

Zirconia Bearing Description:
- Type:Zirconia Bearing
- Material:Zirconia crucibles ceramic Bearing
- Quantity:1pcs If there are need more quantites, get wholesale price please contact us.E-mail us at info@labshopx.com
- Customize:If you need others size,we can customize as your size.E-mail us at info@labshopx.com
- Import duties or taxes are not included in the item price or shipping charges. These charges are the buyer's responsibility.
Zirconia Bearing Deatails:
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Zirconia ceramic bearings offer magnetoelectric insulation, wear and corrosion resistance, self-lubrication, and withstand extreme temperatures.
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Suitable for harsh environments and special working conditions.
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Made from Zirconia (ZrO2) ceramic materials for rings and rolling elements.
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PTFE is standard for retainers, with options like glass fiber reinforced nylon 66, special engineering plastics, stainless steel, and brass available.
Zirconia Bearing Specification:
Specification of bearing ceramic materials: | ||||||
Item | Unit | Silicon nitride Si3N4 | Zirconia ZrO2 | Alumina 99.5% A12O3 | Silicon carbide | Bearing steel |
Density | g/cm³ | 3.23 | 6.05 | 3.92 | 3.12 | 7.85 |
water absorption | % | 0 | 0 | 0 | 0 | 0 |
Thermal expansion coefficient | 10-6/K | 3.2 | 10.5 | 8.5 | 3 | 12.5 |
Young's modulus of elasticity | Gpa | 300 | 210 | 340 | 440 | 208 |
Poisson's ratio | ∕ | 0.26 | 0.3 | 0.22 | 0.17 | 0.3 |
Hardness (Hv) | Mpa | 1500 | 1200 | 1650 | 2800 | 700 |
Bending strength (room temperature) | Mpa | 720 | 950 | 310 | 390 | 520 (tensile strength) |
Bending strength (700℃) | Mpa | 450 | 210 | 230 | 380 | ∕ |
Compressive strength (room temperature) | Mpa | 2300 | 2000 | 2200 | 1800 | ∕ |
Fracture toughness | Mpa*m | 6.2 | 10 | 4.2 | 3.9 | 25 |
Thermal conductivity (room temperature) | W/m*k | 25 | 2 | 26 | 120 | 40 |
Specific resistivity (room temperature) | Ω*mm2/m | >1013 | >1015 | >1016 | >103 | 0.1-1 |
Maximum working temperature (without load) | ℃ | 1050 | 750 | 1750 | 1550 | 300 |
Acid and alkali corrosion resistance | ∕ | Strong | Strong | Strong | Strong | Weak |
Zirconia Bearings Features:
- Corrosion Resistance: Highly resistant to most strong acids (except hydrofluoric), alkalis, salts, and seawater. Suitable for harsh environments like plating, electronics, chemical processing, shipbuilding, and medical equipment.
- High-Temperature Performance: Operates effectively at 300°C - 800°C (with balls), 180°C - 260°C (with retainers). Ideal for furnace kilns and manufacturing equipment.
- Self-Lubricating: Low friction coefficient and smooth surface reduce lubrication needs. Silicon nitride variants offer excellent self-lubrication, beneficial in vacuum environments.
- Non-Magnetic: Absence of magnetism and dust absorption prevents premature wear and noise. Suitable for demagnetization equipment and sensitive instruments.
- Electrical Insulation: High electrical resistance prevents arcing damage. Safe for power equipment with insulation requirements.
- Low Density: Lower density than steel reduces centrifugal force on the outer ring by up to 40%, extending service life.
- Thermal Stability: Less affected by thermal expansion and contraction than steel, ensuring consistent clearance in environments with significant temperature fluctuations.
- High Elastic Modulus: Resists deformation under stress, enabling higher speeds and precision.