Turned Needle Roller Bearings

Needle Roller Bearings

1. The inner and outer wheels are made of high-carbon bearing steel pipes, which are turned, heat-treated, and finely ground and then sorted and assembled. The track surface is both hard (HRC60-64) and smooth (surface luminosity below 0.6s).
2. The outer wheel is equipped with oil grooves and oil holes for easy lubrication.
3. The needle rollers are made of high-carbon chromium bearing steel wire, which is hard and wear-resistant, the diameter difference is within 1μ, and the load falls on each needle roller equally.
4. There are moderately inclined surfaces at both ends of the needle roller to reduce the stress generated when the load is running, so that the track will not be subjected to local pressure, and it is not easy to peel off. 5. The guide area and the holding area of the retainer are designed separately, which can prevent the needle roller from falling off before it is installed. After installation, the contact between the timer and the needle roller is limited to the two ends and the guide area, so the friction is minimal and can be Improve the running rate of needle rollers and reduce power loss.