INA NK30/20-TW-XL needle roller bearing

INA NK30/20-TW-XL belongs to needle roller bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for NK30/20-TW-XL and any equivalents.

When radial space is tight but loads are not, the INA NK-TW-XL needle roller bearing is a common choice. It has no inner ring, so the shaft itself serves as the raceway, provided it is hardened and ground. That keeps the bearing slim and light while still handling radial forces. You will find it in machine tools, transmission equipment and precision mechanisms. MR Industrial Accessories supplies this line to customers across the United States and Latin America.

The part number tells you a lot. Take NK30/20-TW-XL: NK means a needle roller bearing with a machined outer ring and no inner ring. The first number is the shaft diameter in millimetres, and the second is the cage width. TW points to a polyamide cage reinforced with glass fibres, which suits high speeds and moderate temperatures. XL marks the current generation of the product, with improvements in load capacity and service life. Reading these suffixes helps you pick the right variant.

These bearings show up in machine tool spindles, gearboxes, pumps, compressors, packaging lines and linear motion systems. You will also see them in automotive components such as gearboxes and oil pumps, and in agricultural machinery where dirt and intermittent loads are part of the job. Their low profile makes them useful when a redesign needs to save space without giving up load capacity.

Selection starts with the shaft. Because there is no inner ring, the raceway is ground directly on the shaft, so check hardness and roughness. Sealing matters too: in dusty or chip-heavy environments, add radial shaft seals or side covers. Grease or oil both work for lubrication, depending on speed and operating temperature. During mounting, keep the shaft and housing well aligned to avoid edge loads that shorten bearing life.

INA needle roller bearings can be interchanged with other European brands that use the same dimensional nomenclature, such as SKF, FAG or NTN, as long as diameter, width and load capacity match. In practice, you also need to verify cage type, internal clearance, and shaft and housing tolerances. For replacements, compare the technical specifications and ask a specialist.

Need an INA NK-TW-XL bearing? Send the complete part number or your application measurements on WhatsApp or by email. The team at MR Industrial Accessories replies promptly, can suggest equivalents and helps you choose the right variant.