What are the advantages of ceramic bearings?

Ceramic bearings have the characteristics of high temperature resistance, cold resistance, wear resistance, corrosion resistance, anti-magnetic and electrical insulation, oil-free self-lubrication and high speed. It can be used in extremely harsh environments and special working conditions, and can be widely used in aerospace, aviation, navigation, petroleum, chemical, automotive, electronic equipment, metallurgy, electricity, textiles, pumps, medical equipment, scientific research and defense, and military fields. High-tech products for new material applications. For more information about ceramic bearings, please read the following words.

What role do ceramic bearings play?

Why do people choose ceramic bearings?

How many properties do ceramic bearings have?

What role do ceramic bearings play?

First, because ceramics are almost not afraid of corrosion, ceramic bearings are suitable for operation in harsh conditions full of corrosive media.

Secondly, because the density of the ceramic roller ball is lower than that of steel, and the weight is much lower, the centrifugal effect of the outer ring can be reduced by 40% during rotation, which greatly extends the service life.

Thirdly, ceramics are less affected by thermal expansion and contraction than steel, so that the bearing can operate with constant bearing clearance in an environment where the temperature difference changes more drastically.

Fourthly, since the modulus of elasticity of the ceramic bearing is higher than that of steel, it does not deform easily when exposed to force, so it is advantageous to improve the working speed and achieve higher precision.

Why do people choose ceramic bearings?

The fields of application of ceramic bearings are becoming more and more extensive, but ceramic ball bearings are successfully used in the industrial sector. Silicon nitride ceramic ball bearings are the most widely used. The advantages of ceramic bearings are: high limit speed, good maintenance of accuracy, small starting torque, high rigidity, good dry running performance, long service life, very suitable for high speeds, high temperatures and corrosion, radiation conditions to maintain high precision and long time. Run.

How many properties do ceramic bearings have?

1. Low density: Due to the low density of the ceramic rolling element material and the low centrifugal load, it can work at a higher speed and generate less heat.

2. Moderate modulus of elasticity: The modulus of elasticity of ceramic rolling elements is higher than that of steel rolling elements, and the dynamic stiffness of the bearing is improved, but if the modulus of elasticity is too large, the bearing capacity is reduced due to stress concentration.

3. Small coefficient of thermal expansion: A small coefficient of thermal expansion helps to reduce the sensitivity to temperature changes, thereby preventing sticking. For hybrid roller bearings, the applicable operating speed range is wider.

4. High compressive strength: Rolling bearings require high compressive strength to withstand high contact loads (for ceramic materials, strength is usually determined by the fracture modulus measured by three-point or four-point bending tests).

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