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Cylindrical Roller Bearings are designed to carry heavy radial loads. These bearings are made with a single row, two rows, or multi-rows of rolling aspects to meet an application's radial load requirement. Offered in numerous standard series and configurations, they are extensively used in numerous markets. The combination of high load capability, moderate speed rating, and market interchangeability make it among the most popular bearing styles. These are produced in ISO series metric, ABMA series metric and inch, journal type, Full Enhance series, multi-row series, and cluster mill sizes. These bearings are dimensionally interchangeable to exact same numbered and sized bearings in the industry. Parts of journal bearings and other standard series are made interchangeable with other producer's parts. Lots of mounting arrangements can be attained with the numerous configurations available with same load capacity for an offered I.D., O.D. and width. Our round roller bearings can be produced in sizes from 3" bore diameter to 84" outside diameter. Internal radial clearances and cage styles can be engineered to your specific application when special applications are encountered.

In bearings of this type, the cylindrical rollers are in linear contact with the raceways. They have a high radial load capacity and are suitable for high speeds.

There are different types designated as NU, NJ, NUP, N, NF (for single-row bearings), NNU, and NN (for double-row bearings depending on the design or absence of side ribs).

The outer and inner rings of all types are separable.

Some cylindrical roller bearings have no ribs on either the inner or outer ring, so the rings can move axially relative to each other. These can be used as free-end bearings. Cylindrical roller bearings, in which either the inner or outer rings has two ribs and the other ring has one, are capable of taking some axial load in one direction Double-row cylindrical roller bearings have high radial rigidity and are used primarily for precision machine tools.

Pressed steel or machined brass cages are generally used, but sometimes molded polyamide cages are also used.

Depending on the existence of ribs on their rings, Cylindrical Roller Bearings are classified into the following types:

Types NU, N, NNU, and NN are suitable as free-end bearings. Types NJ and NF can sustain limited axial loads in one direction. Types NH and NUP can be used as fixed-end bearings.

NH-type cylindrical roller bearings consist of the NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars.

The inner ring loose rib of an NUP-type cylindrical roller bearing should be mounted so that the marked side is on the outside.

cylindrical roller bearings are available in many designs, series and sizes. The major design differences between the bearings presented in this section are in:
the number of roller rows (one, two or four)
the type of cage (with, without or special designs)
Bearings with a cage can accommodate heavy radial loads, rapid accelerations and high speeds.
Full complement bearings (without a cage) incorporate a maximum number of rollers and are therefore suitable for very heavy radial loads at moderate speeds.
SKF high-capacity cylindrical roller bearings combine the high load carrying capacity of a full complement bearing with the high speed capability of a bearing with cage.
the configuration of the inner and outer ring flanges (position and number of guide flanges)