Cylindrical roller bearing SKF RNU 306

SKF RNU 306 is a cylindrical roller bearing reference, within Bearings. Request a quote for RNU 306 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

RNU bearings are cylindrical roller bearings without an inner ring, designed to support high radial loads and high speeds. They are mounted directly on the shaft, which acts as the raceway, allowing the radial size of the assembly to be reduced. SKF manufactures them with tight tolerances and a steel cage, ideal for power transmission, pumps, compressors and industrial machinery. At MR Accesorios Industriales we sell them and advise on their correct selection and mounting.

The RNU designation identifies cylindrical roller bearings without an inner ring. The numbers that follow indicate the size: for example, RNU 204, RNU 205, RNU 305, RNU 306 and RNU 407. The first digit relates to the diameter series and the last two to the diameter of the shaft on which it is mounted. Thus, the numeric suffix allows you to quickly locate the bearing in the catalog according to the shaft size and the required load capacity.

These bearings are used in applications where high radial load capacity and rigidity are needed, such as gearboxes, centrifugal pumps, compressors, industrial fans and machine tools. In Argentina, they are common in the food, petrochemical and cement industries and in mining equipment. Their design without an inner ring facilitates mounting on shafts that are already hardened and ground, and allows for more compact assemblies.

To select an RNU, take into account the diameter and hardness of the shaft, which must act as a raceway with the appropriate roughness. Verify the internal clearance and the type of cage according to speed and load. Lubrication can be grease or oil, and it is essential to maintain alignment between the shaft and the housing to avoid parasitic stresses. Sealing of the assembly protects against contaminants and lubricant loss.

SKF RNU bearings are interchangeable with those of other brands that follow the same dimensional designation, such as FAG, NSK or NTN, as long as the specified tolerances and clearance are respected. When replacing, compare not only the part number but also the execution (cage, heat treatment, precision). MR Accesorios Industriales sells SKF and can advise you on the appropriate equivalence for your equipment.

If you need an RNU bearing for your machine, send us the complete part number via WhatsApp. At MR Accesorios Industriales we help you identify the correct part and resolve doubts about mounting or interchangeability. Write to us and we will respond shortly.

This description provides guidance on the product type. Check the configuration and dimensions of this reference.