Needle roller bearing NTN NK145/42＋IR130×145×42

NTN NK145/42＋IR130×145×42 is a needle roller bearing reference, within Bearings. Request a quote for NK145/42＋IR130×145×42 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The NTN NK+IR series needle roller bearing is a compact radial bearing that combines an outer ring with needles and a removable inner ring. It is used when radial space is limited and high radial loads must be supported with high rigidity. It is common in gearboxes, pumps, compressors and machine tools. MR Accesorios Industriales sells this series in Buenos Aires, Argentina, and quotes it on WhatsApp with the exact part number.

The NK+IR series designation reads as follows: NK identifies the needle roller bearing without an inner ring, and IR the inner ring supplied with it. The numbers after NK indicate the outer diameter and width, while those of IR correspond to the inner ring dimensions. For example, NK12/12＋IR9×12×12 has a 12 mm outer diameter and 12 mm width, with an inner ring of 9 mm bore, 12 mm outer diameter and 12 mm width. Likewise, NK120/40＋IR110×120×40 combines an NK120/40 bearing with an IR110×120×40 inner ring.

This type of bearing is used in industries where robustness and precision are critical: automotive, machine tools, mining equipment, cement plants and food plants. In Argentina it is common in reduction gearboxes, gear pumps, air compressors and milling machine spindles. Its ability to support high radial loads in tight spaces makes it ideal for compact transmissions and oscillating mechanisms.

To correctly select an NK+IR, radial load, rotational speed and internal clearance must be considered. Mounting requires proper alignment of the inner ring with the outer ring and adequate lubrication, whether grease or oil. Sealing will depend on the environment: in the presence of dust or moisture, additional protection is recommended. Shaft and housing tolerance affects operating clearance; verify the specifications before installing.

NTN NK+IR series needle roller bearings are interchangeable with those of other brands that follow the same dimensional nomenclature. If you have another brand's part number, we can identify the equivalent. Interchangeability is based on dimensions and load capacity, not on the exact part number. Ask us with the part number or measurements and we will tell you the compatible alternative.

At MR Accesorios Industriales we sell NTN's NK+IR series with more than 80 years of experience in the field. If you need a needle roller bearing with these characteristics, send us the part number on WhatsApp and we will quote it shortly. We can also advise you on the right lubrication and mounting for your application.

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