Bearing is a device that used to reduce the friction between the two moving surface. Bearing are designed according to handle the various types of loads and weights. Commonly ranges of bearings are designed to handle the radial loads and thrust loads. Radial load means, the force is applied perpendicular to the axis of bearing. Thrust load means, the force is applied parallel to bearing's axis. Bearings are classified according to their structure and load carrying capable, etc. They are ball bearing, cylindrical roller bearing, thrust roller bearing, needle bearing, deep groove ball bearing, tapered roller bearing, etc. As well as bearing can be customized as per application. Even though there are various types of bearings are available, two types of bearings are widely used in machine industry. They are ball bearing and roller bearing.
Ball bearing contains the spherical ball arrays between the inner and outer rings. Spherical balls are arranged in a cage. Cage is placed between the two finely finished steel rings. These rings are called bearing raceways. Ball bearings are support both radial and thrust loads. As the ball structure is spherical, the contact area between the races and balls are very small. There is a chance the bearing get ruin of heavy loads, because balls have the contact with their bearing raceways in a single point. So ball bearing can apply only for small load application.
Generally speaking, roller bearings are designed to handle the heavy loads. In roller bearing roller is used instead of balls. The primary roller is cylinder. As rollers are in cylindrical shape, the contact between the rollers and the bearing races are straight line. As the contact area is larger than ball bearings, it can bear heavy loads compare with ball bearings. It can effectively handle the heavy radial loads, but it is not prefer for thrust loads. There are ranges of ball bearings are available like cylindrical, needle, spherical, etc. Each type is applied for different purpose.
Ball bearings are greatly reduces the friction but it is not suitable for heavy load application. Roller bearings can handle the heavy loads as efficiently but it not appropriate for thrust loads. Ball bearing plays the important role in some kinds of application. At the same time lack of roller bearing, some application is impossible. So, both are act as indispensable one in different applications. But the truth is both are the major using bearings in machine industry.
Ball bearing contains the spherical ball arrays between the inner and outer rings. Spherical balls are arranged in a cage. Cage is placed between the two finely finished steel rings. These rings are called bearing raceways. Ball bearings are support both radial and thrust loads. As the ball structure is spherical, the contact area between the races and balls are very small. There is a chance the bearing get ruin of heavy loads, because balls have the contact with their bearing raceways in a single point. So ball bearing can apply only for small load application.
Generally speaking, roller bearings are designed to handle the heavy loads. In roller bearing roller is used instead of balls. The primary roller is cylinder. As rollers are in cylindrical shape, the contact between the rollers and the bearing races are straight line. As the contact area is larger than ball bearings, it can bear heavy loads compare with ball bearings. It can effectively handle the heavy radial loads, but it is not prefer for thrust loads. There are ranges of ball bearings are available like cylindrical, needle, spherical, etc. Each type is applied for different purpose.
Ball bearings are greatly reduces the friction but it is not suitable for heavy load application. Roller bearings can handle the heavy loads as efficiently but it not appropriate for thrust loads. Ball bearing plays the important role in some kinds of application. At the same time lack of roller bearing, some application is impossible. So, both are act as indispensable one in different applications. But the truth is both are the major using bearings in machine industry.
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