
Non-Standard Hybrid Si3n4 Ceramic Insert Ball Bearing Sb208 50/80
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 ℃.
On the basis of market segmentation, we concentrate our advantages and strengths to stabilize the existing market and expand the market share of our high value-added 2 inch ceramic fiber blanket, Ceramic Pad Heater, thin alumina ceramic plates. Our company provides customers with professional, detailed and complete overall solutions, and strictly inspects quality control and logistics services. We actively explore the high-end market at home and abroad, adhere to independent innovation, and constantly improve the core competitive ability. Relying on the team spirit of unity, self-improvement and perfect sales service, we have successfully entered the industry with fierce competition. Our core values are to take social responsibility and share the fruits of development.
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.
At present, our company has established cooperative partnerships with many top R&D units at home and abroad, established a brand image of integrity, professionalism, responsibility, and quality, and made its own contribution to the promotion of the development of the Non-Standard Hybrid Si3n4 Ceramic Insert Ball Bearing Sb208 50/80 field. Our company has established a leading comprehensive competitive advantage in consulting resources, professional technology, product innovation, market development, brand image, etc. We believe that the real talents are not trained by the company, but by the self-trained ones, and the company is the selector.
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