Ceramic Ball Bearing Si3N4 12x18x4 Sealed ABEC 5 Precision Radial Deep Groove Bearing With Double Seals Stainless Steel Race Ideal For High Load Industrial Applications And High Performance Machinery

This sealed bearing uses ceramic Si3N4 balls and a stainless steel cage, built for high-speed rotation and low friction in precision tooling. It's a robust choice for motors, 3D printers, CNC machines, and robotics where lasting performance and dust protection matter.

✅ 12x18x4 mm size with 12 mm bore
✅ Si3N4 ceramic balls reduce wear and friction
✅ Stainless steel cage and housing for durability
✅ Self-lubricated grease SRL for maintenance-free use

💡 What is a ceramic sealed ball bearing used for in precision machinery?

This handy bearing type shines where high speed and precise motion matter.

• Used in precision motors, 3D printers, CNC machines
• Ideal for high speed, low friction operation
• Dust and moisture protection with double rubber seals
• Ceramic Si3N4 balls reduce wear and extend life