
Si3n4 Full Ceramic Bearing 608 Size 8X22X7mm
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 ℃.
Since the establishment of the company, we have accumulated a wealth of professional manufacturing technology and valuable experience through long-term research and exploration of ceramic fiber cloth sale, soldering iron ceramic heating element, lg dryer heating element. We have a complete after-sales service team to provide you with one-stop service to solve your worries. We will take service as a guide and technology as support. We seek high potential talent and focus on our own continuous development while encouraging our employees to express themselves, practice, innovate and improve, and work with us to create a better future. We always adhere to the attitude of striving for perfection and complete various products with enthusiasm. We see development as a mutually beneficial partnership between the company, its employees and managers that enhances the level of employee engagement, contribution and satisfaction.
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.
With advanced consciousness, brand-new concepts and innovative spirits, we integrate advanced technologies at home and abroad to continuously research and develop new Si3n4 Full Ceramic Bearing 608 Size 8X22X7mm for the industry. We continue to promote a new corporate culture and develop a sense of personal responsibility. Our company always adhere to the 'quality-oriented, customer-oriented' business service policy, over the years to serve customers at home and abroad, has a high reputation in the industry.
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