What Are Ball Bearings?

Ball bearing is a type of rolling bearing. The spherical alloy steel ball is installed between the inner steel ring and the outer steel ring. The rolling method is used to reduce the friction in the power transmission process and improve the mechanical power transmission efficiency. Ball bearings cannot withstand heavy loads and are more common in light industrial machinery. Ball bearings are also called ball bearings.

[gn zh zhóu chéng]

[Pronunciation] gun zhu zhou cheng [source] mechanical dynamics

[Examples] Common equipment using ball bearings are: electric motor drive shafts, light (civilian) motor vehicle transmission parts, machining equipment, factory production line mechanical transmission assemblies, etc.

Ball bearings include four basic components: ball, inner ring, outer ring and cage or retainer , as shown in the figure. General industrial ball bearings meet

The hardness of the cage is lower than that of balls and rings, and its material is metal (such as: medium carbon steel, aluminum alloy) or non-metal (such as: Teflon, PTEF, polymer materials). Rolling bearings have less rotational frictional resistance than journal bearings, so at the same speed, the temperature due to friction will be lower.

Ball bearings are generally used in low-load mechanical transmission equipment. Because the bearing area of the ball bearing is small, serious mechanical damage is easy to occur under high-speed operation. Therefore, in heavy-duty mechanical transmission, needle roller bearings are often used to increase the bearing surface, improve mechanical transmission efficiency, and reduce Mechanical damage.

Ball bearings have changed the friction mode of the bearings and adopted rolling friction. This method more effectively reduces the friction between the bearing surfaces, improves the service life of the fan bearings, and therefore extends the service life of the radiator. The disadvantage is that the process is more complicated, the cost is increased, and it also brings higher working noise.