635-2RS Full Ceramic Si3N4 Ball Bearings 5x19x6 Miniature Pack Of 20 Silicon Nitride Sealed Bearings For Low Friction High Precision Performance In Industrial Machinery And Precision Hobby Projects

Mini ceramic bearing set: 5x19x6 Si3N4, 20-pack
✔️ 5x19x6 mm full ceramic Si3N4, sealed, 20-piece pack

These full ceramic bearings use silicon nitride balls and PTFE cages for excellent wear resistance in high-speed or dust-prone environments, commonly used in robotics, CNC, medical devices, and precision machinery.

✅ 5x19x6 mm inner diameter 5 mm, outer diameter 19 mm, width 6 mm
✅ Full ceramic Si3N4 balls and races for high hardness and corrosion resistance
✅ PTFE cage provides low friction and smooth operation
✅ Sealed on both sides (2RS) for dirt/moisture protection
✅ Pack of 20 bearings in each order

💡 What is a ceramic bearing used for in precision machinery and harsh environments?

Ceramic bearings are built for long life and steady performance in demanding environments. - high-speed, low-friction operation with ceramic Si3N4 balls - excellent corrosion resistance and reduced wear in challenging environments - ideal for robotics, CNC, medical devices and other precision gear