30 Pack 638 Full Complement Ceramic Ball Bearings ZrO2 8x28x9mm No Cage High Precision Miniature Bearings For CNC Machines RC Hobby Drones And Industrial Use Suitable For Precision Instrumentation 3D Printers Robotics And Quiet Long Life
✔️ High-precision zirconia ball bearings with full ceramic build
These 638 full ceramic bearings use zirconia ceramic balls and ZrO2 races for low friction, light weight, and chemical resistance. Sized 8x28x9 mm, they're ideal for precision equipment, micro-machinery, CNC tools, and lab devices. Pack contains 30 bearings for wholesale orders.
| 寸法 | 値 |
|---|---|
| Inner diameter | 8 mm |
| Outer diameter | 28 mm |
| Width | 9mm |
✅ 638 full ceramic full-complement bearing (ZrO2) with no cage
✅ Inner diameter 8 mm, outer diameter 28 mm, width 9 mm
✅ Pack of 30 bearings for wholesale orders
✅ Zirconia ceramic balls and races deliver low friction and corrosion resistance
💡 What is a ceramic bearing used for in high-precision machinery and how does zirconia enhance performance? Ceramic bearings are handy in demanding environments. - low friction operation in precision equipment - corrosion resistance and thermal stability with zirconia - lightweight construction for high-speed applications - handy for CNC, medical devices, and lab gear