lubricant film, lead to run bearing lubrication is not free. So bearing friction coefficient during the operation of large, which leads to the inner and outer ring and the bearing chamber form a large torque force, cause the damage of the bearing chamber wear. 4, maintenance, maintain undeserved, can't timely replacement of bearing or poor lubrication is one of the main cause of the bearing chamber and wear. Bearing housing maintenance: 1, use of the bearing chamber cooling system. Bearing chamber under the condition of cooling water in the correct use of not only prolong the service life of bearing seat, and improve production efficiency. Bearing housing material generally is made through a variety of special bearing steel processing, again good steel bearing chamber also have their use of blame, such as temperature. Bearing chamber in the condition of use, if the mold temperature is too high, it would be easy to make the surface of the core, tortoise cracking early some bearing chamber is not even more than 2000 times turtle crack and large area. Even bearing in production because of bearing high temperature mold core are changed color, the measured even reached more than four hundred degrees, the temperature meet again in the release agent is easy to appear crack, under the condition of chilling production of products is also easy to deformation, strain, sticky mold, and so on and so forth. In the use of the bearing chamber under the condition of cooling water can greatly reduce the use of release agent, which will help operators use mold release agent to reduce the temperature of the bearing chamber. The advantage is to effectively extend the service life of bearing seat, save die casting cycle, improve product quality, reduce the viscous modulus and strain and viscose aluminum case, reduce the use of release agent. Can also reduce the push rod caused by overheating bearing chamber temperature and core loss. 2, bearing chamber at the start of production in the process of bearing housing must be preheated, prevent the cold hot metal bearing chamber suddenly and cause turtle crack appeared, more complex bearing chamber can be used a blowtorch, liquefied gas, die temperature machine, with good condition simpler bearing chamber can take advantage of the slow shot preheating. 3, to the bearing chamber parting surface cleaning, it is very trouble, also is very easy to overlook, operators use kerosene in bearing chamber parting surface cleaning thoroughly again, not only can prevent the bearing chamber will not be crowded injury, and after cleaning, can put the bearing chamber was the remains of the release agent or other dirt jam exhaust slot through, is advantageous to the gas discharge in injection mold during the process of improving product quality. 4, if the bearing chamber equipped with neutrons control, attention is absolutely prohibited between the die casting machine and the bearing chamber signal lines have a joint phenomenon, the reason is very clear, in the daily production, it is hard to avoid signal lines touch water, easily broken or joint bandage, resulting in the sub and machine tool, if error caused by signal, light alarm, automatic stop delay time or signal is disorder, the bearing cap. Cause unnecessary losses. Travel switch attention to waterproof.