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Cylindrical roller bearing / double-row - NN series
SKF introduces super-precision double row cylindrical roller bearings designed with low cross sectional height, high load carrying capacity, high rigidity and high-speed capability. The bearings are particularly applicable for machine tool spindles where the bearing arrangement demands accommodation of heavy radial loads and high speeds, while providing a high degree of stiffness. NN design cylindrical roller bearings features rollers guided between integral flanges on the inner ring with no flanges on the other ring. The bearings are separable which means that the bearing ring with integral flanges, together with the roller and cage assembly can be separated from the flangeless ring for mounting and dismounting operations. Double row cylindrical roller bearings are available with either a cylindrical or a tapered bore (taper 1:12) in a range from 25 to 460 mm. the bearings are designed with effective facilities for efficient lubrication.