Full Ceramic Si3N4 Bearings 4x16x5 Miniature Pack Of 20 Silicon Nitride Ball Bearings For Precision Machines, Low Friction And High Wear Resistance, Corrosion Resistant, Ideal For Industrial And Hobby Applications

Miniature Ceramic Bearing Si3N4 4x16x5 20-Pack
✔️ 4x16x5 mm full ceramic Si3N4 ball bearing, PTFE cage, 20-pack

These 4x16x5 mm full ceramic bearings use silicon nitride (Si3N4) balls and races for exceptional hardness, low friction, and corrosion resistance. They’re ideal in compact assemblies like micro robotics, precision hobby CNC rigs, medical devices, and instrumentation where durability matters.

✅ Inner diameter 4 mm; outer diameter 16 mm; width 5 mm
✅ Material: Si3N4 ceramic balls and races; PTFE cage
✅ Pack size: 20 bearings per order; sealed, maintenance-free
✅ Applications: robotics, micro-mechanics, and precision equipment

💡 What is a ceramic bearing used for in precision miniature systems?

Ceramic bearings like Si3N4 offer low friction, high rigidity, and corrosion resistance, handy for tiny robotic joints, medical devices, and hobby micro-machines. - Low friction motion for smooth operation - High rigidity and long life in tight spaces - Excellent corrosion resistance in humid or chemical environments