What are the problems in the use of cylindrical roller bearings?
In fact, and simple on two aspects: temperature and vibration, the Yue precision bearings introduced in detail:Temperature sideIn peacetime use, the vibration of the bearing damage is quite sensitive, spalling, indentation, corrosion, cracks, wear and tear will be reflected in the measurement of bearing vibration. Therefore, by using a special bearing vibration measuring instrument (frequency analyzer, etc.), the vibration size can be measured, and the abnormal situation can be inferred by the frequency distribution. The measured values are different because of the conditions of the bearings or the location of the sensors. Therefore, it is necessary to determine the standard of judgment after comparing and analyzing the measured values of each machine in advanceShock aspectHigh temperatures often indicate that cylindrical roller bearings are in exceptional condition. High temperature is also harmful to bearing lubricants. Sometimes the bearing is overheated and can be attributed to the lubricant in the bearing. If the bearings are longer than the temperature of 125 degrees, even the transfer will reduce the bearing life. The causes of high temperature bearings include insufficient lubrication or excessive lubrication, impurities in the bearing raceway, excessive extreme speed, long term overload operation of bearings, etc.
4, small amount of interference in the case, at room temperature can be used to suppress sleeve bearing ring face, beating with a hammer sleeve, the sleeve will be pressed into the ring balance. If installed in large quantities, the hydraulic press can be used. When pressing, the outer end surface of the outer ring and the outer shoulder of the shell face shall be ensured, and the inner ring end face is tightly pressed with the shoulder end of the shaft platform, and no gap is allowed.5, when the interference is large, the oil bath heating or inductor heating bearings can be used to install the heating temperature range of 80 degrees -100 DEG C, the maximum can not exceed 120 degrees centigrade. At the same time, the nut or other appropriate method is used to fasten the bearing so as to prevent the contraction of the bearing in the direction of width and to create a gap between the collar and the shaft shoulder.6, the installation should be carried out after the rotation test, the first for the rotary shaft or bearing box, without exception, then the power for no load, low speed operation, and then gradually increase as the functioning of the rotation speed and load, and to detect noise, vibration and temperature, abnormal, stop operation and check. The running test is normal and can be used before delivery.
1. Must be installed in a dry, clean environment. Before installation, the machining quality of each part should be carefully inspected. All mating surfaces must be carefully cleaned and removed, and the cast surface must be clean.2, before installation, should be cleaned with gasoline or kerosene, dry after use, and ensure good lubrication, bearings generally grease lubrication, oil lubrication can also be used.3, the installation must be in the circumference of the end of the ring to apply equal pressure, the ring into the press, shall not be directly hit with tools, so as not to damage bearings.
