30-Pack roulements à billes miniatures 688-2RS 30-Pack en céramique ( 8x16x4mm , Sealed joint en caoutchouc Sealed 8x16x4mm Sealed cage en PTFE, Sealed aux machines de précision et aux projets de loisirs créatifs. Idéaux pour RC de haute précision, les minuscules boîtes de vitesses, les drones, les articulations robotiques et les instruments de laboratoire.

30-Pack Full Ceramic Miniature Ball Bearings 8x16x4mm
✔️ 30 pcs, 8x16x4 mm, full ceramic 688-2RS with PTFE cage

These are high-precision full ceramic miniature bearings featuring zirconia ceramic balls, zirconia races, and a PTFE cage. They’re ideal for sealed ball bearing applications in precision instruments, robotics, medical devices, and hobby projects where low friction and corrosion resistance matter.

✅ Inner diameter: 8 mm
✅ Outer diameter: 16 mm
✅ Width: 4 mm
✅ Ball material: Zirconia (ZrO2)
✅ Races: Zirconia (ZrO2)
✅ Cage: PTFE
✅ Pack size: 30 bearings

💡 What is a ceramic ball bearing and where should you use it?

Ceramic bearings excel in tough environments where speed, wear resistance, and corrosion resistance matter. - long-life, low-wear ceramic bearings for high-speed applications - zirconia ball bearings deliver corrosion resistance and low friction - sealed 688-2RS variants reduce contamination for clean environments - ideal for precision instruments, lab robotics, and outdoor gear