The theoretical advantages of ceramic bearings include low bearing resistance, light weight, and long life. However, ceramic bearings are so expensive, are they really better than metal bearings? Next, let's take a look at the "comparison of the advantages and disadvantages of ceramic bearings and metal bearings".

Advantages and disadvantages of ceramic bearings
Advantages
1. Corrosion resistance. In a generally corrosive working environment, ceramic bearings can still be used without obstacles. Can withstand highly corrosive working environments.
2. Can withstand temperature changes. Whether the temperature suddenly rises or drops suddenly, the impact on ceramic bearings is relatively small.
3. Not easy to deform. Generally, ceramic bearings will not deform due to force because the elastic modulus of ceramic bearings is higher than that of steel.
4. Long service life. The density of ceramic rolling balls is lower than that of steel, and the weight is naturally light, so the friction caused by the centrifugal force of the outer ring can be reduced, and the service life of ceramic bearings will naturally become longer.
Disadvantages
1. Difficult processing and high cost.
2. Not impact-resistant and high hardness.
3. It cannot "expand and contract" with the equipment. The temperature has basically no effect on ceramic bearings, which is both an advantage and a disadvantage.

Advantages and disadvantages of metal bearings over ceramic bearings
Advantages
1. The processing is simpler than ceramic bearings, so the cost is also lower than that of ceramic bearings.
2. It is more appropriate to use metal bearings in some equipment.
3. Ceramic bearings are not required in most equipment, and metal bearings are sufficient.
Disadvantages
1. The life is shorter than that of ceramic bearings. In terms of service life, ceramic bearings are much higher than metal bearings.
2. It consumes more lubricants than ceramic bearings. When the lubricating oil becomes thinner, the lubrication ability of ceramic bearings is still not lower than the traditional lubricants commonly used in steel bearings.
3. Low rigidity. Ceramic bearings are more rigid than metal bearings, and the elastic modulus of ceramic materials is high. Its rigidity is 15-20% greater than that of ordinary steel bearings.
4. Compared with metal bearings, ceramic bearings are more corrosion-resistant. Because of the difference in their own materials, the corrosion resistance and wear resistance of ceramic bearings are directly better than those of metal bearings.

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