The cylindrical roller skf bearings in two rows are distinguished by a small section, a large load capacity and high rigidity. They are mainly used in machine tools, rolling mills, grilles, shredders or grandparents reducers.

The cylindrical roller bearings with SKF two rows are mainly types NNU and NN The bearings are dismantled, whose ring shoulders fixed and the roller can be mounted separately from the other ring, or all of whose components can be mounted separately. The assembly, testing and maintenance of these bearings are simplified.

The cylindrical roller bearings in two rows are manufactured with a cylindrical or conical bore. Roller-type NN generally have a conical bore. The mounting bearing conical bore allows for a certain radial internal or pre-given.

These bearings, with the exception of bearings type NNUP permit within certain limits axial movement between the shaft and landing in the rotation itself.