Both ball bearings and roller bearings are one of the common types of rolling bearings. The ball balls of ball bearings are installed in the middle of the inner ring and the outer ring, and can withstand larger loads. Also called ball bearings. Roller bearings rely on the rolling contact between the main parts to support the rotating parts. Different roller bearings can withstand different radial and axial forces. So what are the basic differences in the use of these two bearings? China Bearing Network shares specific situations based on experience.
Ball bearings and roller bearings are the two basic types of rolling elements, which are different from the two basic types of rolling bearings: 1. Ball → ball bearing. 2. Roller → Roller bearing.
The difference between a ball and a roller lies in the way in which they contact the raceway.
The ball makes point contact with the raceway of the bearing ring (Figure 2). As the load acting on the bearing becomes larger and larger, the contact point becomes an elliptical area. The small contact area can reduce the rolling friction, so that the ball bearing can adapt to high speed while limiting its load-carrying capacity.
The roller makes line contact with the raceway of the bearing ring (Figure 3). As the load on the bearing becomes larger and larger, the contact line becomes a kind of rectangle. As the contact area becomes larger and the resulting friction becomes larger, compared with ball bearings of the same size, roller bearings can withstand heavier loads, but at lower speeds.
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