Aluminum Oxide Bearing Balls are engineered ceramic components designed for high-demand environments. These balls possess outstanding resistance to most corrosive chemicals—excluding hydrochloric acid, hydrofluoric acid, and strong alkalis. They are non-porous, lightweight, and significantly harder than steel. With very low friction coefficients and the ability to operate at higher rotational speeds than traditional steel balls, they are ideal for high-precision, high-speed, and corrosion-resistant bearing applications in aerospace, chemical processing, and various industrial sectors.
Property | Details |
---|---|
Material | Aluminum Oxide (Al₂O₃) |
Shape | Bearing Ball |
Purity | ≥99%, 99.7%, 99.99%, or customized |
Precision Grade | G10 - G60 |
Dimensions | 1 - 100 mm (≈1/32" to ≈4") or customized |
Density | 3.9 g/cm³ |
Due to their exceptional hardness and low friction, Aluminum Oxide balls are perfect for precision bearing systems operating at high RPMs, such as turbines, spindles, and dental instruments.
Their superior chemical resistance makes them ideal for use in chemical processing equipment, fluid pumps, and valves that handle corrosive or reactive fluids.
We tailor our packaging solutions to the size and nature of the product:
Small items are securely packed in polypropylene (PP) boxes.
Larger products are shipped in custom wooden crates.
All packaging uses appropriate cushioning materials to ensure safe transportation.
Packaging options include cartons, wooden boxes, or fully customized solutions to meet your specific needs.
Q1: What are Aluminum Oxide Bearing Balls?
They are precision-engineered ceramic balls made from Al₂O₃, known for hardness, chemical resistance, and light weight, suitable for harsh environments where metal balls fail.
Q2: What advantages do Aluminum Oxide balls have over steel balls?
Higher hardness and wear resistance
Lighter weight, reducing rotational inertia
Superior corrosion resistance
Non-magnetic and electrically insulating
Capable of higher speeds with lower friction
Q3: In which environments are Aluminum Oxide Bearing Balls most effective?
They excel in corrosive, high-speed, non-lubricated, and high-temperature settings such as chemical plants, aerospace applications, and medical devices.
Property | Aluminum Oxide (Al₂O₃) | Silicon Carbide (SiC) |
---|---|---|
Material Composition | Aluminum Oxide (Al₂O₃) | Silicon Carbide (SiC) |
Hardness (Mohs) | ~9 | ~9.5 |
Density | ~3.9 g/cm³ | ~3.1 g/cm³ (lighter) |
Wear Resistance | Excellent | Superior |
Corrosion Resistance | Excellent (except HF, HCl, strong alkalis) | Outstanding (resistant to most acids and alkalis) |
Thermal Conductivity | Moderate | Very High |
Thermal Shock Resistance | Moderate | Excellent |
Electrical Properties | Electrically insulating | Semiconductive |
Friction Coefficient | Very Low | Low |
Max Operating Temp | ~1600 °C | ~1800 °C |
Cost | Moderate | Higher |
Looking for a Ceramic Material Supplier?
Advanced Ceramic Materials (ACM) is a trusted global supplier of advanced ceramics, dedicated to providing high-performance solutions for demanding industrial applications. Aluminum Oxide Bearing Balls feature excellent thermal shock resistance and non-wettability to molten aluminum, making them ideal for precise metal flow control in casting and foundry processes.