NTN RNA495T2 needle roller bearing
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Needle roller bearing
- Series
- RNA49
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Description
NTN RNA495T2 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 RNA495T2 and any equivalents.
The NTN RNA49 series is a radial needle roller bearing that does without an inner ring. Because the shaft itself serves as the raceway, the bearing takes up very little radial room and still handles substantial radial loads. This makes it a practical choice for equipment where the housing diameter is restricted but the load demands are not.
Reading the part number helps you order the right item. RNA tells you there is no inner ring, the outer ring is machined and a steel cage holds the needles. The digits that follow, as in RNA495T2, define the size and the dimension series. A suffix such as T2 points to a particular design variant in the family. With that structure in mind, you can identify the bearing and pass along the exact number you need.
These bearings show up in automotive, metallurgical, food processing and machine tool settings. Gearboxes, water pumps, air compressors and material handling equipment commonly use them. When shaft diameter is limited and the assembly must stay rigid and precise, the RNA49 design fits the bill.
Selection depends on the shaft raceway. Its hardness and roughness must be suitable for direct rolling. Check that the shaft and housing align well, since these bearings do not tolerate misalignment. Lubrication, whether grease or oil, should match the speed and operating temperature. Sealing the assembly also matters to keep particles out.
Needle roller bearings without an inner ring from other makers can often be swapped in when the main dimensions and load conditions line up. Confirm the full part number and tolerances before committing. If you have a number from another brand or an unidentified part, our team can point you to a compatible option or quote the exact size.
To get a quote, send the part number RNA495T2 or the full RNA49 series designation by WhatsApp or email. We reply promptly with the details your application needs, and we can also advise on mounting and lubrication.
Dimensions
Dimensions and tolerances: Message us the part number on WhatsApp and we'll verify its dimensions and version with the manufacturer's datasheet.
Frequently asked questions
- What does RNA mean in a needle roller bearing?
- RNA means the bearing has no inner ring, so the needles run directly on the shaft. This cuts radial size and allows higher load capacity in tight spaces.
- How can I tell if the RNA49 bearing fits my machine?
- Check shaft and housing dimensions, radial load and lubrication conditions. If you have the original part number, send it to us and we will quote the exact size or a compatible alternative.
- What lubrication should I use for a needle roller bearing?
- It depends on speed and temperature. Oil suits high speeds; lithium grease works for general applications. Keep lubrication clean and renew it at the manufacturer's recommended interval.