11.5x21x5 Full Ceramic Silicon Nitride Bearing

Single 11.5x21x5mm Full Ceramic Bearing One Unit For Machines
✔️ Inner 11.5mm OD 21mm Width 5mm PTFE Cage Si3N4 Ceramic Balls Single

This single ball bearing offers reduced friction for rotary motion applications where precision is critical for performance.

✅ Inner diameter measures exactly 11.5 millimeters on shaft
✅ Outer diameter sits at 21 millimeters for housing fit
✅ Width thickness is 5 millimeters overall for mounting depth
✅ PTFE cage holds Si3N4 ceramic balls for durability
✅ Full ceramic construction resists corrosion and chemical wear well

💡 Why choose silicon nitride material for industrial bearings instead of steel.
- Ceramic compounds handle higher speeds and temperatures better than metal alloys
- Reduced rolling resistance leads to longer service life in equipment machines
- Non-conductive properties protect sensitive electronics nearby from accidental damage