Pack Of セラミックZirconia ）Pack Of 3x8x3mm Pack Of 、PTFE3x8x3mm 。低摩擦・耐摩耗性に優れ、高精度を実現。ホビー用モーター、ドローン、RC 、マイクロメカニズム、精密機器などに最適。

30-Pack Full Ceramic Miniature Ball Bearings 3x8x3mm ZrO2
✔️ 30 pcs, 3x8x3mm, full ceramic zirconia bearings, PTFE cage

These miniature bearings are fully ceramic, delivering high rigidity and low friction for precise motion. They’re ideal for small precision instruments, hobby robotics, micro machines, and jewelry-making tools where lightweight, corrosion-resistant parts matter.

✅ Inner diameter: 3 mm
✅ Outer diameter: 8 mm
✅ Width: 3 mm
✅ Type: Full ceramic ball bearing
✅ Balls: Zirconia (ZrO2) ceramic
✅ Races: Zirconia (ZrO2) ceramic
✅ Cage: PTFE
✅ Quantity: 30 bearings

💡 What is a ceramic bearing used for in small-scale machinery?
Ceramic bearings are handy for precise, low-friction motion in compact devices. - High temperature and corrosion resistance in micro systems - Low friction for cooler, smoother operation - Lightweight strength improves efficiency in tiny motors - Long service life in demanding environments