Full Ceramic Si3N4 Ball Bearings 4x11x4 Miniature 20 Pack For Low Friction High Rigidity Corrosion Resistance Ideal For Precision Instrumentation Robotics Medical Equipment And Industrial Applications

Full Ceramic Si3N4 Bearing 4x11x4, 20 Pack set
✔️ 4x11x4 mm full ceramic bearing, Si3N4, PTFE cage, 20 pcs

These miniature bearings are built with silicon nitride ceramic balls and races, delivering low friction and high rigidity for compact systems. They’re ideal in robotics, CNC modules, model vehicles, and other precision gear setups where sealed ball bearing performance and chemical resistance matter.

✅ Ball Material: Si3N4 ceramic
✅ Cage Material: PTFE
✅ Inner Diameter (ID): 4 mm
✅ Outer Diameter (OD): 11 mm
✅ Width: 4 mm
✅ Pack: 20 bearings

💡 What is a full ceramic bearing typically used for?

These handy bearings are built for high-speed, dry, low-friction operation in compact machines.

- Handy for robotics, drones, and CNC axes requiring precise motion - Great in harsh environments thanks to chemical resistance - Lightweight design improves efficiency in tight spaces - Long service life with minimal maintenance in sealed systems