Ceramic Bearing for the defense industry in the harsh environment of the adjustment, heavy load, low temperature, no lubrication conditions and development, is the new material, technology, new structure of the perfect combination.
Turning it into civil technology, Ceramic Bearing can completely cover all the applications of precision, medium and high speed all steel bearings. The diameter and diameter of ceramic bearings are the standard sizes of P4, P5 and P6 of steel bearings in the country. Due to the low thermal expansion coefficient of ceramic materials, small heat transfer performance and small elasticity measurement, the installation coordination needs attention.
The performance of ceramic bearings is far better than all steel bearings, life can be more than the current use of bearing life 3 times times more than, can save a lot of downtime, reduce scrap rate, reduce inventory bearing spare parts.
Compared with the bearing steel performance, the weight is 30%-40% of the bearing steel, which can reduce the increase and skidding of the dynamic force caused by centrifugal forces. Because of high wear resistance, rotational speed is 1.3-1.5 times times of bearing steel, can reduce the high speed of the channel surface damage caused by rotation. The modulus of elasticity is 1.5 times times higher than that of bearing steel. The elasticity of the force is small, which can reduce the deformation caused by the high load. Hardness is 1 time times the bearing steel and can reduce wear. Compression is 5-7 times the bearing steel. The thermal expansion coefficient is less than 20% of the bearing steel. Friction coefficient is less than 30% of bearing steel, can reduce the heat caused by friction, can reduce the premature spalling due to high temperature failure. Tensile, flexural and metal are equal. Imported bearings
Ceramic bearings with high temperature, cold, wear-resistant, corrosion resistance, magnetic insulation, oil-free self-lubricating, high speed and other characteristics. Can be used in extreme harsh environment and special conditions, can be widely used in aviation, aerospace, navigation, petroleum, chemical, automotive, electronic equipment, metallurgy, electric power, textile, pumps, medical equipment, scientific research and defense military and other fields, is the application of new materials High-tech products.
Ceramic bearing rings and rolling body using all ceramic materials, there are zirconia (ZrO2), silicon nitride ($literal), silicon carbide (sic) three kinds. The cage is made of PTFE, nylon 66, polyether imide, zirconia, silicon nitride, stainless steel or special aviation aluminum to enlarge the application surface of ceramic bearings.
When it comes to ceramics, the first thing we think about is the tableware used in the home, with the development of science and technology, the physical properties are applied to all walks of life including bearing industry. Below to introduce the advantages of ceramic bearings!
First, because ceramics are almost not afraid of corrosion, ceramic rolling bearings are suitable for operation under harsh conditions that are covered with corrosive media.
Second, because the density of ceramic rolling balls is lower than steel, the weight is much lighter, so the centrifugal effect of the outer ring can be reduced by 40%, and the service life is greatly prolonged.
Third, ceramic is affected by the expansion of the expansion of the smaller than steel, so in the bearing gap is certain, the bearing can be allowed to change in the temperature of the more intense environment work.
Finally, because the elastic modulus of ceramics is higher than that of steel, it is not easy to deform when it is subjected to force.
To sum up, because the ceramic bearings in the application has so many advantages, so the major import bearings manufacturers such as: SKF bearings, NSK bearings, the company is related to the production of the product.
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