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| Categories | Alumina Ceramic |
|---|---|
| Place of Origin: | Made In China,Zhejiang,Jinhua |
| Brand Name: | Dayoo |
| MOQ: | Negotiate |
| Price: | Negotiate |
| Delivery Time: | Negotiable |
| Payment Terms: | Negotiable |
| Dimensional Tolerance: | ±0.001 mm |
| High Purity: | 99.5% or higher |
| Dielectric Loss: | 0.0002 |
| Mechanical Strength: | High |
| Corrosion Resistance: | Excellent |
| Compressive Strength: | 350 MPa |
| Purity: | 96%,99% |
| Thermal Conductivity: | 35 W/mK |
| Elastic Modulus: | 380 GPa |
| Alumina Content: | 92% & 95% |
| Volume Resistivity: | 10^14 Ω·cm |
| Chemical Resistance: | Excellent |
| Electrical Insulation: | Yes |
| Shape: | Round |
| Melting Point: | 2,072°C |
| Packaging Details: | Carton |
| Company Info. |
| Dayoo Advanced Ceramic Co.,Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
Alumina Ceramic Components Lightweight Wear-Resistant And Chemically Resistant For Precision Machinery Applications
Our premium alumina ceramic bushings and guide columns are manufactured from ultra-high purity 99.7% Al₂O₃ material, specifically engineered for high-precision, wear-resistant applications. ISO 6474-1 certified with exceptional hardness (HV1800-2000) and ultra-low friction coefficient (0.07), these components achieve IT5-grade dimensional accuracy, representing a revolutionary solution for precision machinery applications.
Semiconductor Equipment: Wafer handling robot guide columns, lithography machine precision bushings
Medical Devices: Surgical robot joint bushings, CT scanner rotating guide components
Automation Lines: Linear module guide columns, industrial robot wrist joints
Precision Instruments: Optical platform adjustment bushings, measuring equipment guide mechanisms
Automotive Manufacturing: Turbocharger bearing sleeves, high-pressure fuel pump guide columns
✦ Nanometer Precision: Roundness ≤0.5μm, cylindricity ≤1μm
✦ Superior Wear Resistance: Only 1/15 the wear rate of metal components
✦ Self-Lubricating: Dry friction coefficient 0.07-0.12
✦ Chemical Resistance: Withstands pH1-14 acidic/alkaline media
✦ Lightweight: Density 3.95g/cm³, 60% lighter than steel
| Parameter | Standard Grade | Enhanced Grade (Composite) |
|---|---|---|
| Material Purity | 99.7% Al₂O₃ | Al₂O₃-ZrO₂ Composite |
| Hardness (HV) | 1800 | 2000 |
| Compressive Strength | 2800MPa | 3500MPa |
| Bore Tolerance | H5 | H4 |
| Operating Temp. | -60~1200℃ | -60~1500℃ |
| Surface Roughness | Ra 0.05μm | Ra 0.02μm |
Nano Powder Prep: Chemical co-precipitation method (D50=0.2μm)
Injection Molding: Tungsten steel molds (±0.05% accuracy)
HIP Sintering: 1700℃/150MPa hot isostatic pressing
Ultra-Precision Machining: CNC internal grinding + laser dressing
Surface Treatment: Nano-polishing + DLC coating
Full Inspection: Air gauge measurement + white light interferometry
⚠ Professional Instructions:
Acclimate in constant temp environment for 24hrs pre-installation
Recommend hydraulic cold mounting (0.002-0.005mm interference)
Require 20-hour low-speed run-in period
Never strike directly with metal tools
Inspect clearance every 500 operating hours
Rapid Response: 48-hour delivery for standard specs
Technical Support: Tribological analysis services
Product Traceability: Laser-engraved QR codes
Customization: Non-standard sizes & composite structures
Q: How to select proper fit tolerance?
A: Recommend shaft H6/bore H5, clearance fit G6/h5 for high-speed
applications
Q: Suitable for vacuum environments?
A: Special vacuum-grade models available (<10⁻⁹Pa·m³/s
outgassing)
Q: Handling abnormal wear?
A: Minor wear repairable with ceramic-specific compounds, severe
wear requires replacement

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