
SKF Hybrid Ceramic Bearing 26X12X8 for Bicycle
Si3N4 Ceramics is a new type of non-metallic ceramic material. It is characterized by high strength at room temperature and high temperature, and the strength of Si3N4 can be maintained at 1200 ℃.
Maintaining a leading position in zircar ceramics alumina boats, country hearth wood stove 2000 ceramic fiber board, ceramic heaters and heating pads for reptiles technology, quality and after-sales service is the foundation of our development. We strive to build a scientific and reasonable talent training mechanism and are committed to creating a solid and broad career stage for the career development of our employees. With the excellent product quality, favorable product prices and considerate after-sales service, we have won unanimous praise from customers. We pay close attention to and grasp the needs of users, and constantly innovate products and services. We continue to develop steadily and provide considerable returns for the society and employees.
Product Description
Si3N4 Ceramics is a new type of non-metallic ceramic material. One of the popular product of Si3N4 ceramics is Si3N4 tube. The tubes are mainly used in conjunction with thermocouples to protect them. It allows the thermocouple to operate properly in special environments and to resist high pressures and high flow rates.
Process Method
It uses silicon powder as raw material and is first made into the desired shape using the usual molding method. Initial nitriding is done in nitrogen at 1200°C, so that part of the silicon powder reacts with nitrogen to form silicon nitride. This way the whole body already has some strength. It is then nitrided a second time in a high-temperature furnace at 1350°C to 1450°C to react with the silicon nitride.
Specifications
Thermocouple protection tube: diameter Φ12-80mm, length 600-1800m

Data Sheet
Items | Data |
Sintering method | gas pressure sinter |
Density | >3.2g/cm3 |
Si3N4 content | >92% |
Flexural strength | >750Mpa |
Compressive strength | >1500Mpa |
Thermal conductivity (W/mk) | >22 |
Porosity | 0 |
Thermal expansion coeff. (RT-1000℃) | 3.2 |
Max temperature in air | 1400℃ |
Hardness (HRA) | >92 |
Q&A
1. How long is the service time of Si3N4 ceramics?
It will be different as per your application. The general period is 25-30days.
2. What is the payment terms?
Our payment terms are T/T, L/C or as per your request.
We strive to be the preferred supply partner of our customers by providing high quality SKF Hybrid Ceramic Bearing 26X12X8 for Bicycle and value-added services to pursue the greatest customer satisfaction! We strictly do every detail to minimize production costs, so that customers can have cost-effective products. We have formed a strong and perfect marketing service network, and our products are exported to all over the world.
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