12x21x5 Millimeter Si3N4 Ceramic Ball Bearing With Stainless Steel Ring And Nylon Cage Open Deep Groove Precision Bearing ABEC5 Quality For High Speed Applications Ideal For Motors Drones RC Models And Robotics

S6801 Ceramic Ball Bearing 12x21x5mm, Sealed ABEC-7
✔️ Single bearing, sealed, ABEC-7, Si3N4 ceramic balls

These high-precision bearings feature Si3N4 ceramic balls in stainless steel races with a nylon cage, delivering smooth, low-friction performance in robotics, 3D printing, automation, and CNC machinery.

✅ Inner diameter: 12 mm
✅ Outer diameter: 21 mm
✅ Width: 5 mm
✅ Material: stainless steel races, ceramic balls (Si3N4), nylon cage

💡 What is a sealed ceramic bearing used for in precision machinery? This handy component is designed for high-speed, high-precision needs in compact systems. - High-speed rotation support for motors and CNC - Reduced wear and extended life with ceramic balls - Quiet, smooth operation in precision equipment