NTN RNA4904RCT needle roller bearing

NTN RNA4904RCT 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 RNA4904RCT and any equivalents.

The NTN RNA49 series is a single-row radial needle roller bearing supplied without an inner ring. It is intended for arrangements where radial space is tight but the bearing still has to handle significant radial load and remain rigid. Because the inner ring is omitted, the bearing sits directly on a hardened and ground shaft, which keeps the assembly lighter and reduces the number of components to fit.

Reading the code helps you order the right part. The prefix RNA identifies a needle roller bearing with no inner ring. The number 49 is the dimension series, which fixes the outside diameter and width for a given shaft size. The suffix RCT refers to a stamped steel cage with surface treatment. Two examples from the same series are RNA49/28RCT and RNA4904RCT: both belong to series 49, but each has a different shaft diameter and its own identifying code. Send us the full code and we can quote it.

Typical applications include metalworking, food processing, textile and agricultural machinery. You will also find these bearings in gearboxes, pumps, compressors, machine tools and transmission equipment. They work well in pulleys, rollers and transmission shafts where the housing bore is limited and radial load capacity is still needed. Their design supports high running speeds.

Selection comes down to three dimensions: shaft diameter, outside diameter and width. Because there is no inner ring, the shaft itself becomes the raceway and must be hardened and ground to the correct hardness and roughness. Grease or oil lubrication is acceptable; in dirty environments, add external seals. Shaft and housing alignment matters, since misalignment introduces unwanted axial forces.

NTN RNA49 series bearings can be interchanged with other brands that use the same dimensional designation, such as SKF, FAG or NSK. What matters is matching shaft diameter, outside diameter and width, and confirming that the shaft meets the required hardness and finish. If you only have another brand's code, we can help you identify a suitable equivalent.

For a quote on an NTN RNA49 series needle roller bearing, send the code or your application dimensions by WhatsApp or email. We will help you confirm the right option and respond promptly.