20-Pack Full Ceramic Miniature 685-2rs Sealed Si3N4 Miniature Ball Bearings 5x11x5mm

20 Pack Full Ceramic Sealed 685-2rs Miniature Ball Bearing
✔️ Inner 5mm Outer 11mm Width 5mm PTFE Cage Si3N4 Ceramic Balls

These sealed miniature bearings handle high speeds without heating up. Perfect for hobby projects, small appliances, and light-duty automotive repairs that need reliable spin.

✅ 5 millimeter inner diameter fits small shafts reliably
✅ 11 millimeter outer race protects against debris impact
✅ Polyamide cage keeps lubricant inside efficiently

💡 Are full ceramic bearings better than steel ones?
Their properties make them handy alternatives in high speed or chemical exposure zones.
Si3N4 material resists wear across varying temperatures.
Stops rust naturally during operation without coatings.