10 Pack Ceramic Ball Bearings 6x12x4 Sealed Miniature with Double Seals Pre Lubricated Grease for Smooth Operation and Dust Protection Ideal for RC Models, Drones, Robotics, Precision Mechanisms, and Hobby Projects Requiring Low Friction Ceramic Bearings
✔️ 10-pack sealed ceramic bearings, 6x12x4mm, pre-lubed for smooth operation
These compact 6x12x4 sealed bearings use ceramic balls to cut friction and extend life in small hobby devices. They’re a popular fit for RC cars, model kits, and precision gearboxes where space matters.
✅ Inner diameter 6 mm, outer diameter 12 mm, width 4 mm
✅ Ceramic balls reduce friction and wear for long life
✅ Sealed on both sides to protect from dust and contamination
✅ Pre-lubricated with grease for smooth operation up to 49,000 RPM; Cr 710 N / Cor 290 N
✅ Pack of 10 bearings fits many RC kits and mini chassis
| 寸法 | 値 |
|---|---|
| Inner diameter | 6 mm |
| Outer diameter | 12 mm |
| Width | 4 mm |
💡 What is a sealed ceramic bearing used for in hobby gear and why pick ceramic?
Ceramic bearings offer smoother motion and longer life in compact, high-RPM setups.
- Handy for RC cars, model kits, and precision gear trains
- Low friction reduces heat and wear during extended runs
- Ceramic balls resist corrosion and provide consistent performance
- Pre-lubed options make setup quicker and maintenance easier