NSK NA4900TT needle roller bearing

NSK NA4900TT is a reference of needle roller bearing, within Bearings. Request a quote for NA4900TT via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The NSK needle roller bearing is a cylindrical roller bearing of reduced diameter, designed to withstand radial loads in very limited radial spaces. It is used in applications where the shaft and housing do not allow mounting a conventional ball bearing, such as transmissions, pumps, compressors and agricultural machinery. Its construction with a steel cage and guided needles allows high speeds and a high load capacity in relation to its size. MR Accesorios Industriales sells this series in Buenos Aires, Argentina.

The series designation is read as follows: the letters NA indicate that it is a needle roller bearing with a machined inner ring, unlike the series without an inner ring. The numbers that follow indicate the shaft diameter or the bore diameter depending on the series: for example, in NA49/28TT the 28 corresponds to the 28 mm bore diameter, while in NA4900TT the code 00 indicates a standard size of the 49 series. The TT suffix indicates that the bearing incorporates contact seals on both sides, which retains the lubricant and protects against contamination. Other examples are NA69/22TT, NA69/28TT and NA69/32TT, where the 69 series defines the width and the load capacity.

These bearings are used in industries in Argentina such as automotive, agricultural, metallurgical and food. They are found in transmission cases, hydraulic pumps, compressors, electric motors, machine tools and material handling equipment. Their ability to withstand high radial loads in reduced spaces makes them ideal for small-diameter shafts rotating at moderate or high speeds. They are also used in printing machine rollers and in linear guide systems.

To correctly select an NA needle roller bearing, take into account the shaft diameter, the radial load and the environmental conditions. The TT sealing is suitable for environments with dust or moisture, since it prevents the entry of contaminants and the loss of lubricant. If the bearing works at high speeds, verify that the lubrication is adequate and that the internal clearance allows thermal expansion. During mounting, ensure alignment between the shaft and the housing, and avoid blows that could damage the needles or the seals. Lubrication can be with grease or oil, depending on the type of application.

Regarding equivalents and interchangeability, NSK needle roller bearings can be replaced by products from other brands that follow the same dimensional designation, such as SKF, FAG, NTN or INA, as long as the dimensions and the sealing type match. It is important to verify the bore diameter, the outer diameter and the width, as well as the load capacity and the limiting speed. If you have doubts, consult us with the original code and we will indicate the compatible alternative.

To request a quote for the NSK needle roller bearing you need, send us the complete code via WhatsApp to MR Accesorios Industriales. We work with the series in its different variants and we will reply promptly. If you cannot find the exact size, write to us with the code or the model and we will quote it.