Full complement cylindrical roller bearing is a type of bearing, which means that because there is no cage, it can accommodate a very large number of rollers. It is generally used in machinery. Most people only know about bearings, but they don't know much about full complement cylindrical roller bearings. Next, the editor will explain to friends the type and basic layout of full complement cylindrical roller bearings. What is a full complement cylindrical roller bearing? Full complement cylindrical roller bearings are designed to withstand heavy loads. At the same width, compared with the traditional bearing with cage, this kind of bearing has a very high load capacity, a small radial section, which can save space, but the speed is relatively low. In order to make the bearing work normally, in the case of continuous operation, the bearing must be subjected to a certain very small load, namely C/P<25. Otherwise, the wear will be aggravated due to insufficient lubrication and high-speed operation. All multi-row cylindrical roller bearings have a lubrication groove and lubrication holes in the outer ring. Full complement cylindrical roller bearing example 1. It has two inner rings. The two inner rings are connected together by a clamping ring, which cannot be separated. Because the distance between the two rows of rollers is large, the overturning moment can also be suffered. There are two retaining grooves on the surface of the outer ring, which can be positioned axially. This type of bearing is equipped with contact sealing rings on both sides and lithium base grease inside, and the operating temperature is limited to -40℃～+80℃. Under certain conditions, this type of bearing does not need maintenance, but when there is water vapor or pollution during operation, and it is often operated at medium or high speed, it must be lubricated. In places where oil lubrication is used, the sealing ring needs to be removed, and the grease in the bearing should be cleaned. When oil lubrication is used, the rotation will be improved by 30. 2. It is a non-sealed bearing. It is fixed in one way, so the outer ring cannot bear the axial load. The divided outer ring is completely the same, each with a rib, which can be used for axial positioning in two directions. The inner ring has three ribs. The outer ring has oil grooves and three lubrication holes. This series of bearings is usually oil lubricated. 3. It is a non-sealed bearing, the outer ring has no ribs, and has oil grooves and three lubrication holes. The inner ring has three ribs. A fixed ring is installed in the center of the outer ring between the two rows of rollers, which can prevent the rollers from falling out and keep the bearing as a whole. This series of bearings can allow a certain axial displacement between the shaft and the bearing seat to be generated in the bearing. Because it can be used as a floating end bearing 4, the outer ring has a single rib, and there is a lock ring on the side without a rib, which can be used for one-way positioning of the shaft. Axial positioning shift. 5. It is used for deep and heavy loads and low-speed places. It has self-locking roller set. Even if the inner ring is removed, the rollers will not be scattered. Therefore, this type of bearing is easy to install and destroy, and can withstand one-way axial load for one-way positioning. . Basic layout of full complement cylindrical roller bearings 1. Basic layout of single row full complement cylindrical roller bearings Single row full complement cylindrical roller bearings can withstand very large radial loads, as well as directional axial loads, and axial positioning A homogeneous bearing guarantee with a symmetrical arrangement can be used. Bearings of the NCF 29V and NCF 30V series have two fixed ribs on the inner ring and one rib on the outer ring, and they can only withstand axial loads that are biased towards the fixed rib of the outer ring. NJ23VH series bearings can benefit from axial loads biased towards the inner ring rib, and their rollers are fixed in the outer ring and will not come out even if the inner ring is removed. When the two ferrules are tightly combined, they are also easy to be installed and destroyed separately. 2. The basic example of double-row full-complement cylindrical roller bearings Double-row full-complement cylindrical roller bearings can withstand not only very large radial loads and axial loads, but also overturning moments. Therefore, they are long used as fixed bearings. The outer ring of the NNC 49V series bearing has a lubricating oil groove and geometric lubricating oil holes, which can also be lubricated in the shaft during operation. Both ends of NNF50B.2LS.V and NNF50C.2LS.V series bearings accept contact seals, and the seals are filled with grease. In the case of better application conditions, the grease can reach the working life of the bearing. Lubrication is possible through lube grooves and lube holes on the outer ring. If the same several bearings are placed on a shaft, the rotational speed of the outer ring can be different because the outer ring is narrower than the inner ring. This is somewhat suitable for the pulley mechanism. In order to easily fix the pulley to the outer ring of the bearing, there are annular grooves on both ends of the outer ring of the bearing that can be installed with elastic retaining rings.
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