Open Ceramic Ball Bearing 12x21x5 Si3N4 Ceramic Balls Nylon Cage ABEC-5 Precision Radial Deep Groove Bearing with Stainless Steel Outer Ring and Inner Race for High Durability and Low Friction
✔️ 12mm ID x 21mm OD x 5mm W; open nylon cage; Si3N4 ceramic balls
Open ceramic ball bearing designed for high-speed, low-friction operation in precision setups like 3D printers, CNC machines, electric motors, and robotics. This S6801 assembly uses Si3N4 ceramic balls with stainless steel races and a Nylon cage for durability and smooth rotation.
✅ Type: Deep groove radial bearing with ceramic balls
✅ Material: Stainless steel races, Si3N4 ceramic balls, nylon cage
✅ Size: ID 12 mm, OD 21 mm, width 5 mm (12x21x5)
✅ Precision: Premium ABEC-5 EMQ quality for high-speed performance
💡 What is a ceramic open bearing used for in precision machinery? This handy bearing is built for tight tolerances and fast spins in motors, printers, and automation. - high-speed precision in CNC routers and robotics - handy for maintaining shaft alignment in compact assemblies - easy inspection and lubrication management with open design - supports 12x21x5 mm bore size and compatible with stainless steel races