Pack Of 25 699-2RS Full Ceramic Si3N4 Bearings 9x20x6 Miniature Ball Bearings With PTFE Cage For Low Friction High Durability In Small Motors RC Drones And Micro Machinery For Precision Components And Model Makers In Hobbyist And Industrial Applications
✔️ Ceramic Si3N4 balls, PTFE cage, sealed 2RS, pack of 25
These are full ceramic bearings using silicon nitride Si3N4 for both balls and races, designed for high hardness, corrosion resistance, and low friction in tiny mechanical assemblies. They’re ideal for precision hobby projects, robotics, drones, and instrument gear where small bearings fit tight spaces.
✅ 9x20x6 mm dimensions (ID 9 mm, OD 20 mm, width 6 mm)✅ Si3N4 ceramic balls and races for high wear resistance
✅ PTFE cage for smooth rotation and low friction
✅ Pack of 25 bearings, sealed 2RS for moisture protection
💡 What is a sealed ball bearing used for in small mechanical assemblies? A quick look at the role and benefits in everyday projects. - Handy for compact gear and automation setups needing reliable rotation and protection - Great for beginner to advanced hobby kits like robotics, RC gear, and small CNC add-ons - Ceramic construction reduces wear, heat, and corrosion in tight environments - Sealed design helps keep dust and moisture out while maintaining smooth motion