フルセラミックベアリング21.5x31x7mm 5mm .5mm 21.5x31x7mm 6804型改良型セラミックボールベアリング。産業用機械の精密用途や、ロボット工学、CNC 、航空宇宙部品などの高速システム向け。

Full Ceramic Bearing 21.5x31x7mm single unit
✔️ ID 21.5mm, OD 31mm, width 7mm; zirconia ceramic, PTFE cage

These full ceramic bearings are high-performance parts designed for precision machines, robotics, linear slide units, medical equipment, and demanding environments where non-magnetic, corrosion-resistant components matter. The 21.5mm ID bore, 31mm outer diameter, and 7mm width fit standard metric housings used in CNC gear and industrial equipment.

✅ Inner diameter 21.5 mm; outer diameter 31 mm; width 7 mm
✅ Material: Zirconia ceramic races and balls, PTFE cage
✅ Type: Full ceramic bearing, 6804 modified ball bearing
✅ Package: 1 bearing per order

💡 What is a full ceramic bearing used for in precision machinery and why choose zirconia? A handy, high-performance option for demanding environments: - High-speed, low-friction operation - Excellent chemical and corrosion resistance - Lightweight, non-magnetic construction - Long service life in challenging settings