INA RNA4910-RSR-XL needle roller bearing

INA RNA4910-RSR-XL is a reference of needle roller bearing, within Bearings. Request a quote for RNA4910-RSR-XL via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The INA needle roller bearing of the RNA-RSR-XL series is a radial bearing without an inner ring, with a needle cage and contact seal. It is used when the shaft is ground and hardened directly as a raceway, which allows reducing the radial section and the weight of the assembly. It is a common solution in applications where space is limited and high load capacity is required in a small diameter. MR Accesorios Industriales carries this line as a brand.

The series designation is read in blocks: RNA indicates a needle roller bearing without an inner ring; the number that follows, as in RNA4900-RSR-XL or RNA4905-RSR-XL, identifies the size and the dimension series. The suffix RSR indicates that the bearing is sealed on both sides with a contact seal, which retains lubrication and blocks the entry of contaminants. XL is the identification of the current generation of the INA catalogue. Recognizing these blocks allows you to order the correct code without ambiguity.

This type of bearing is found in equipment where radial space is critical: gearboxes, pumps, compressors, textile machines, packaging equipment and compact transmissions. In Argentine industry it appears in production line maintenance, road equipment, agricultural machinery and power transmission assemblies. Since it has no inner ring, the shaft must meet the hardness and roughness required by the raceway; that is why it is chosen in designs where the shaft is already prepared for that function.

To select correctly, verify that the shaft has the appropriate hardness and grinding to act as a raceway. The RSR seal is a contact seal and requires a support surface on the shaft in good condition so it is not damaged. Lubrication must be the one indicated for the working temperature and speed; the seal helps to preserve it, but does not replace a lubrication plan. During mounting, take care with alignment and avoid impacts on the seal edges. If the shaft is not prepared, it is advisable to evaluate a variant with an inner ring.

Needle roller bearings are marketed under different nomenclatures depending on the manufacturer. Series with sealing and generation suffixes may have equivalents in other brands, but dimensions and tolerances do not always match. Do not replace by code similarity: compare diameter, width and seal type with the technical data sheet. If you have doubts, the safest path is to provide the complete code that appears on the bearing or on the equipment drawing.

If you need an INA needle roller bearing of the RNA-RSR-XL series, write to us on WhatsApp with the exact code or the equipment model. At MR Accesorios Industriales we reply shortly with the quote and the technical information you need to confirm the variant. We can also help you identify the replacement if you send us the housing and shaft dimensions.