25 Pack 687 2RS Full Ceramic Bearings Si3N4 Sealed Miniature Ball Bearing 7x14x5mm For Precision Machinery Hobby RC Models And DIY Projects PTFE Cage Corrosion Resistant Low Friction High Durability Ideal For High Speed Applications

These compact full ceramic bearings use Si3N4 balls and races for exceptional durability and low friction, making them ideal for precision equipment, robotics, and lab or hobby projects where reliability matters.

✅ Pack size: 25 bearings
✅ Inner diameter: 7 mm
✅ Outer diameter: 14 mm, width 5 mm (7x14x5 mm)
✅ Material: Si3N4 ceramic balls and races, lightweight and strong
✅ Cage: PTFE for low friction and smooth running

💡 What is a sealed ceramic bearing used for in precision machinery? - Handy for reducing friction in high-speed, precise motion systems - Uses Si3N4 ceramic balls and races for corrosion resistance - PTFE cage reduces wear and ensures smooth operation - Sealed design helps keep lubrication in and contaminants out