NTN RNA4932 needle roller bearing

NTN RNA4932 is a reference of needle roller bearing, within Bearings. Request a quote for RNA4932 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

NTN RNA series needle roller bearings are single-row needle units without an inner ring, designed to withstand high radial loads in very small radial spaces. They are mounted directly on a hardened and ground shaft that acts as the raceway, which simplifies the design and reduces the weight of the assembly. They are ideal for applications where the outer diameter is limited and high load capacity is required, such as transmissions, pumps, compressors and textile machinery.

The RNA series designation is interpreted as follows: the letters RNA indicate a needle roller bearing without an inner ring; the numbers that follow identify the dimension series and the size. For example, RNA59/22 and RNA59/32 correspond to the RNA59 series, while RNA497 and RNA499 belong to the RNA49 series, and RNA4822, RNA4824, RNA4826 and RNA4828 to the RNA48 series. The codes of each series indicate the size according to the standard. The number after the slash in the RNA59 series indicates the shaft diameter in millimeters, while in the RNA48 and RNA49 series the numeric set defines the size according to standard. Each series has a specific section profile and load capacity.

In Argentine industry, these bearings are used in a wide variety of equipment: transmission boxes, water and oil pumps, air compressors, textile machines, packaging equipment, cranes and agricultural machinery. Their ability to withstand radial loads in confined spaces makes them common in the automotive sector, in the metallurgical industry and in food and beverage plants. MR Accesorios Industriales sells NTN needle roller bearings to meet these needs with technical advice.

To correctly select an RNA bearing, take into account the radial load, the rotation speed and the available space. The shaft must be hardened and ground with a minimum hardness of 58 HRC and suitable roughness to serve as a raceway. Lubrication can be grease or oil, and it is essential to maintain precise alignment between the shaft and the housing to avoid additional stresses. The sealing of the assembly depends on the application design; in many cases external seals are required. Always verify the internal clearance and the shaft and housing tolerances.

NTN needle roller bearings are interchangeable with those of other brands that follow the same dimensional standards, such as SKF, FAG, NSK or Timken, as long as the series and size code match. When looking for a replacement, compare the main dimensions (shaft diameter, outer diameter and width) and the dynamic and static load capacity. If you have the code from another brand, we can help you find the exact equivalent. Interchangeability is not always direct between series; consult us with your application data.

If you need an NTN RNA series needle roller bearing, write to us on WhatsApp with the code or the measurements of your application. At MR Accesorios Industriales we quote the exact reference and advise you so you choose the right option. We are here to help you keep your equipment running.