Cylindrical roller bearings are separable and very common too. The roller elements are cylindrical rollers make this kind of bearings can accommodate heavy load and even very heavy load, mainly to radial loads. The smaller friction between roller elements and rings make it can very suitable for high speed. There are different types: single row cylindrical roller bearings: NU series, NJ series, NUP series, N series, NF series etc. double row cylindrical roller bearings: NNU series and NN series.

The rollers of cylindrical roller bearings are a key component. Their geometry, the so-called logarithmic profile, provides an optimum stress distribution in the contact zones in the bearing, their surface finish maximizes lubricant film formation and optimizes rolling motion of the rollers. The benefits derived from this compared with traditional designs include enhanced operational reliability and a greater insensitivity to misalignment.

Specification:

Cylindrical roller bearings feature:
1. Roller in line contact with the raceway or repair offline contacts, radial load capacity, suitable to withstand heavy loads and shock loading.
2. Friction coefficient is small, suitable for high-speed, speed close to the deep groove ball bearings.
3. N type and NU type axial movement may be able to adapt to errors due to thermal expansion or installation of the shaft and housing caused by changes in relative position can be used for supporting the free end.
4. On the Block Hole axis or higher, and bearing outer ring axis relative deflection after installation should be strictly controlled to avoid contact stress concentration.
5. Inner or outer detachable, easy installation and removal.
Main use:
Medium and large motors, rolling stock, machine tool spindles, internal combustion engines, generators, gas turbines, gear box, rolling mill, vibrating screen, and lifting the transport machinery.