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| Price | USD10/piece |
| MOQ | 1 piece |
| Delivery Time | 5-8 working days |
| Brand | ZG |
| Place of Origin | CHINA |
| Certification | CE |
| Model Number | MS |
| Packaging Details | Strong wooden box for Global shipping |
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability | 10000 pieces |
| Place of Origin | CHINA | Size | Customized |
| Packaging Details | Strong wooden box for Global shipping | Color | Black |
| Material | silicon nitride | Model Number | MS |
| Supply Ability | 10000 pieces | Certification | CE |
| Brand Name | ZG | Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Price | USD10/piece | Delivery Time | 5-8 working days |
| Minimum Order Quantity | 1 piece | Features | excellent wear resistance; chemical inertness; no grinding in the product to be crushed; long service life |
Ceramic rolling bodies (balls, rollers) for rolling bearings
Ceramic rolling balls for rolling bearings with high-strength,resistant to corrosion and wear
Ceramic rolling elements for bearings have provided a new level of bearing performance and reliability. Thanks to unique properties of ceramic materials (primarily silicon nitride) it has been possible to significantly improve the durability and speed characteristics of bearings.
Related Data
| Main component | 99%Al2O3 | S-SiC | ZrO2 | Si3N4 | ||
|
Physical Property |
Density | g/cm3 | 3.9 | 3.1 | 6 | 3.2 |
| Water Absorption | % | 0 | 0.1 | 0 | 0.1 | |
| Sinter Temperature | °C | 1700 | 2200 | 1500 | 1800 | |
|
Mechanical Property |
Rockwell Hardness | HV | 1700 | 2200 | 1300 | 1400 |
| Bend Strength | kgf/mm2 | 3500 | 4000 | 9000 | 7000 | |
| Compression Intensity | Kgf/mm2 | 30000 | 20000 | 20000 | 23000 | |
|
Thermal Property |
Maximum
working temperature |
°C | 1500 | 1600 | 1300 | 1400 |
|
thermal
expansion coefficient 0-1000°C |
/°C | 8.0*10-6 | 4.1*10-6(0-500°C) | 9.5*10-6 | 2.0*10-6(0-500°C) | |
| 5.2*10-6(500-1000°C) | 4.0*10-6(500-1000°C) | |||||
| Thermal Shock resistance | T(°C) | 200 | 250 | 300 | 400-500 | |
| Thermal Conductivity | W/m.k(25°C | 31 | 100 | 3 | 25 | |
| 300°C) | 16 | 100 | 3 | 25 | ||
|
Electrical Property |
Resisting rate of Volume | ◎.cm | ||||
| 20°C | >1012 | 106-108 | >1010 | >1011 | ||
| 100°C | 1012-1013 | – | – | >1011 | ||
| 300°C | >1012 | – | – | >1011 | ||
|
Insulation
Breakdown Intensity |
KV/mm | 18 | semiconductor | 9 | 17.7 | |
| Dielectric Constant (1 MHz) | (E) | 10 | – | 29 | 7 | |
| Dielectric Dissipation | (tg o) | 0.4*10-3 | – | – | – | |
At present, wear-resistant parts made of ceramic materials, cemented and graphite are an integral part of pumps, compressors, turbines and pipeline fittings.
Main
applications:
Advantage of ceramic materials:
Materials:
