3x9x4 Shielded Ball Bearing Miniature, Double ZZ Shields, Pre Lubricated With Grease, Made From Durable 52100 Chrome Steel, High-Precision Small Bearing For Hobby, Model Making, RC Drones And Machinery, Bore 3mm OD 9mm Width 4mm

Ceramic Shielded 3x9x4 Bearing for Precision Miniatures
✔️ One 3x9x4 ceramic shielded ball bearing, pre-lubed, ZZ

This miniature ceramic shielded ball bearing measures 3x9x4 mm and is built for precision applications where dust resistance and smooth, low-friction movement matter. It's commonly used in micro robotics, camera gear, and small mechanical assemblies to extend life and performance.

✅ Size: 3 x 9 x 4 mm (ID 3 mm, OD 9 mm, width 4 mm)
✅ Type: Deep groove ball bearing with ceramic shield (Si3N4) and ZZ shields
✅ Lubrication: Pre-lubed with grease
✅ Material/ shielding: 52100 chrome steel components with sealed design
✅ Quantity: piece

💡 What is a ceramic shielded bearing used for in small precision projects? This handy device helps with long life and smooth motion.
- Handy for micro robotics and cameras due to low friction and dust protection
- Shields prevent dust ingress in tight spaces
- Great for hobby machines where compact sizing matters
- Improves drive accuracy in precision mechanisms