Full Ceramic Bearing 12x21x5mm Precision Ball Bearing For High Speed Machinery And Industrial Equipment, Lightweight Yet Highly Durable With Superior Wear Resistance, Low Friction And Improved Performance

Single 12x21x5mm full ceramic bearing for high temps
✔️ 12x21x5 mm full ceramic bearing with zirconia balls

These full ceramic bearings use zirconia balls and PTFE cages, delivering exceptional corrosion resistance and low friction in high-temperature and clean environments. Ideal for precision equipment, laboratory instruments, and medical devices where heat and reliability matter.

✅ Bore 12 mm (0.472 in); OD 21 mm (0.827 in); width 5 mm (0.197 in)
✅ Material: Races zirconia ceramic; Cage PTFE; Balls zirconia
✅ 耐熱温度：最大180℃（356℉）
✅ Pack: 1 bearing (model 6801 full ceramic)

💡 What is a ceramic bearing used for in precision machinery? Handy parts built to handle heat and high precision in demanding settings. - High-temperature tolerance and corrosion resistance - Lightweight zirconia balls reduce wear and friction - PTFE cage provides smooth, reliable rotation - Fits standard 12x21x5 mm bore in common assemblies