Full Ceramic Sealed Bearing 4x8x3 ZrO2 Miniature

4 x 8 x 3 Full Ceramic Ball Bearing
✔️ Zirconia Ceramic Mini Bearing 4mm x 8mm x 3mm

This full ceramic 4 x 8 x 3 bearing is a handy choice for high-temperature, non-magnetic, and moisture-sensitive applications. Built entirely from zirconia ceramic with PTFE cage and covers, it delivers smooth, quiet rotation where metal bearings can’t perform. Sold as one bearing.

✅ Inner diameter 4mm
✅ Outer diameter 8mm
✅ Width 3mm
✅ Full zirconia ceramic races
✅ Zirconia ceramic balls
✅ PTFE cage
✅ PTFE covers (white)
✅ One bearing included

💡 Why are full ceramic ball bearings used in extreme environments?
Ceramics stay stable under heat, moisture, and chemical exposure.
- Non-magnetic and electrically insulating for sensitive systems
- Low friction keeps rotation smooth without metal contact
- Handy for lab gear, medical devices, and corrosion-prone setups

This full ceramic 4 x 8 x 3 bearing gives your project clean, stable performance where traditional steel bearings fall short.