Full Ceramic Si3N4 Bearings 4x12x4 Miniature Pack Of 20 High Precision Silicon Nitride Ball Bearings For Ultra Low Friction And Corrosion Resistant Performance In Industrial And Hobby Applications
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604 Full Ceramic Si3N4 Bearings 4x12x4mm 20 Pack
✔️ 4 mm bore, 12 mm OD, 4 mm width; ceramic Si3N4 bearings, 20-pack
✔️ 4 mm bore, 12 mm OD, 4 mm width; ceramic Si3N4 bearings, 20-pack
These compact ceramic bearings use Si3N4 silicon nitride balls and races for high stiffness, corrosion resistance, and low friction in tight spaces. They’re a handy pick for robotics, precision sliders, and small machinery where reliable performance matters.
✅ 4 mm bore, 12 mm outer diameter, 4 mm width
✅ Si3N4 ceramic balls with PTFE cage for low friction operation
✅ High hardness and corrosion resistance for tough environments
✅ Pack of 20 bearings for bulk projects
💡 What is the purpose of ceramic bearings in small motion systems?
These handy bearings are used in tight spaces where heat, wear, and corrosion are concerns.
- Low friction and long life in precision sliders and micro machines
- High temperature tolerance and chemical resistance
- Lightweight and non magnetic, friendly to sensitive electronics
- Ideal for hobbyists and light industrial setups needing reliable bearings