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| Precision Zirconia Ceramic Ball Bearings |
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1.Character
Becken Technology Develop Precision Zirconia Ceramic Ball bearings have excellent electrical and magnetic resistance, wear and corrosion resistance, self-lubrication, maintenance free when working, especially in the high and low temperature applications etc. The cage is normally made by PTFE.Can be used in strong corrosion situation. |
2.Comparison of Bearing Material Properties Data
The quality of Becken Technology Develop Precision Zirconia Ceramic Ball bearing is strictly controlled during production from the powder, molding and precise machining. All the professional process can ensure our high quality product.
Item |
Unit |
9Cr15 |
9Cr18 |
Si3N4 |
Al2O3 |
ZrO2 |
Density |
g/cm3 |
7.8 |
7.9 |
3.2 |
3.95 |
6 |
Coefficient of Thermal Expansion |
10-6/℃ |
11 |
17 |
3.2 |
9.1 |
10.5 |
Modulus of Elasticity |
GPa |
208 |
200 |
320 |
380 |
210 |
Hardness |
- |
800 |
700 |
1700 |
1800 |
1300 |
Bending Strength |
MPa |
2400 |
2600 |
900 |
220 |
1000 |
Impact Toughness |
Nm/Cm2 |
20 |
25 |
7 |
3.5 |
11 |
Thermal Conductivity |
W/mK |
30-40 |
15 |
3.5 |
25 |
2.5 |
Specific Resistivity |
Ω·m |
1 |
0.75 |
1018 |
108 |
105 |
Specific Heat |
J/Kg·℃ |
450 |
450 |
800 |
880 |
400 |
Application Temperature |
℃ |
120 |
150 |
1000 |
1850 |
800 |
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3.Applications
Mainly used in corrosive, high strength conditions and long working life, such as chemical industry, navigation, petrochemical, machinery and metallurgy etc. |
Superior Quality Inspections for the Ceramic Bearing Balls |
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