Full Ceramic Si3N4 Ball Bearings 8x28x9 mm Miniature Set Of 20, Silicon Nitride Bearings For Precision, Low Friction, Corrosion Resistant And Long Life, Ideal For Industrial And Commercial Applications
✔️ Sealed full ceramic ball bearing set, Si3N4, 8x28x9 mm, 20pcs
638 Full Ceramic Si3N4 Bearings are compact precision bearings designed for high-speed motion and long service life in tough environments. They are commonly used in robotics, CNC machines, model engineering, and lab equipment where friction and corrosion must stay low, and they pair well with linear slide unit applications.
✅ ID 8 mm, OD 28 mm, width 9 mm
✅ Ball material: Si3N4 ceramic; Cage: PTFE
✅ Inner/outer races: Si3N4 ceramic
✅ Pack size: 20 bearings per pack
💡 What is a ceramic ball bearing used for in precision machinery? Ceramic bearings excel where high speed, low friction, and corrosion resistance matter. - Handy for robotics and CNC projects needing smooth motion - Great for high-temperature or wet environments - Useful in medical and scientific equipment requiring long life