NTN RNA4904RCT needle roller bearing

NTN RNA4904RCT is a reference of needle roller bearing, within Bearings. Request a quote for RNA4904RCT via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The NTN RNA49 series needle roller bearing is a single-row radial bearing without an inner ring, designed to carry high radial loads in very small radial spaces. It mounts directly on a hardened and ground shaft, which simplifies the assembly and reduces weight. It is a common solution in applications where the available outside diameter is limited but high load capacity and rigidity are required.

The RNA49 series designation reads as follows: RNA indicates a needle roller bearing without an inner ring; 49 is the dimension series, which defines the outside diameter and width according to the shaft diameter; RCT indicates a stamped steel cage with surface treatment. For example, RNA49/28RCT and RNA4904RCT share the 49 series but differ in shaft diameter and in the code that identifies it. With the complete code you can request the exact quote from us.

These bearings are used in industries such as metalworking, food, textile and agricultural machinery. In Argentina they are commonly found in gearboxes, pumps, compressors, machine tools and transmission equipment. Their ability to run at high speeds and carry radial loads makes them suitable for pulleys, rollers and transmission shafts where space is critical.

To select the correct bearing, take into account the shaft diameter, the outside diameter and the width your application requires. Since it has no inner ring, the shaft must be hardened and ground with the appropriate hardness and roughness to serve as a raceway. Lubrication can be grease or oil; in contaminated applications, consider external seals. Alignment between the shaft and the housing is essential to avoid parasitic axial loads.

NTN RNA49 series needle roller bearings can be interchanged with those of other brands that follow the same dimensional designation, such as SKF, FAG or NSK. The key is to respect the shaft diameter, outside diameter and width dimensions, and to verify that the shaft meets the required hardness and finish. If you have another brand's code, we can help you find the right equivalent.

If you need a quote for an NTN RNA49 series needle roller bearing, write to us on WhatsApp with the code or the dimensions of your application. At MR Accesorios Industriales we advise you so you choose the right option and we quote you promptly.