NTN NA4948 needle roller bearing

NTN NA4948 is a reference of needle roller bearing, within Bearings. Request a quote for NA4948 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The NTN NA series needle roller bearing is a radial bearing with high load capacity in a minimal space. Its design with an inner ring and cage-guided needles allows it to be mounted directly on machined shafts, ideal when the available outer diameter is limited. It is used in machine tools, transmission equipment, pumps and industrial applications where the load-to-space ratio is critical. MR Accesorios Industriales sells the NTN NA series in Buenos Aires, Argentina.

The NA series designation is read in blocks: the letters NA indicate a needle roller bearing with an inner ring, and the number that follows defines the size and the dimension series. For example, NA59/22 corresponds to the NA59 series with a 22 mm bore; NA497 and NA499 belong to the NA49 series with different sizes; NA4822, NA4824 and NA4826 are from the NA48 series. The codes of each series indicate the size according to the standard. The suffixes, when they appear, indicate sealing, cage or tolerance variants. To identify your bearing, send us the complete code.

In Argentine industry, NTN NA series needle roller bearings are used in machine tool spindles, gearboxes, gear pumps, compressors, lifting equipment and agricultural machinery. Their ability to withstand high radial loads with a low profile makes them common in applications where axial and radial space is limited. They are also used in support rollers and cam systems. MR Accesorios Industriales supplies them to workshops, factories and industrial maintenance throughout the country.

To correctly select an NA bearing, check the bore, outer diameter and width according to the code. Consider the type of sealing: open for oil lubrication, or with seals to retain grease and exclude contaminants. The steel or polyamide cage influences the permissible speed. During installation, ensure precise alignment and proper shaft fit; the inner ring requires an interference fit. Lubricate with grease or oil according to the application and avoid pure axial loads.

NTN NA series needle roller bearings are interchangeable with those of other brands that follow the same dimensional designation, such as SKF, FAG, NSK or KOYO. The key is to respect the bore, outer diameter and width dimensions, and the cage type. If another brand's code does not match exactly, we can identify the equivalent from the dimensions or the original number. Ask us with the part data and we will advise you.

To request a quote for your NTN NA series needle roller bearing, write to us on WhatsApp with the complete code or the shaft and housing dimensions. At MR Accesorios Industriales we provide the quote promptly and tell you the compatible alternative if you need it. We can also advise you on installation and proper lubrication for your equipment.