Ceramic balls are spherical, rolling elements that provide higher stiffness, lower thermal expansion, lighter weight, increased corrosion resistance, and higher electrical resistance than steel balls. They are made from a variety of ceramic materials.
LILY Bearing provide a wide range of ceramic ball options across a variety of sizes. Material options includeSilicon nitride (Si3N4), Zirconia (ZRO2), Alumina(Al2O3) and Silicon carbide (SIC) from 0.4mm to just over 115mm in diameter with the most common sizes in between. Precision grades provided are 5, 10, 16, 25 and 100.
Ceramic balls have excellent resistance to wear and seizure, they offer solutions for high temperature environments (Up to 800C for Si3N4) high rigidity, light weight and are non magnetic with insulating properties.
Applications include high speed spindle bearings, solenoid valves, down hole pumps, vacuum equipment, gas monitoring devices and turbo chargers.
How Ceramic Balls are Made
Ceramic balls are manufactured by pressing a ceramic powder binder mixture in a preform shape. After the ball is sintered, the part lines are removed via finish-grinding. Lapping and precision finishing is then used to design or grade dimensions and product specifications such as diameter, sphericity, and surface finish. For applications that require a fully-dense material with specific material properties, hot isostatic pressing (HIP) may be used after sintering. HIP produces ceramic balls with a pore-free microstructure and micron-sized grains.