Heavy-duty bearing application tips

Application of heavy-duty bearing tip bearing ( 轴承) Selection and the main points of the high points in the selection of bearing rigidity are basically the same. The application of heavy-duty bearing ( 应用程序) Problem, must be combined with heavy-duty bearing work ( 工作) Characteristics to consider, consider) 。 Heavy-duty bearing work often are in a state of high stress, the bearing is sensitive to high stress, so the application technology of all links to strive to reduce the stress of the bearing, the stress of slow is very beneficial to increase the service life of bearing ( 一生) 。 Machine (such as high load machine) In the axial position ( 位置) Allow conditions, the original with a protection for the single bearing multiplication of two only to bear radial load and despite the influence of uneven load, under the condition of the same workpiece, the fulcrum of two bearing life is different than the original single bearing ( 条件) , is expected to increase more than twice as much. In fact, 事实) , often in a fulcrum in heavy machinery to use multiple bearing or more columns bearing to bear radial load. Heavy-duty bearing ( 轴承) Cooperation, with the clearance and heavy-duty bearing lubrication, clearance and lubrication must consider (unified consider) 。 In order to reduce the stress of heavy-duty bearing, hope thick lubricating film, so be used ( 使用) High viscosity of lubricating oil ( 润滑油) Or in high viscosity oil as base oil, grease, at the same time hope to guarantee good lubrication condition, because of the lubricant viscosity ( 粘度) Caused by the friction moment not too high. Heavy-duty bearing rotating ring fit interference quantity is larger than normal, and the raceway deformation and bearing life has adverse effect, so if possible, hope interference quantity reduced, this requires a lower with the roughness of the surface, at the same time keep the lubrication is normal, because the lubrication failure, one thousand under the overloading of raceway surface excessive friction torque make cooperate with surface creep, 俄文 做 ng) Trend to strengthen, appear even skid phenomenon, although the phenomenon occurs in the outer ring, but when serious inner ring is unavoidable. The attention to the outer ring of the actual ( 注意) Shoulds not be too large gap, in order to avoid oil penetrate the surface, prompting skid phenomenon, and make the ring is easy to deformation, reduce the bearing capacity of bearing area. Is only allowed after rigorous take effective countermeasures, appropriate to reduce heavy bearing with interference, the interference and the quantity is slightly reduced, for the improvement of the bearing stress state is bigger, of course, increasing the benefits of the oil film is even greater. Due to overloading of rolling bearing surface contact area is large, with tight, ring close to the amount and the deformation is bigger, so usually bearing clearance is bigger. From the host design to improve the bearing conditions of use ( 蒂雅 阿贾 n) In the transmission chain of host all drive shaft ( Shaft: shaft, telescopic sleeve tube and a universal joint) Should be appropriate to take high speed until the drive to down to work again when spindle speed, and for the installation of main shaft bearing ( ān zhuāng) Parts also should be bigger, is easy to choose larger bearings, these bearings are very favorable. Bearing bearing lubrication method, divided into grease lubrication and oil lubrication. In order to make the bearing function well, first of all, to choose suitable for conditions of use, the purpose of lubrication method. If only consider lubrication and oil lubrication. However, grease lubrication can simplify the structure of bearing the surrounding of the special features, compare the pros and cons of grease lubrication and oil lubrication. Such as cross section thin-walled bearing thin wall bearing ring can be a deep groove ball bearings ( C) At four o 'clock, contact bearing ( X) , angular contact ball bearings ( E) 。 Provide more various design in different series. Series depends on the size of the cross section. The ball and matching series. Deep groove ball bearings can support two-way axial load and radial load. The previous: double ball bearing in pairs next article: do you really know how to use ceramic bearing?