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| Categories | Machining Ceramic Parts |
|---|---|
| Brand Name: | China |
| Model Number: | 008 |
| Place of Origin: | Suzhou,China |
| MOQ: | 100pcs |
| Price: | Negotiable |
| Payment Terms: | T/T |
| Supply Ability: | 10000 Piece/Pieces per Month |
| Delivery Time: | 25 days |
| Packaging Details: | Box, Carton, Wooden, Bag etc. Customized package |
| Product name: | High Quality Silicon Nitride Ceramic Balls For Bearing |
| Material: | Silicon Nitride |
| Application: | Industrial Ceramic |
| Fracture toughness: | 5.0-7.0 |
| Water Absorption: | 0% |
| Electrical Insulation: | excellent |
| Density: | 3.2g/cm3 |
High Quality Silicon Nitride Ceramic Balls For Bearing
Description:
Silicon Nitride Ceramic Balls (Si3N4) ceramic high strength, good wear resistance, high stiffness, corrosion resistance, high temperature, suitable for high temperature structural materials. Comparing the three types of ceramic materials, Si3N4 integrated superior performance, has become the material of choice for ceramic bearings.
Technical Parameters:
| Mechanical behavior | Unit | Al2O3 | SiC | Si3N4 | ZrO2 |
| Colour | ------- | Light yellow | black | black | white,black |
| Density | g/cm3 | 3.95 | 3.15 | 3.2 | 6 |
| Bending strength | MPa | 300~400 | 400~500 | 800~1200 | 950~1200 |
| Elastic modulus E | GPa | 380 | 350 | 300-320 | 210 |
| Poisson's ratio | 0.22 | 0.14 | 0.26 | -------- | |
| Hardness | Hv | 1800 | 2000~2500 | 1400~1700 | 1100~1300 |
| HRC | 80 | 85~90 | 75~80 | 70~75 | |
| Fracture toughness | MPa·m1/2 | 3.0~4.0 | 3.0~4.0 | 5.0~7.0 | 8.0~10.0 |
| Maximum use temperature | ℃ | 1000 | 1300 | 400 | 400 |
| Thermal expansion coefficient | 10-6/℃ | 8.4 | 4 | 3.3 | 10.3 |
Advantages:
1. Low density: 3.2 g/cm3 with lightweight than most of other
technical ceramics
2. Superior hardness, it's one of most hardest technical ceramic
than others
3. Great wear resistance due to its exceptional hardness and
self-lubricity
4. Low coefficient of thermal expansion and high thermal
conductivity (20 W/m.k)
5. Great thermal shock resistance, it's up to 1000ºC under the
special atmosphere
6. High mechanical strength and well resistance to impact than
other advance ceramics
7. Heat & high-temperature resistance, The max. service temperature
can be up to 1300ºC
8. Chemical and corrosion resistance, resistant to almost all
inorganic acids and many organic acids
9. At the same time, Silicon nitride is a high-performance
electrical insulation materia.
Application:
High speed bearing, high precision bearing; vacuum bearing; high/low temperature bearing, non-magnetic bearing, high precision ball screw; Si3N4 ball can also be used as valve ball and metering ball in chemical pump, high-temperature pump, metering pump. Si3N4 ball can also be used in linear slider for high temperature and corrosion resistance.
More pictures:





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