Single row cylindrical roller bearings are separable bearings. The rollers are guided by the two ribs of bearing rings. The bearings with cage are units comprising solid inner and outer ring together with cylindrical roller and cage assemblies. Therefore, these bearings are easy to be mounted and dismounted, especially where the load conditions are such that interference fits are required for both rings.
Single row cylindrical roller bearings are commonly used to carry radial load and, due to the line contact of the rollers and raceways, are suitable for higher radial loading capacity and good impact resistance than radial ball bearings with same dimensions, but they can ‘t accommodate axial loads.
There are several different designs. The structures are distinguished by ribs. The most popular types are the N, NU, NJ, NF.
N design
---The inner ring of this type has two ribs and outer ring without rib. The bearings are commonly used as non-locating bearings.
NU design
---The outer ring of this type has two ribs and inner ring without rib. The bearings are commonly used as non-locating bearings.
NJ design
---The outer ring of this type has two ribs and inner ring with one rib. The bearings are suitable for the axial locations of the shaft in one direction.
NF design
---The inner ring of this type has two ribs and outer ring with one rib. The bearings can be used as locating bearings, they can accommodate axial loads in both directions.