30 Pack Full Ceramic Ball Bearings 689 ZrO2 Miniature Bearings 9x17x5mm With PTFE Cage Pack Of 30 High Precision For Hobby CNC Robotics And Precision Machinery Ideal For Dremel Projects 3D Printers Micro Assemblies And Jewelry Making

30-Pack Zirconia Ceramic 689 Miniature Bearings 9x17x5mm
✔️ Pack of 30, full ceramic with Zirconia balls and PTFE cage

These 689 full ceramic miniature bearings are compact, high-precision parts built for tight spaces. They are commonly used in robotics, model engineering, and precision instrumentation where smooth rotation and low wear matter. Dimensions: 9 mm x 17 mm x 5 mm (0.354 in x 0.669 in x 0.197 in).

✅ Inner diameter 9 mm (0.354 in), outer diameter 17 mm (0.669 in), width 5 mm (0.197 in)
✅ Full ceramic bearing type 689 with zirconia balls
✅ Zirconia ceramic races and PTFE cage for low friction
✅ Pack of 30 bearings for bulk purchases or replacements
✅ High hardness and corrosion resistance for long life

💡 What is a 689 full ceramic miniature bearing used for in precision gear setups? This handy bearing helps reduce friction and wear in tight, high-speed assemblies.
- Ideal for micro-robotics and model assemblies requiring precise motion - Suitable for high-speed shafts needing low friction and heat control - Great choice for environments demanding corrosion resistance and long service life