30 Pack Of 6904 Full Ceramic ZrO2 Ball Bearings, 20mm Inner Diameter, 37mm Outer Diameter, 9mm Width, High Precision Ceramic Bearings For Industrial Machinery, Low Friction And Corrosion Resistant
✔️ Pack of 30 pieces, Zirconia ceramic bearings, 20x37x9 mm
These 6904 full ceramic ball bearings use zirconia ceramic balls and PTFE cages to deliver low friction, chemical resistance, and non-magnetic performance. They’re commonly used in CNC, robotics, medical equipment, and precision instruments where metal bearings are undesirable.
✅ ID 20 mm (0.79 in), OD 37 mm (1.46 in), width 9 mm (0.35 in)
✅ Material: Zirconia (ZrO2) ceramic; Ball: ZrO2; Cage: PTFE
✅ Pack size: 30 bearings per order
💡 What is a full ceramic bearing used for in precision equipment?
These handy bearings are built for environments where metal bearings risk contamination or corrosion.
- High hardness and wear resistance for long service life
- Non-magnetic and corrosion-resistant for clean rooms and medical gear
- Low friction with zirconia balls and PTFE cage