Needle roller bearing INA NK19/20-XL

INA NK19/20-XL is a needle roller bearing reference, within Bearings. Request a quote for NK19/20-XL via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The INA NK-XL series needle roller bearing is a single-row radial bearing with a machined outer ring and no inner ring, designed to withstand high radial loads in very tight mounting spaces. It is used in applications where the shaft acts directly as the raceway, which simplifies the design and reduces the weight of the assembly. MR Accesorios Industriales supplies this series with the technical assistance needed to select the correct part number for each application.

The NK-XL series designation is read as follows: the letters NK identify a needle roller bearing with a machined outer ring and no inner ring; the first number that follows indicates the bore diameter (for example, in NK12/12-XL the bore is 12 mm); the second number, separated by a slash, indicates the overall width of the bearing (in NK12/12-XL, 12 mm). The -XL suffix indicates the manufacturer's current design, with dimensional and load capacity optimizations. Thus, NK16/20-XL corresponds to a bearing with a 16 mm bore diameter and 20 mm width.

These bearings are used in a wide variety of industrial equipment in Argentina: machine tools, pumps, compressors, gearboxes, conveyors, packaging equipment and agricultural machinery, among others. Their ability to withstand significant radial loads with a very low height profile makes them ideal for gearboxes, shaft supports and mechanisms where radial space is critical. They are also used in applications requiring high rigidity and rotational precision, such as grinding machine spindles or milling heads.

To correctly select an NK-XL bearing, take into account the radial load it must withstand, the rotational speed, the available lubrication and the type of sealing required. Since they do not have an inner ring, the raceway must be machined directly on the shaft, with the appropriate hardness and roughness; otherwise, it is recommended to combine it with a suitable inner sleeve. During assembly, ensure precise alignment between the shaft and the housing, and verify the radial clearance according to the application. Lubrication can be grease or oil, and in contaminated environments additional seals or retainers should be provided.

Regarding equivalences and interchangeability, needle roller bearings without an inner ring from other brands can replace those of the NK-XL series as long as the main dimensions (bore diameter, outer diameter and width) and load capacities match. It is essential to verify the tolerances and the type of design (open or sealed) to ensure equivalent operation. For critical applications, always consult our technical team before defining a replacement.

If you need an INA NK-XL series needle roller bearing, write to us via WhatsApp with the complete part number (for example, NK12/16-XL) or the dimensions of your application. At MR Accesorios Industriales we advise you so you can choose the most convenient option and we coordinate the quote promptly.

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