634 Full Ceramic Ball Bearing 4x16x5 Mm High Precision Miniature Bearing for Industrial and Robotic Applications Ceramic Balls and Races Provide Low Friction Lightweight Corrosion Resistance Long Term Reliability in Precision Machinery

This 634 full ceramic bearing uses zirconium oxide balls and a PTFE cage for low friction, corrosion resistance, and long service life. It’s built for precision robotics, CNC systems, lab equipment, and compact machinery.

✅ ID 4 mm, OD 16 mm, width 5 mm
✅ Ball material: zirconium oxide (ZrO2); cage: PTFE
✅ Races: inner/outer made from ZrO2 ceramic; overall ceramic unit
✅ Pack size: 1 bearing

💡 What is a ceramic bearing used for in high precision systems? Ceramic bearings provide smooth motion and long life in demanding setups. - Handy for robotics, CNC, and automation projects - Great where corrosion resistance and dry operation matter - Useful in labs and precision instruments