Alumina ceramic shafts are typically manufactured from high-purity alumina (95%–99.8%) and are primarily used in high-performance precision components, such as pump systems and bearing assemblies.
Compared to traditional metal shafts, alumina shafts offer superior hardness, wear resistance, and corrosion resistance, ensuring stable, long-term operation even under conditions involving high temperatures, high speeds, corrosive media, and abrasive environments.
With professional production equipment and a large inventory of molds, GORGEOUS CERAMICS (GGS) can provide you with high-quality, low-cost products and services. Inquiries are welcome!
Alumina ceramic shaft performance
| Propriedade | Unidade | AL2O3 99.7 | AL2O3 99.5 | AL2O3 99 | AL2O3 95 |
| Pureza | — | 99.7% | 99.5% | 99% | 95% |
| Densidade | g/cm3 | 3.92 | 3.9 | 3.8 | 3.7 |
| Resistência à flexão | MPa | 375 | 370 | 340 | 304 |
| Resistência à compressão | MPa | 2450 | 2300 | 2250 | 1910 |
| Módulo de elasticidade | GPa | 380 | 370 | 330 | 330 |
| Resistência à fratura | MPam1/2 | 4.5 | 4.3 | 4.2 | 3.8 |
| Dureza | HRA | 91 | 91 | 90 | 89 |
| Dureza Vickers | HV1 | 1600 | 1550 | 1450 | 1400 |
| Coeficiente de Expansão Térmica | 10- 6 K-1 | 7.8 | 7.8 | 7.7 | 7.5 |
| Condutividade térmica | Com mk | 32 | 32 | 25 | 25 |
| Estabilidade ao Choque Térmico | △T.℃ | 220 | 220 | 200 | 200 |
| Temperatura máxima de operação | °C | 1750 | 1750 | 1700 | 1500 |
| Resistência de volume a 20℃ | Ω·cm | 1015 | 1015 | 1014 | 1014 |
| Rigidez Dielétrica | kV/mm | 22 | 20 | 16 | 15 |
| Constante Dielétrica (temperatura ambiente) | / | 10 | 11 | 11.5 | 11 |
| Fator de perda dielétrica em MHz | tan δ | 1×10-3 | 1×10-3 | 3×10-3 | 3×10-3 |
Technical specifications, material properties, and performance data are typical values and are for reference only. Actual values may vary depending on manufacturing tolerances, testing conditions, material grades, and application environments.
For critical engineering applications, please contact GORGEOUS CERAMICS (GGS) for detailed material reports, inspection data, and technical support.
Applications of alumina ceramic shafts
Magnetic Drive Pumps and Chemical Pumps
Alumina ceramic shafts are one of the most common core components of magnetic drive pumps, mainly used in various chemical transfer pumps, acid and alkali liquid circulation pumps, seawater treatment equipment, and pharmaceutical delivery systems.
Motor and Bearing Systems
The superior low friction and high wear resistance of alumina ceramic shafts make them suitable for use in various motor and bearing systems, including micro motors, brushless motors, fan motors, and high-speed bearing assemblies. This effectively reduces wear and improves rotational accuracy and service life.
Equipamentos Semicondutores
Alumina ceramic shafts possess key properties highly suitable for semiconductor equipment, such as non-magnetic properties, high cleanliness, electrical insulation, and high temperature resistance. They are commonly used in semiconductor equipment, including wafer handling equipment, CMP equipment, vacuum equipment, and automated transport systems.
Automation Equipment and Precision Machinery
Alumina ceramic shafts ensure the long-term stable operation of automated equipment and precision machinery. They are commonly used in guide shafts, drive shafts, positioning mechanisms, and precision roller systems.
Why choose GORGEOUS CERAMICS (GGS)?
GORGEOUS CERAMICS (GGS) offers mass production, OEM/ODM support, custom design support, and various custom sizes.
With 15 years of experience in ceramic manufacturing and ISO 9001:2015, IATF 16949:2016, and ISO 14001:2015 environmental management system certifications, GORGEOUS is fully capable of providing customers with higher quality alumina ceramic shafts.
Perguntas frequentes
Why choose alumina ceramic shafts over stainless steel shafts?
Unlike stainless steel shafts, ceramic shafts are immune to rust. Furthermore, alumina is characterized by high hardness, excellent wear and corrosion resistance, and electrical insulation, making it ideal for use in highly corrosive and high-wear environments.
What purity grades are available for alumina ceramic shafts?
Common purity grades for alumina include 95%, 96%, 99%, 99.5%, and 99.8%; the higher the purity, the better the performance.
Can alumina ceramic shafts be used in pumps?
Yes, ceramic shafts can be used in various pump applications, such as magnetic drive pumps, chemical pumps, and metering pumps.
What is the maximum operating temperature of alumina ceramic shafts?
Alumina ceramics can withstand temperatures up to 1,600°C.
Can GORGEOUS CERAMICS (GGS) manufacture custom alumina ceramic shafts?
Yes, we can manufacture custom shafts—including stepped, threaded, grooved, and precision-ground shafts in various diameters and lengths—based on your specific requirements and the drawings or CAD files you provide.
