Si3N4 Full Ceramic Ball Bearings 12x21x5mm Pack Of 30 For Industrial Machinery And Precision Equipment High Durability And Low Friction Ceramics Ideal For CNC Automotive Robotics And High Load Applications

Full Ceramic 6801 Bearings: 12x21x5mm, 30-pack Si3N4
✔️ 30 pcs, 12x21x5 mm full ceramic Si3N4 bearings

These 6801 full ceramic bearings use Si3N4 ceramic for both races and balls, with a PTFE cage, designed for high-speed rotation and resistance to corrosion and heat. They’re ideal for precision machinery, chemical processing equipment, and environments where metal bearings wear fast.

✅ Inner diameter 12 mm; outer diameter 21 mm; width 5 mm
✅ Bearing type: 6801 full ceramic deep groove ball bearing (Si3N4)
✅ Cage material: PTFE (polytetrafluoroethylene)
✅ Pack size: 30 bearings per order

💡 What is a pillow block bearing used for in industrial machinery? Pillow block bearings are handy for supporting rotating shafts in a wide range of machines and setups. - Supports rotating shafts and alignment in conveyors, automation, and machinery - Handy for easy maintenance and reliable radial support - Ceramic variants offer corrosion resistance and low friction in tough environments