Technical SPECs
Our ceramic shaft products mainly use two major materials: 99% alumina and zirconium oxide.
| Property | Alumina (99%) | Zirconia (3Y-TZP) |
|---|---|---|
| Density | 3.8 g/cm³ | 6.05 g/cm³ |
| Flexural Strength | 300–400 MPa | 1,200 MPa |
| Thermal Conductivity | 24 W/m·K | 2–3 W/m·K |
| Surface Finish | Ra ≤0.1 µm | Ra ≤0.2 µm |
Ceramic Shafts: High-Performance Solutions for Precision Engineering
Ceramic shafts are precision-engineered components made from advanced materials like alumina (Al₂O₃) and zirconia (ZrO₂), designed to deliver exceptional wear resistance, thermal stability, and corrosion immunity. These shafts are critical in industries requiring high-speed rotation, minimal friction, and long-term reliability, such as aerospace, semiconductor manufacturing, and chemical processing. Their non-conductive properties and lightweight design further enhance performance in demanding environments.
By Features
Our ceramic shafts are customized according to customer requirements, with different features. Typical products are as follows:
High wear resistance for textile machinery, reducing fiber breakage and energy consumption.
Stable at 1,200°C, ideal for aerospace turbines and industrial kilns.
Balances strength and thermal stability for hybrid EV powertrains.
Ultra-low thermal expansion, used in semiconductor wafer handling robots.
Fracture toughness 6–8 MPa√m for silicon nitride, ideal for CNC spindles.
Low friction (μ≈0.2) for food processing and automotive transmissions.
Resists acids/alkalis for chemical pumps and pharmaceutical equipment.
0.5–5 mm diameter for medical endoscopes and microfluidic devices.
Product Feature Box
Our ceramic shafts are customized according to customer requirements. There are some key common features as follows for reference.
Alumina shafts achieve Vickers hardness of 1,500–1,800 HV, reducing wear by 90% compared to steel.
Operate continuously at 1,600°C (Al₂O₃) or 1,200°C (ZrO₂), ideal for high-temperature applications.
Resistant to acids, alkalis, and molten metals, ensuring durability in corrosive environments.
Alumina shafts (3.8 g/cm³) reduce rotational inertia, cutting energy consumption by 20–30%.
5–10x service life in abrasive environments.
Self-lubricating properties reduce maintenance costs.
Ceramic Shafts Application
Available ceramic shafts in diameters are from 1 mm to 200 mm, with grooved or tapered designs. The application areas of these products are mainly in the following four aspects:
-
Semiconductor: Precision shafts for wafer handling robots and vacuum chambers.
-
Aerospace: Turbine engine components and sensor shafts.
-
Chemical Processing: Corrosion-resistant pump shafts for aggressive fluids.
-
Medical: Biocompatible shafts for surgical tools and imaging devices.
Ceramic shafts excel in corrosive settings due to their chemical inertness. For example, alumina (Al₂O₃) resists HCl and NaOH, maintaining structural integrity where stainless steel corrodes. In chemical pumps, ceramic shafts reduce replacement frequency by 70% and eliminate contamination risks. Their non-porous surface also prevents bacterial growth, critical for pharmaceutical applications.
For high-speed systems, prioritize low density and high fracture toughness. Zirconia (ZrO₂) offers superior strength (1,200 MPa) and thermal shock resistance, ideal for aerospace turbines. Alumina is better for electrical insulation and cost efficiency. Always match material properties to operational stresses—e.g., SiC for extreme abrasion.
Ceramics are brittle, so cracked shafts typically require replacement. However, innovations like laser cladding or sol-gel recoating can repair minor surface defects. For critical systems, use real-time wear monitoring to detect micro-cracks early.
-
Semiconductor: Ultra-precise shafts for lithography systems (tolerances ±0.005 mm).
-
Energy: SiC-coated shafts for fuel cells, reducing interfacial resistance by 40%.
-
Automotive: Lightweight shafts for EV motors, improving energy efficiency.
-
Use alignment tools to avoid impact during assembly.
-
Pair with compatible bearings (e.g., silicon nitride) to minimize friction.
-
Follow torque specifications (5–10 N·m) to prevent thread damage.
-
Conduct post-installation ultrasonic testing to verify integrity.