cylindrical roller bearing / double-row / radial / for machine tools

These double-row, or two-row, cylindrical bearings have been specifically designed to provide extra strength when carrying radial loads. The dimensions and diameter under the rollers (NNU style) and the diameter over the rollers (NN style) are kept to an ISO/DIN standard as the bearing types are interchangeable. To enable interchange with competitor inner rings, the interchangeability is only designed for the ring, not the rollers.

The cylindrical bearings range in size from 80mm to 2000mm and are sold as a complete assembly. They are available in the same size range as a single row product. The current designs use NN and NNU nomenclature. The cage has a standard design of a drilled pocket, finger-size bronze retainer. The bearings are utilized in applications including rolling mills, machine tools, crop shear and gear drives.