NSK RLM Series Needle Roller Bearings
The NSK RLM series needle roller bearing is a small-diameter cylindrical roller bearing designed to withstand high radial loads in very small radial spaces. It is used in applications where the design requires a low profile and high load capacity, such as machine tools, transmissions, pumps and automation equipment. MR Accesorios Industriales sells this series in Buenos Aires, Argentina, and advises you on selecting the right size for your application.
The RLM series designation is interpreted from its numbers: the first digits indicate the bore diameter and the following ones the overall width of the bearing. For example, RLM158 has a 15 mm bore diameter and 8 mm width; RLM815, an 8 mm diameter and 15 mm width; RLM912, a 9 mm diameter and 12 mm width. This nomenclature allows the main dimensions to be identified quickly. The RLM series is characterized by its construction without an inner ring, which reduces the required radial space.
These bearings are used in industries such as metalworking, automotive, food and packaging, in components such as gearboxes, oil pumps, compressors, textile machines and packaging equipment. In Argentina, they are common in the repair of agricultural and industrial machinery, where robustness and reliability are required. Their ability to withstand high radial loads in confined spaces makes them ideal for compact transmissions and cam mechanisms.
To correctly select an RLM bearing, take into account the shaft diameter, the available width and the expected radial load. It is essential to verify the hardness and roughness of the shaft, since the inner raceway is formed directly on it. Proper lubrication and sealing of the assembly extend service life. During mounting, ensure precise alignment and avoid impacts that could damage the rollers or the cage. If you need technical assistance, the MR Accesorios Industriales team can help you.
As for equivalents, NSK RLM series needle roller bearings can be interchanged with products from other brands that follow the same dimensional nomenclature, such as INA, SKF or NTN, as long as the dimensions and load capacity match. It is important to verify the tolerances and the cage type. If you have another brand's part number, we can quote you the equivalent option. MR Accesorios Industriales sells the NSK brand, among others.
To request a quote for your NSK RLM series needle roller bearing, send the full part number on WhatsApp. We will reply shortly with availability and commercial terms. If you cannot find the size you are looking for, write to us with the part number or the dimensions you need and we will quote it for you.




