25 Pack Full Ceramic 686 Si3N4 Miniature Ball Bearings 6x13x5mm Set Of 25 High Precision Ceramic Bearings With PTFE Cage For Low Friction Durability And Corrosion Resistance Suitable For Micro Machines RC Drones Watches And Precision Equipment

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