The rollers in a single row cylindrical roller bearing are always guidedbetween the integral "open" flanges on one of the rings. These "open"flanges combined with the specially designed and surface treated rollerends, provide improved lubrication, reduced friction and consequentlylower operating temperature.
The ring with the integral flanges together with the cylindrical rollerand cage assembly can be separated from the other ring. This results ineasy mounting and dismounting, particularly where the load conditionsare such that interference fits are required for both rings.
Single row cylindrical roller bearings can accommodate heavy radialloads and high speeds. They are manufactured in several differentdesigns, the main difference being in the configuration of the flanges.The most popular are the NU, N, NJ and NUP designs.