Ceramic rod

zirconiainsulationwear-resistant

Product overview
Zirconia ceramic rods are commonly used in camera assemblies for guiding, support and wear-resistant components in lens adjustment and focusing mechanisms.

General description
These camera ceramic rods are manufactured from stabilized zirconia (ZrO2–Y2O3) using advanced ceramic processing to achieve fine grain size and consistent mechanical properties. Their combination of toughness, hardness and low thermal conductivity makes them suitable for precision optical mechanisms.

Zirconia rods feature:

• Coefficient of thermal expansion similar to iron
• High strength and hardness
• High fracture toughness
• Wear resistance
• Excellent thermal insulation
• Very high resistance to crack propagation
• Low thermal conductivity
• Corrosion resistance in acids and alkalis
• Modulus of elasticity similar to steel

Zirconia rods material properties:

• Composition: 94.5% ZrO2, 5.5% Y2O3
• Specific density: ≥6.03 g/cm3
• Hardness (HV): >12 GPa
• Coefficient of thermal expansion (20–400°C): 9.6 ×10⁻⁶ /K
• Elastic modulus: 205 GPa
• Fracture toughness: 8–10 MPa·m1/2
• Crushing load: ≥25 KN (for S ⊄6.5mm)
• Grain size: <0.5 μm
• Thermal conductivity: 3 W/(m·K)

Technical specifications

• Typical uses: guiding rods, supports, wear parts in lens/focus assemblies
• Key functional properties: high strength, high fracture toughness, wear resistance, low thermal conductivity, corrosion resistance
• Manufacturing tolerances and dimensions available on request