What is the basic structure of a deep groove ball bearing?

Deep groove ball bearings are one of the most common types of rolling bearings and are widely used in mechanical engineering for their simple and efficient structure. Its basic structure includes an inner ring, an outer ring, rolling elements, a cage, and a seal or dust cover. The inner ring and the outer ring are the two main components of a deep groove ball bearing. The inner ring is usually mounted on a rotating shaft, while the outer ring is fixed in the bearing seat. Both of these ring-shaped components have a deep groove in which the steel balls (rolling elements) roll, thereby reducing friction and wear. The rolling contact between the inner ring and the outer ring enables deep groove ball bearings to operate at high speeds while maintaining low friction and low noise.

The rolling element, the steel ball, is one of the most important components in a deep groove ball bearing. The steel ball is located in the deep groove between the inner ring and the outer ring, and reduces friction by rolling, making the relative movement between the inner ring and the outer ring smoother. The material of the steel ball is usually high-hardness steel to ensure its durability and reliability under high-speed rotation and heavy load conditions.

The function of the cage is to evenly separate the rolling elements and prevent the steel balls from contacting and colliding with each other. The cage can be made of metal or non-metallic materials, such as brass, steel or engineering plastics, and the specific choice depends on the use environment and working conditions of the bearing. The cage not only plays the role of maintaining the spacing of the rolling elements, but also guides the steel balls to roll in the correct position, further reducing friction and noise.