Basic difference between ball bearing and roller bearing

Ball bearings and roller bearings are one of the common types of rolling bearings. Ball bearings of ball bearings are placed between the inner and outer steel rings and can withstand large loads. Also called ball bearings. Roller bearings rely on rolling contact between the main parts to support the rotating parts. Different roller bearings can withstand different radial and axial forces. What are the basic differences between the two bearings in use? China Bearing Network shares the specific situation based on experience.

Ball bearings and roller bearings are two basic types of rolling elements that are different from rolling bearings: 1, ball → ball bearings. 2. Roller → Roller bearing.

The difference between a ball and a roller is the way it is in contact with the raceway.

The ball makes point contact with the raceway of the bearing ring (Fig. 2). As the load acting on the bearing becomes larger, the contact point becomes an elliptical region. The small contact area makes the rolling friction smaller, so that the ball bearing can limit its load carrying capacity while adapting to high speed.



The roller is in line contact with the raceway of the bearing ring (Fig. 3). As the load acting on the bearing becomes larger, the contact line becomes a rectangle. As the contact area becomes larger and the resulting friction becomes larger, the roller bearing can withstand heavier loads than the ball bearings of the same size, but at a lower speed.