Cylindrical roller bearing de doble hilera NTN NNU4988K

NTN NNU4988K is a cylindrical roller bearing de doble hilera reference, within Bearings. Request a quote for NNU4988K via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The NNU double row cylindrical roller bearing is a high radial capacity component designed to withstand high loads and considerable speeds. It is used in applications where rigidity and precision are required, such as machine tools, mining equipment and power transmission. MR Accesorios Industriales sells the NTN brand, with more than 80 years of experience in the Argentine market.

The NNU series designation is interpreted as follows: the letters NNU indicate a double row cylindrical roller bearing with a flangeless inner ring and a flanged outer ring. The final K suffix indicates a tapered bore, which facilitates mounting and adjustment on shafts. For example, NNU49/500K has a bore diameter of 500 mm, while NNU4920K corresponds to a bore diameter of 100 mm. These references are part of the NNU series, available in different sizes to suit each application.

In Argentine industry, NNU bearings are used in mining equipment, cement plants, steel plants and high-precision machine tools. They are also present in gearboxes and gear units where radial loads are significant. Their ability to withstand combined loads and their rigidity make them suitable for milling machine and drilling machine spindles. MR Accesorios Industriales sells them to supply the country's main productive sectors.

To correctly select an NNU bearing, take into account the radial load it will have to withstand, the rotation speed and the environmental conditions. The tapered bore requires an interference fit on the shaft, which guarantees secure fastening. Lubrication can be with grease or oil, depending on the application, and maintaining precise alignment is essential to avoid premature wear. Sealing will depend on the environment: in contaminated environments, additional protection is recommended.

NTN NNU bearings can be interchanged with those of other brands that follow the same international nomenclature. When looking for equivalents, it is important to verify the main dimensions and tolerances, since they can vary between manufacturers. The NNU series is standard on the market, which makes it easy to find compatible alternatives. If you have doubts, consult us with the part number and we will advise you.

To request a quote for your NNU bearing, send us the complete part number by WhatsApp. At MR Accesorios Industriales we respond promptly with the information you need. We can also advise you if you are looking for a specific variant within the series. Write to us and we will help you find the right solution for your equipment.

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