products

What is a ball bearing? Generally speaking ball bearings are made up of inner ring, outer ring, ball and cage, for the inner ring acts to engage the shaft and rotate with the shaft. The outer ring of the ball bearing is matched with the bearing seat to play a supporting role. The frictional resistance is small, the power consumption is small, and the mechanical efficiency is high. These are the characteristics of the ball bearing, and the size for ball bearing is also very standardized, interchangeable, and easy to install and disassemble. For advantage of stable quality, high precision, high speed, little wear and long service life, so the ball bearings are also widely used in various machinery. Lily bearings is the leader of the bearing suppliers.

Ball bearings are also used in a wide range of applications, not only to withstand radial loads but also with two-way axial loads. It is very suitable for many high speed and low noise, low vibration requirements. When the ball bearing is subjected to a pure radial load, the contact angle is zero. When the ball bearing has a large radial clearance, it has the performance of angular contact, generally the friction coefficient is relatively small, and the extreme speed of the bearing is also high, especially in the case of a large high-speed operation, the ball bearing is even more excellent.

For the extreme speed operation, the ball bearings are extremely durable and needn’t frequent maintenance. The bearing has a simple structure, very high extreme rotation speed, and many changes in the size and form of the ball bearing, so it has a wide range of applications in the general machinery industry such as precision instruments, low noise motors, and automobiles.

Ball bearings consist of four main components: inner ring, outer ring, balls, and cage.

Think of ball bearings as small wheels that work inside the machine. When pulling a cart, you would want to pull the cart with wheels on the ground, and would never drag the cart without any wheel. That’s the basic principle behind any ball bearing.

In a typical ball bearing setup, the inner ring fits on a shaft where the rotation happens. The outer ring fits tightly inside the outer structure (such as a motor casing) which must be stationary.

The balls are parts that fill the gap between the inner and outer rings. The balls provide “point contact” that allows relative motion between the outer and inner rings.

The cage is normally a metal or ceramic structure that holds all the balls fixed at that relative positions but allows them to freely rotate.

When the shaft rotates, the balls start spinning inside the cage along with the rotating inner ring. A relative movement between the inner and outer rings is established with minimal contact area.

In many industrial equipment, relative movement has to happen between different components. The relative movement involves contact between two components which creates friction.

Having friction between components when they are moving in high speed is never ideal. A solution to reduce the friction as much as possible must be applied. The solution is to reduce the contact area between the two moving components through the use of ball bearings.

Ball bearings enable “point contact” between the inner and outer rings when they are moving at high speed. Because the contact becomes minimal after using ball bearings, the friction is much lower.

Ball bearings are widely used in industries such as automotive, aerospace, paper making, toy making, and home appliances.