RNA RNA69 Series Double Row Needle Roller Bearing RNA6909 Size 52x68x40 SFT

Needle roller bearings with cylindrical roller bearings,relative to its diameter, roller is fine and long. This is called needle roller. Although it has a small section, the load bearing capacity of bearing still had high, with thin and long needle bearing roller, so the radial structure is compact, compered with the other bearings,the size of the inner diameter and load capacity is the same.and its has the minimum size of outside diameter, especially for supporting structure of radial installation size restricted.

Needle roller bearings are bearings with cylindrical rollers that are small in diameter relative to their length. The modified roller/raceway profile prevents stress peaks to extend bearing service life.

needle roller bearings in many different designs, series and in a wide range of sizes, which make them appropriate for a wide variety of operating conditions and applications.

1. Needle roller and cage assembly

2. Drawn cup needle roller bearings

3. Needle roller bearings with machine rings

4. Alignment needle roller bearings

5. Universal joint bearings

6. Combined needle roller bearings

7. Needle roller thrust bearings

8. Cam follower, track rollers

NA series needle roller bearing size chart:

have many designs and sizes to match their widely uses: NA series / K series / RNA series / RNAOL series / NUTR series / RNAO series / NAOL series / NAL series / NAVP series / KBK series / STO series / F series / HK series / KNL series.