SKF NKX 45 Z needle roller bearing

SKF NKX 45 Z is a reference of needle roller bearing, within Bearings. Request a quote for NKX 45 Z via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The SKF NKX Z series needle roller bearing is a combined bearing that integrates a radial needle roller and cage assembly and an axial ball washer, all in a compact assembly with a reduced section. It is used when there is little space and simultaneous radial and axial loads must be supported, for example in gearboxes, pumps and machine tools. MR Accesorios Industriales sells this SKF line with technical advice so you can choose the correct size for your mounting.

The designation of the NKX Z series is read as follows: NKX identifies the category of combined needle roller bearings with an axial component, and the number that follows indicates the shaft diameter in millimeters. The suffix Z indicates that the bearing incorporates a lateral shield plate, which prevents the entry of contaminants and retains lubrication. Thus, an NKX 20 Z is mounted on a 20 mm shaft, while an NKX 35 Z corresponds to a 35 mm shaft. The series covers a range of sizes for different shaft sizes.

These bearings are used in industries where radial space is critical and combined loads are present: machine tools, pumps, compressors, gearboxes, transmission equipment and lifting systems. In Argentina, they are commonly found in the metalworking, food and automotive sectors, both in production lines and in maintenance. Their compact design allows replacing bulkier assemblies, simplifying housing design and reducing assembly weight.

To select the right bearing, take into account the radial and axial load it must withstand, the rotation speed and the environmental conditions. The Z seal is suitable for environments with moderate dust or dirt; if there are liquids or humidity, other protections should be evaluated. During mounting, verify shaft and housing alignment, and make sure the internal clearance is adequate. Lubrication must be the one indicated by the manufacturer, with just the right amount to avoid overheating. Mounting with incorrect fit can reduce bearing service life.

As for equivalents, combined needle roller bearings with axial ball washers are available from different brands under their own nomenclatures. If you need to replace an existing bearing, the safest approach is to compare the main dimensions —shaft diameter, outer diameter and width— and the load capacities. Not all brands use the same suffixes to indicate protections or tolerances. Therefore, before interchanging, consult our technical team to validate dimensional and functional compatibility.

If you already have your bearing part number, write to us on WhatsApp and we will send you the quote. At MR Accesorios Industriales we work with SKF and other brands so you can find the part your equipment needs. Send us the complete part number —for example, NKX 25 Z— and we will quote you.