The fracture of the cage of the crossed full-roller bearing without outer ring belongs to the occasional abnormal failure mode, and the main reasons are as follows: abnormal load of the cage. If the installation is not in place, inclined, and the interference is too large, the clearance will be reduced, the friction and heat generation will be aggravated, the surface will soften, and abnormal peeling will occur prematurely. The operation of the tapered roller bearing cage is blocked and additional load is generated, which aggravates the wear of the cage. Such a deterioration of the circulation effect may cause the cage to break. Poor lubrication mainly refers to the operation of a full-roller bearing without an outer ring in a state of lean oil, which is easy to form adhesive wear, which deteriorates the working surface condition. cause the cage to break. The intrusion of foreign objects is a common mode of cage fracture failure. Due to the intrusion of foreign hard foreign matter, the wear of the cage is aggravated and abnormal additional load is generated, which may also cause the cage to break. Creep phenomenon is also one of the reasons for the fracture of the cage. The sliding phenomenon of the so-called creep multi-finger ferrule, when the interference of the mating surface is insufficient, the load point moves to the peripheral direction due to sliding, resulting in the phenomenon that the ferrule is deviated in the circumferential direction relative to the shaft or housing. Once creep occurs, the mating surface wears significantly, and the wear powder may enter the inside of the crossed tapered roller bearing, resulting in abnormal wear, peeling of the raceway, wear of the cage and additional load, which may cause the cage to break. Cage material defects and riveting defects may cause the fracture of the cross-tapered roller bearing cage, and the countermeasures are to be strictly controlled in the manufacturing process. In industrial production, the use of bearings is indispensable. As a precision bearing with an extraordinary structure, the crossed tapered roller bearing also requires extra care during storage. The accuracy and quality of bearings can only be maintained in a suitable environment. So what are the storage conditions of the bearing? First, the full-roller bearing without outer ring should be stored in a clean and dry environment, and the temperature and humidity should be controlled during handling and storage. The temperature and humidity should be within a fixed range that can be taken over. , should leave the ground more than 30cm. 2. Some bearings have a certain shelf life. For example, for a bearing with a dust cover and an oil seal, when stored for a period of time, the starting torque of a full-roller bearing without an outer ring will be larger than that of a new bearing, and the lubricating performance of the grease will be crushed after long-term storage. Therefore, the bearing should be regularly inspected and maintained. 3. To ensure the normal and reliable operation of the cross tapered roller bearing, sufficient lubrication must be applied to prevent direct metal contact between the rolling elements, raceways and cages, resulting in wear and corrosion of the roller bearing skin. Therefore, in various applications, the selection of appropriate lubricants and lubrication methods is extremely important, and at the same time, correct maintenance is also required. Fourth, the actual choice of lubricant is mainly based on operating conditions, namely: temperature range and speed and the influence of the surrounding environment. If reliable lubrication can be ensured, the amount of lubricant used in the crossed roller bearing is small, and its operating temperature is low, but at the same time when it plays other functions, such as sealing or heat dissipation, the amount will be increased. Therefore, when installing the bearing, the remaining space of the bearing is generally filled with grease, and 1/3-1/2 of the remaining space of the bearing housing can be grasped, and it is easy to generate high temperature.
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