30-Pack 688 Full Complement Full Ceramic ZrO2 Miniature Ball Bearings 8x16x4mm for Precision Machinery Low Friction High Load Capacity Durable Ceramic Bearing Set Ideal for Medical Devices Robotics CNC Projects 3D Printing and Precision Instrumentation

These are full ceramic miniature ball bearings with zirconia balls and races, designed for precision motion in compact assemblies. They’re commonly used in drones, optical instruments, robotics, and high-speed equipment where lightweight, corrosion resistance, and low friction are essential.

✅ Bearing type: 688 full ceramic full complement
✅ Ball material: Zirconia (ZrO2)
✅ Cage: No cage
✅ Races material: Zirconia Ceramic (ZrO2)
✅ Inner diameter: 8 mm
✅ Outer diameter: 16 mm
✅ Width: 4 mm
✅ Quantity: 30 bearings

💡 What is a ceramic miniature bearing used for in precision assemblies? It’s a handy option for applications needing smooth motion in tight spaces. Used in robotics, drones, and optical equipment where low friction is key. - Handy for high-speed operations in compact systems. - Ceramic construction provides corrosion resistance and light weight. - Compatible with standard 688-size configurations for easy swaps.