Loose Ceramic Ball Bearing G20 Grade 19mm Si3N4 Silicon Nitride Ball 0.748 Inch High Precision Ceramic Ball For Bearings And Machinery Applications Suitable For High Speed Spindles Medical Equipment Aerospace Robotics And Precision Instrumentation

Ceramic Si3N4 G20 19mm Loose Ball Bearing, 1pc
✔️ 19 mm diameter (0.748"), ceramic Si3N4 ball, G20 grade, single piece

This single loose ceramic ball measures 19 mm across and is made from silicon nitride (Si3N4), known for hardness and wear resistance. It's commonly used in precision bearings, DIY projects, scale models, and specialty machinery requiring ceramic balls.

✅ 19 mm diameter ceramic ball (Si3N4)
✅ G20 grade for precise performance
✅ Lightweight, low friction and corrosion resistant
✅ Fits standard races in sealed bearing apps

💡 À quoi sert un roulement à billes en céramique dans les machines de précision ?

• Handy for high-speed rotations and reduced heat in small gear trains
• Si3N4 ceramic offers wear resistance and long life in demanding environments
• Useful in sealed bearing setups to minimize maintenance