Cylindrical Roller Bearings Features Introduction:
Cylindrical Roller Bearings Features are as below,
1. The roller and the raceway are in line contact, and the radial load capacity is large, which is suitable for bearing heavy loads and impact loads.
2. The friction coefficient is small, suitable for high speed, and the limit speed is close to the deep groove ball bearing.
3. N type and NU type cylindrical roller bearings can move axially, which can adapt to the change of the relative position between the shaft and the housing caused by thermal expansion or installation error. Users can use it as a free end support. The inner ring or outer ring can remove for easy installation and disassembly.
4. The processing requirements for the shaft and the seat hole are relatively high. After the bearing is installed, the relative deflection of the inner and outer ring axes should be strictly under control to avoid contact stress concentration.
5. For double-row cylindrical roller bearings with 1:12 taper in the inner hole, users can adjust the radial clearance. Moreover, the radial rigidity is high, which is suitable for the spindle of the machine tool.
N and NU Type Cylindrical Roller Bearings Features:
1. Large carrying capacity, rated dynamic load ratio 1.5～3
2. Cannot bear axial load
3. Cannot limit the axial displacement of the shaft and housing
4. It is a separable bearing, which is very convenient to install and disassemble, especially when the inner and outer rings are in interference fit with the shaft and housing, its advantages are more obvious
5. High limit speed
6. Often used as a swimming support
NF and NJ Type Cylindrical Roller Bearings Features:
1. Large radial load capacity, rated dynamic load ratio 1.5～3
2. Can bear small unidirectional axial load
3. Can limit the unidirectional axial displacement of the shaft and the housing
4. It is a separable bearing, which is very convenient to install and disassemble, especially when the inner and outer rings are in interference fit with the shaft and housing, its advantages are more obvious
5. High limit speed
6. User need to use them in pairs
NUP and NH(NJ+HJ) Type Features:
1. Large carrying capacity, rated dynamic load ratio 1.5～3
2. Bearing can bear small bidirectional axial load
3. Can limit the bidirectional axial displacement of the shaft and the housing
4. It is a separable bearing, which is very convenient to install and disassemble, especially when the inner and outer rings are in interference fit with the shaft and housing, its advantages are more obvious
5. High limit speed
6. For occasions with small axial installation dimensions
RN Type Features:
1. Rated dynamic load ratio 1.5～3
2. Can not bear axial load, can not limit the axial displacement of shaft and housing
3. The journal surface or housing hole surface in contact with the bearing is directly used as the inner and outer raceway surfaces of the bearing, and its surface hardness, machining accuracy and surface quality should be similar to the raceway of the ring
4. High limit speed
5. It occupies a small radial size and is used in components with limited radial size
NN and FC Type Features:
1. Large radial load capacity, rated dynamic load ratio 2.6～5.2
2. Cannot bear axial load
3. Cannot limit the axial displacement of the shaft and housing
4. High limit speed
5. There are two structures of cylindrical bore and tapered bore. Bearings with tapered bore can be micro-adjusted bearing clearance
6. Compact structure, separate type, high rigidity, small deformation after load, can be used as a moving support, especially suitable for machine tool spindle bearings
FC, FCDP and FCD Type Features:
1. The radial load capacity is very large, the rated dynamic load ratio is 4.5～6
2. Cannot bear axial load
3. Cannot limit axial displacement
4. High limit speed
5. The bearing ring and rolling element components can be easily separated, and the cleaning, inspection, assembly and disassembly of the bearing are very convenient
6. Compact structure, separate type, high rigidity. Mainly used in heavy machinery and steel rolling machinery
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