Needle roller bearing NTN NK25/20RCT

NTN NK25/20RCT is a needle roller bearing reference, within Bearings. Request a quote for NK25/20RCT via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The NTN NK 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 small spaces. Its construction allows it to be mounted directly on a hardened and ground shaft, which simplifies the assembly and reduces weight. It is used in applications where the available outer diameter is limited but high load capacity is required, such as machine tools, power transmission equipment and automotive components.

The NK 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 indicates the bore diameter (in millimeters) and the second, after the slash, the overall width. The suffix RCT indicates that the bearing incorporates a double-lip contact seal, which retains grease and excludes contaminants. For example, NK20/16RCT has a 20 mm bore diameter and 16 mm width, while NK35/20RCT combines a 35 mm bore with 20 mm width. Find more sizes in the NK series at MR Accesorios Industriales.

These bearings are used in industries such as automotive (gearboxes, pumps), machine tools (spindles, guides), power transmission (pulleys, gears) and material handling equipment. In Argentina, we find them in production line maintenance, pumping equipment, compressors and agricultural machinery. Their ability to withstand high radial loads with a low profile makes them ideal for confined spaces where other bearings do not fit. MR Accesorios Industriales sells them throughout the country.

To correctly select an NK bearing, take into account the radial load, speed and environment. The RCT seal is suitable for environments with moderate dust or humidity, since the contact lip prevents particles from entering. The shaft must have a surface hardness and roughness compatible with the raceway, and it is essential to properly align the housing to avoid parasitic axial loads. Lubrication can be with high-quality grease; in high-speed assemblies, check the internal clearance and the cage type.

NTN NK series needle roller bearings can be interchanged with those of other brands that follow the same dimensional nomenclature, such as SKF, FAG or NSK, as long as the bore, outer diameter and width match. The seal suffix may vary between manufacturers (for example, RS, 2RS, etc.), but dimensional interchangeability is usually maintained. If you have the code from another brand, at MR we will indicate the exact equivalent and quote the part you need.

Do you need an NK needle roller bearing for your equipment? Send the code or dimensions via WhatsApp to MR Accesorios Industriales and we will quote you shortly. We work with the complete NTN line and can advise you on selecting the right seal and lubrication for your application.

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