●● The main advantages of silicon nitride balls compared to steel balls are:
1. Weighs 59% less than steel balls, significantly reducing the centrifugal force, abrasion, and wear on the raceway during high-speed and accelerated operation of the bearing.
2. The modulus of elasticity is 44% higher than that of steel, meaning the deformation is significantly less than that of steel under load.
3. Higher hardness than steel, reaching 78 HRC.
4. Low friction coefficient.
5. The coefficient of thermal expansion is 1/4 that of steel, capable of withstanding drastic temperature changes.
6. Achieves a smooth surface finish with Ra values up to 4-6 nanometers.
7. High Temperature Resistance: Silicon nitride ceramic balls maintain high strength and hardness at temperatures up to 1050°C.
8. Rustproof and capable of operation under oil-free lubrication conditions.
9. More resistant to chemical corrosion than steel.
10. Metal-free contamination.
11. Non-magnetic
12. Electrical insulation.
13. No adhesive wear present.
The combination of these superior properties makes silicon nitride the preferred choice for high-performance bearing rolling elements material.
●●Application:
Silicon nitride ceramic balls are suitable for various bearings with stringent performance requirements: high-speed/ultra-high-speed bearings, high-precision bearings, vacuum bearings, high/low-temperature bearings, non-magnetic bearings, and high-precision ball screws; they can also be used as valve balls and measuring balls in chemical industry pumps, high-temperature pumps, and metering pumps.
Silicon nitride ceramic balls are generally assembled into hybrid bearings, suitable for high-tech industries such as aerospace and other industries. They are also widely used in other sectors, including chemicals, metallurgy, medicine, food, oilfields, and electronics.
●● Product Features: Stable performance, excellent consistency, meets ASTM F2094-03a standard.
Product Specifications: 0.4mm ~ 100mm.
●● Available Grades: G3-G40.
●●Note:
1) Primarily in black silicon carbide balls.
2) We have a large inventory available to meet immediate shipping requirements.
