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Silicon nitride (Si₃N₄) ceramic balls are a high performance engineering material that is widely used in various high load, high speed, high temperature and corrosion environments. Its excellent mechanical properties and chemical stability make it an ideal choice for advanced manufacturing.
| Name | Silicon Nitride Ball（Si3N4） |
| Size | φ0.4mm-φ100mm |
| Grade | G5-G40 |
| Tolerance | |
| Hardness | HRC75-80、HV:1300-1600 |
| Density | 3.2g/cm3 |
| Performance | 1. 59% lighter than steel balls, which means less centrifugal force and less groove penetration at high speeds and accelerations 2. The modulus of elasticity is 44% larger, which means less load deformation 3. Smaller friction coefficient 4. The linear expansion coefficient of silicon nitride ceramic ball is 3.2×10-6/K, which is almost 1/4 of bearing steel and can endure high temperature 5. Can achieve excellent surface finish, Ra can be 4~6 6. Can endure high temperature, high hardness and strength up to 1050℃ |
| Purpose | 1. Silicon nitride ceramic balls are used in various types of bearings, including high-speed, ultra-high-speed, high-precision, vacuum, high/low temperature, and non-magnetic bearings, as well as in high-precision ball screws. 2. They are also utilized in chemical pumps, high-temperature pumps, and metering pumps as valve balls or measuring balls. 3. These ceramic balls are commonly assembled into hybrid bearings and are suitable for industries such as chemical, metallurgy, food, oil fields, and electronics. |
