Full complement cylindrical roller bearings are separable bearings

Full complement cylindrical roller bearings are separable bearings. According to the number of rolling elements used in the bearing, there are different structures such as single-row, double-row and four-row cylindrical roller bearings. Among them, the single-row cylindrical roller bearing with cage is the most widely used. The installation and disassembly of this kind of bearing are more convenient, especially when the inner and outer rings are in an interference fit with the shaft and the housing, it shows its advantages. There is a modified line contact between the roller and the raceway, so the edge stress can be eliminated. Full complement cylindrical roller bearings are divided into N type with no ribs on the outer ring and double ribs on the inner ring and NU type structure with no ribs on the inner ring and double ribs on the outer ring according to the rib structure of the ring. Both N-type and NU-type bearings can allow the shaft to move in two directions relative to the bearing housing within a certain range, and are mostly used as non-locating bearings. The NJ type is characterized by a double rib on the outer ring and a single rib on the inner ring, while the NF type has a double rib on the inner ring and a single rib on the outer ring. produce axial displacement. According to different applications, NU type and NJ type can also be used in combination with HJ type bevel ring. Full complement cylindrical roller bearings have two types of structures: cylindrical inner hole and conical inner hole. This type of bearing has the advantages of compact structure, high rigidity, large bearing capacity, and small deformation after being loaded. It is especially suitable for machine tool spindle support. NN type bearings The structural feature is that the inner ring has ribs on both sides and the outer ring has no ribs, while the NNU type bearing has ribs on both sides of the outer ring and no ribs on the inner ring. Relative axial displacement, used as a non-locating bearing. It is used for heavy machinery such as cold and hot rolling mills and embryo openers. The bearings are separated, and the bearing rings and rolling element components can be easily separated, and the cleaning, inspection and disassembly of the bearings are very convenient. Bearings with suffix E are reinforced cylindrical roller bearings that have been optimized in recent years. They have high load capacity and should be preferred. Cylindrical roller bearings generally do not allow the shaft to tilt relative to the housing. However, for single-row cylindrical roller bearings, under light load conditions, the inner and outer rings are allowed to incline each other by 2. Under larger load conditions, the allowable error can be slightly larger, but it must not exceed 4. In addition, Longma also produces cageless full complement cylindrical roller bearings, as well as various deformed structural bearings based on the above structural types.

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