In the field of rolling mills we have conceived a patented cage which is mounted in our 4-row cylindrical roller bearings (multirow-multiroll / multi-track) for the necks of hot and non-hot rolling mills cylinders, with consequent improvement of the functionality of the bearing, guaranteeing better performances in terms of load capacity, speed and consequently in duration. These bearings are characterized by higher load ratings and admissible speeds than traditional bearings, while ensuring every match and interchangeability.