Needle roller bearing NTN NA4904RCT

NTN NA4904RCT is a needle roller bearing reference, within Bearings. Request a quote for NA4904RCT via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The NTN NA49‥R series needle roller bearing is a cylindrical roller bearing with a small diameter and a large number of rollers, designed to withstand high radial loads in tight spaces. It is used in applications where radial section is limited and high load capacity is required, such as machine tools, transmission equipment and industrial mechanisms. Its needle design allows uniform load distribution and high radial rigidity.

The designation of the NA49‥R series is interpreted as follows: the letters NA indicate that it is a needle roller bearing with inner ring, the number 49 corresponds to the dimension series, and the suffix R indicates a specific design feature, such as the cage type or surface treatment. The examples NA49/28RCT and NA4904RCT show how letters and numbers are combined to identify each size; the suffix RCT provides additional information about the internal design. To select the correct part number, it is essential to know the shaft diameter and housing dimensions.

These bearings are used in industries such as metallurgy, food, textile and automotive, in equipment such as pumps, compressors, transmission boxes, machine tools and conveyor systems. In Argentina, they are common in the manufacturing industry and in heavy machinery maintenance, where robustness and radial load capacity are critical. Their compact design makes them ideal for confined spaces and for applications with oscillating or high-frequency rotary movements.

For correct selection, take into account the radial load to be supported, the rotation speed and the environmental conditions. Mounting requires precise alignment between the shaft and the housing to avoid additional stresses. Proper lubrication, whether grease or oil, extends service life and reduces wear. Sealing will depend on the contamination present; in dirty environments, it is recommended to protect the bearing with additional seals. Follow the manufacturer's instructions for mounting and axial fixing.

Regarding equivalents, NA49‥R series needle roller bearings can be interchanged with products from other brands that follow the same dimensional designation, such as SKF, FAG or NSK, provided that tolerances and internal design are verified. It is important to consult compatibility tables and ensure that critical dimensions match. MR Accesorios Industriales advises you to find the best option for your application.

If you need a quote for an NTN NA49‥R series needle roller bearing, write to us on WhatsApp with the part number or the dimensions you require. At MR Accesorios Industriales we will quote you promptly and indicate the compatible alternative if necessary. We have more than 80 years of experience in the field and we are in Buenos Aires, Argentina, to help you keep your equipment running.

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