Silicon Nitride Balls

Ⅰ. Product Introduction

Si3N4 ceramic balls are precision ceramics manufactured by high-temperature sintering in a non-oxidizing atmosphere. They possess high strength, high wear resistance, high temperature resistance, corrosion resistance, acid and alkali resistance, and can be used in seawater for extended periods. They also exhibit excellent electrical and magnetic insulation properties. Their strength and hardness remain virtually unchanged at 1000℃. With a density of 3.2 g/cm³, they are approximately one-third the weight of bearing steel. The low centrifugal force during rotation allows for high-speed operation. They also possess self-lubricating properties, enabling their use in highly contaminated environments without lubrication. They have become the preferred ball material for ceramic bearings and hybrid ceramic ball bearings.

Ⅱ. Product Performance:

Material: Silicon Nitride Ceramic

Density: 3.23-3.27 g/cm³

Color: Black & Gray

Grade: G3–G100

Specifications: φ0.6–φ110 mm

Sintering Process: HIP & GPS

Ⅲ. Performance Parameters of Silicon Nitride Balls

Ⅳ. Product Features:
Lightweight, wear-resistant, long lifespan, high strength, self-lubricating, and electrically insulating.  It provides reliability and safety in applications requiring high rotational speed, maintenance-free operation, and protection against electrochemical corrosion.

Ⅴ. Application Fields:
High-speed/ultra-high-speed bearings, machine tool spindles, electric vehicles, wind power generation, electric motors, X-ray CT scanners, aerospace, and semiconductor vacuum pumps; it can also be used as valve balls and measuring balls in chemical pumps, high-temperature pumps, and metering pumps.

Ⅵ. Specifications and Dimensions of Si3N4 Bearing Balls for Different Applications: