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NTN needle roller bearing · NTN RNA495T2
Needle roller bearing NTN RNA495T2

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Needle roller bearing NTN RNA495T2

Manufacturer Part Number
RNA495T2
Brand
NTNOfficial distributor
Category
Bearings
Subcategory
Needle roller bearing
Series
RNA49

NTN

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Description

NTN RNA495T2 is a needle roller bearing reference, within Bearings. Request a quote for RNA495T2 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The NTN RNA49 series needle roller bearing is a radial bearing without an inner ring, designed to withstand high radial loads in very tight radial spaces. It is used in applications where the shaft acts directly as the raceway, which allows for a more compact and lighter design. It is a common solution in transmissions, pumps, compressors and industrial machinery that requires high load capacity within a limited outside diameter.

The RNA49 series designation is interpreted as follows: the letters RNA indicate a needle roller bearing without an inner ring, with a steel cage and a machined outer ring. The number that follows, as in RNA495T2, indicates the size and the dimension series. The suffix T2 identifies a specific design variant within the family. Knowing this nomenclature allows you to quickly identify the product and request the exact part number you need.

These bearings are used in industries such as automotive, metallurgical, food processing and machine tool. In Argentina, they are common in gearboxes, water pumps, air compressors and material handling equipment. Their ability to withstand radial loads in confined spaces makes them ideal for applications where the shaft diameter is limited and rigidity and precision are required.

To correctly select an RNA49 needle roller bearing, take into account the hardness and roughness of the shaft raceway, which must meet the requirements for direct rolling. Check the alignment between the shaft and the housing, since these bearings are sensitive to misalignment. Proper lubrication, with grease or oil depending on the speed and working temperature, extends service life. Sealing of the assembly is also key to prevent particle contamination.

Regarding equivalents, needle roller bearings without an inner ring from different brands can be interchanged if the main dimensions and load conditions match. Always verify the complete part number and tolerances. If you have another brand's part number or an unidentified part, at MR Accesorios Industriales we can tell you the compatible alternative or quote the exact size you need.

To move forward with the quote, send us the part number RNA495T2 or the complete RNA49 series designation via WhatsApp. At MR Accesorios Industriales we will reply promptly with the information you need for your application. We can also advise you on the proper mounting and lubrication for your equipment.

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

Dimensions

Dimensions and tolerances: Send us the part number via WhatsApp and we'll confirm dimensions, sealing, and internal clearance against the manufacturer's data sheet.

Frequently Asked Questions

What does the abbreviation RNA mean in a needle roller bearing?
RNA indicates that the bearing has no inner ring; the needles roll directly on the shaft. This reduces the radial size and allows greater load capacity in tight spaces.
How do I know if the RNA49 bearing is compatible with my machine?
Check the shaft and housing dimensions, the radial load and the lubrication conditions. If you have the original part number, send it to us and we will quote the exact size or the compatible alternative.
What lubrication do you recommend for a needle roller bearing?
It depends on the speed and temperature. For high speeds, oil is used; for general applications, lithium grease. It is essential to keep the lubrication clean and renew it according to the interval recommended by the manufacturer.
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