Hunan Wa Fangdian Bearing Manufacturing Co., Ltd. provides a series of hybrid ceramic bearing products that combine the advantages of bearing steel and ceramic materials. This type of bearing combines the best characteristics of both materials, with the strength and toughness of bearing steel and the advantages of low density, high hardness, high temperature and corrosion resistance of ceramic materials.
Bearing steel mixed ceramic characteristics
High strength and toughness: Bearing steel provides the necessary structural strength and toughness to ensure the stable operation of bearings under complex working conditions.
Low density: Ceramic rolling elements reduce overall weight, helping to reduce moment of inertia and improve starting efficiency.
High hardness and wear resistance: Ceramic rolling element has extremely high hardness and excellent wear resistance, which significantly extends the service life of the bearing.
High temperature and corrosion resistance: Ceramic materials can work stably in high temperature and corrosive environments, improving the application range of bearings.
Low friction and self-lubrication: The low friction coefficient of the ceramic rolling element reduces energy loss and maintains good performance even in the absence of lubricants.
Relevant data at home and abroad
International standard: ISO 15811 specifies the application standards of ceramic materials in rolling bearings, including material performance requirements, test methods, etc.
Domestic standard: GB/T 34255-2017 "Rolling bearing part ceramic materials" specifies the requirements for the use of some ceramic materials in rolling bearings.
Performance data
Zirconia (ZrO2) rolling element
Density: about 6.0g /cm³
Hardness: About 1200 HV
Fracture toughness: about 3-10 MPa·m^(1/2)
Thermal conductivity: about 2.0W /m·K
Coefficient of thermal expansion: about 10 x 10^(-6)/°C
Temperature range: -200°C to 1200°C
Corrosion resistance: Good resistance to most acids and bases
Silicon nitride (Si3N4) rolling element
Density: About 3.2 g/cm³
Hardness: Approx. 1800 HV
Fracture toughness: about 5-8 MPa·m^(1/2)
Thermal conductivity: about 25 W/m·K
Coefficient of thermal expansion: approximately 2.8 x 10^(-6)/°C
Temperature range: -200°C to 1400°C
Corrosion resistance: Good resistance to most chemicals
Bearing steel
Density: about 7.85 g/cm³
Hardness: depends on the specific steel grade and heat treatment state
Fracture toughness: high
Thermal conductivity: about 50 W/m·K
Coefficient of thermal expansion: approximately 11 x 10^(-6)/°C
Temperature range: depends on the specific steel grade
Corrosion resistance: depends on steel grade and surface treatment
Application field
Aerospace: Precision bearings used in aircraft engines and avionics.
Automotive industry: hub bearings and transmission bearings for high-performance vehicles.
Medical equipment: Bearings for medical instruments that require high accuracy and reliability.
Industrial machinery: Bearings for high-speed operation and heavy loads of industrial machinery and equipment.
Customized service
Hunan Wa Fangdian Bearing Manufacturing Co., Ltd. can provide customized services according to the specific needs of customers, including but not limited to size, shape, surface treatment and other aspects.
If you have any special requests or need further information, please feel free to contact us. Contact Tel: 15580979999
The above data is for reference only, the actual performance may vary depending on the processing process and the specific material formulation. If you need more detailed technical parameters or customized solutions, please contact us directly for more information.
