25個入り フルセラミック 686 Si3N4 ミニチュアボールベアリング6x13x5mm PTFEケージ付きの高精度セラミックベアリング25個セット。低摩擦、耐久性、耐食性に優れ、マイクロマシン、RC ドローン、時計、精密機器に適しています。

25-Pack Full Ceramic 686 Miniature Ball Bearings, 6x13x5mm
✔️ 25-pack full ceramic 686 bearings, 6x13x5mm (Si3N4) cage

These full ceramic bearings are designed for compact precision devices, from model kits to tiny linear slide units, drones, and micro-automation projects where clean, fast, and durable performance matters.

✅ Inner diameter 6 mm, outer diameter 13 mm, width 5 mm (6x13x5 mm / 0.236x0.512x0.197 in)
✅ Cage material PTFE for low friction and chemical resistance
✅ Balls and races are Si3N4 ceramic for high wear resistance
✅ Pack size: 25 bearings

💡 What is a ceramic ball bearing used for in precision miniature gear and robotics applications?

These handy components help maintain smooth, accurate motion in tiny systems.

- high-speed, low-friction performance in compact assemblies
- corrosion resistance and heat tolerance of ceramic components
- non-magnetic, lightweight design ideal for sensitive electronics
- long service life with low maintenance in harsh environments