Analysis of the roots of two types of cylindrical roller bearings

Source: Bearing network time: 2018-03-31

/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';

The roller of a cylindrical roller bearing is usually guided by two ribs of a bearing ring; the cage, the roller and the guiding ferrule form an assembly; the bearing sleeve can be separated from the other bearing sleeve; The bearing device and disassembly are more convenient; especially when the inner and outer rings are in interference with the shaft and the shell, the strength is more obvious.
Such bearings are usually only used to accept radial loads; as long as the single-row bearings with ribs on the inner and outer rings accept small axial loads or large intermittent axial loads.
Compared with the deep groove ball bearing with the same dimensions; this kind of bearing has a large radial load. However, the machining requirements of the shaft, housing hole and other related parts cooperating with such bearing are higher.
Single row cylindrical roller bearings; according to the different ferrule ribs: N0000 type (2000 type) with no rib on the outer ring and double rib on the inner ring, NU0000 with no rib on the inner ring and double rib on the outer ring Type (32000 type), NJ0000 type (42000 type) with double ribs on the outer ring and single rib on the inner ring, NF0000 type (12000 type) with double ribs on the inner ring and single rib on the outer ring, and double ribs on the outer ring The inner ring is a single rib and a flat retaining ring of NUP0000 type (92000 type) and so on.
Double row cylindrical roller bearings are divided into cylindrical inner hole and conical inner hole. They have the advantages of simple layout, good rigidity, large bearing capacity, small deformation after load, suitable for machine tool support, NN type and NNU type. The two layout bearings do not constrain the relative axial displacement of the shaft and the casing; they are often used as non-locating bearings.
FC, FCD, FCDP four-row cylindrical roller bearings; radial load can be high; but can not accept axial force. Because the inner ring has no ribs; so the inner ring and outer components can be separately installed (with a full set of rollers and cages) ). Used in rolling mills or heavy machinery.

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