|
[China]
Trade Verify
Address: Room 1008, TongLe Business Mansion, JiaXing 314033, ZheJiang, China
Contact name:Leo Wu
ZHEJIANG TOP BEARINGS CO., LTD. |
|
Verified Suppliers
|
|
|
Corrosion Resistance Ceramic Plain Bearings ZrO2 Material Ceramic Cage
Ceramic Cage , All-ceramic Bearings
Ceramic cage has excellence performance as wear and corrosion resistance, high strength, lubrication and maintenance free when working. Adopting the ceramic cage, Ceramic bearing can be used in the most inclemency environments as corrosive, low temperature, high vacuum. The material of almost ceramic cage is ZrO2.
Ceramic cage has excellence performance as wear and corrosion resistance, high strength, lubrication and maintenance free when working. Adopting the ceramic cage, Ceramic bearing can be used in the most inclemency environments as corrosive, low temperature, high vacuum. The material of almost ceramic cage is ZrO2.
| Comparison of bearing material technical data | ||||||
| Technical data | unit | GCr15 | 9Cr18 | Si3N4 | AL203 | ZrO2 |
| Density | g/cm³ | 7.8 | 7.9 | 3.2 | 3.95 | 6 |
| a Coefficient of expansion | 10^-6/℃ | 11 | 17 | 3.2 | 9.1 | 10.5 |
| E modulus of elasticity | Gpa | 208 | 200 | 320 | 380 | 210 |
| μ Poisson ratio | 0.3 | 0.3 | 0.26 | 0.27 | 0.3 | |
| HV Hardness | 800 | 700 | 1700 | 1800 | 1300 | |
| δ Flexural strength | Mpa | 2400 | 2600 | 900 | 220 | 1000 |
| δ Compressive Strength | MPa | 2000 | 1500 | 3500 | ||
| Kc Impact strength | Nm/cm² | 20 | 25 | 7 | 3.5 | 11 |
| λ Thermal conductivity | W/mk | 30-40 | 15 | 3.5 | 25 | 2.5 |
| Ω Specific resistivity | mm²/m | 1 | 0.75 | 10^18 | 10^8 | 10^5 |
| Specific heat | J/KgK | 450 | 450 | 800 | 880 | 400 |
| Application temperature | ℃ | 120 | 150 | 1000 | 1850 | 800 |
| Anti-corrossion | No | poor | Good | Good | Good | |
| Cycle stress | 10*10^6 | 10*10^6 | 50*10^6 | 30*10^6 | 50*10^6 | |
| Destroy model | peel | peel | peel | fracture | peel/fracture | |
| Anti-magnetism | Yes | Yes | No | No | No | |
| Dimension stability | bad | poor | Good | Good | Good | |
| Insulate properties | No insulation | No insulation | Good | Good | Good | |
| Basic properties of staple engineer plastic | ||||||||
| Material | HDPE | PP | POM | PA66 | PVDF | PPS | PTFE | PEEK |
| Long-time working temp. | 90 | 100 | 110 | 100 | 150 | 230 | 260 | 280 |
| Density | g/cm3 | 0.91 | 1.42 | 1.14 | 1.77 | 1.35 | 2.18 | 1.32 |
| Ball indentation hardness | 50 | 80 | 170 | 170 | 80 | 190 | 30 | |
| Tensile stress | 25 | 30 | 70 | 80 | 50 | 75 | 25 | 95 |
| Sliding friction coefficient | 0.29 | 0.3 | 0.34 | 0.35-0.42 | 0.3 | 0.08-0.1 | 0.3-0.38 | |
| Melted temperature | 130 | 165 | 175 | 260 | 172 | 280 | 327 | 343 |
| Short-time highest application temperature | 90 | 140 | 150 | 170 | 150 | 260 | 260 | 300 |
| Coet of Inear expansion (10^-5/K) | 13-15 | 17 | 10 | 8 | 13 | 5 | 12 | 5 |
| Dielectric constant at 1 Mhz(10^6HZ) | 2.4 | 2.25 | 3.7 | 3.6-5 | 8 | 2.1 | 3.2-3.3 | |
| Volume resisrivity (Ω·cm) | >10^15 | >10^24 | >10^14 | 10^13 | 10^12 | >10^13 | 10^14 | 10^13 |
| flammability UL94 | + | + | - | (+) | (+) | - | + | + |
| Anti-weathering | - | - | - | - | - | - | + | - |
| Note: + =resistant; (+) =partly resistant; - =non-resistant | ||||||||
