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Zirconia Bearing Miniature Double Sealed Zirconia Bearing| NEXACULE - Zirconia Bearing

Zirconia Bearing Miniature Double Sealed Zirconia Bearing| NEXACULE

by NEXACULE
$0.00 - $0.00
$0.00
$115.00
$115.00 - $637.00
$115.00
Mode & ID*OD*H: UC204 20*47*32
Sealed: Without Sealed

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Please contact us after payment with your VAT number and consignee's full name:info@nexacule.com

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@nexacule.com
  • Customize:If you need others size,we can customize as your size.E-mail us at info@nexacule.com
  • Import duties or taxes are not included in the item price or shipping charges. These charges are the buyer's responsibility.

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.

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