A ball bearing is a type of rolling bearing in which balls are used to maintain the distance between the bearing rings. The function of a ball bearing is to reduce friction during rotation and to absorb radial and axial loads. This is accomplished by using at least two races in which the balls are placed and the load is transferred through the balls. In many functions, one of the races is stationary while the others are connect to a rotating assembly, such as a hub or perhaps a shaft. When a group of bearing rings rotates, the balls rotate as well. As they rotate, the balls have a much lower coefficient of friction than if two smooth surfaces were sliding against each other.
Ball bearings generally have a lower load-carrying capacity for their size than other types of rolling bearings because the contact area between the balls and the raceways is smaller. On the other hand, they can tolerate a small amount of displacement of the inner and outer rings.
Are you familiar with deep groove ball bearings? If not, this article will help you broaden your horizons. You can get an overview of this bearing here. Generally speaking, a deep groove ball bearing often consists of a pair of snap rings, a group of cages, and a group of rigid balls. It has a type 6 code and is a very common bearing. Because of its simple design and ease of use, this bearing is often use in a variety of equipment.
The deep groove ball bearing mainly absorbs purely radial loads. It carries both radial and axial loads at the same time. When it carries only a purely radial load, the contact angle is zero. If the bearing has a larger radial clearance, it becomes a contact-angle bearing and carries a larger axial load. Compared to other bearings of the same size. This bearing has a very small coefficient of friction and a high limiting speed. Especially in a working situation with a very high axial load, it has more advantages than a thrust ball bearing. Once the bearing is mounted on the axle, the axle misalignment can be controlled within the axial clearance range.
Because this bearing has a simple structure and can easily achieve high manufacturing accuracy. It is very convenient to manufacture on a large scale. According to the structure, there are various deep groove ball bearings. Such as deep groove ball bearing with dust cap, deep groove ball bearing with rubber sealing ring, and deep groove ball bearing with latch. Although they have some differences, they all have the following characteristics.
First, from a design point of view, each sleeve has a continuous groove raceway. With a cross-section of about one-third the circumference of the ball. This raceway is task with absorbing radial load and axial load. Second, as the radial clearance increases, the bearing can take axial load, which varies in two different directions. Third, the friction is very low, but the rotational speed is quite high. In the last place, a perforated shaft holder is often use. However, for bearings with an inside diameter of more than 200 mm or with high rotational speeds, it is better to use a car-built cage.
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