Whether you are buying a ball bearing for a high-speed application or a smaller one for an anti-lock braking system, it is important to know the differences between the different types. In addition to determining the type of bearing, you also need to consider its size, the material it is made of, and the environment in which it will be used. It is also useful to consult official references to ensure that you get the right ball bearing for your needs.

The most common materials used to make a ball bearing are steel and stainless steel. These two materials provide excellent resistance to corrosion and wear. They are also resistant to chemical compounds and magneticity. For applications where rusting is a problem, 440C stainless steel is often used. Plastic balls are another popular choice. They weigh less than steel balls and are able to resist corrosion. They are also less expensive.

Deep groove ball bearings are a standard type of ball bearing. These bearings are ideal for supporting heavy axial and radial loads. They are available in a variety of configurations, including snap-ring, seal, and shield styles. These types of bearings are commonly used in machinery, engines, and other devices that require radial support.

The outer race of a ball bearing is a thin steel ring. It is held in place by a cage that holds the balls in place. This is usually made of steel, but some bearings now use molded plastic cages. This reduces friction and makes for a cheaper ball bearing.

The ball that is contained in a ball bearing is the rolling part. The ball is rolled between an inner and outer ring. The race provides a groove-baed pathway for the balls to travel. The balls are distributed evenly around the races. This design allows for rotation without much friction.

A self-aligning ball bearing is a clever way to distribute radial load across rows of balls. It aligns the balls with the groove in the center of the outer race. These bearings are particularly useful in challenging installation situations.

The most efficient and effective way to lubricate a ball bearing is by using a proper lubricant. The balls are usually sealed in order to prevent contamination and grease from getting into the bearing. This is especially important in the automotive industry, where contamination is a concern. However, they are also suitable for other applications, such as cooling fans. In addition, some manufacturers have developed plastic-cage ball bearings that are cheaper to manufacture.

Other applications include cooling fans, idle control motors, and throttle assemblies. These bearings are also found in aerospace applications.