10 Pack 8x13x4 Shielded Miniature Ball Bearings With ZZ Shields 52100 Chrome Steel Pre Lubricated Grease Durable Dustproof Bearings For RC Cars Drones 3D Printers And Precision Hobby Use

These shielded miniature bearings are compact, sealed on both sides with double metal ZZ shields, pre-lubricated with grease, and packed as a 10-piece set. Ideal for hobby robotics, RC models, 3D printers, and other tight-space assemblies where reliable rotation matters.

✅ 8x13x4 mm size: ID 8mm, OD 13mm, width 4mm
✅ Chrome steel 52100 for longevity
✅ Shielded with double metal shields (ZZ) for dust protection
✅ Pre-lubricated with grease for smooth operation
✅ Pack of 10 bearings in a plastic tube

💡 What is a shielded miniature bearing used for? Handy tiny bearings support precise rotation in small machines while guarding against dust and moisture.
- Ideal for tiny robotics, 3D printers, micro gearboxes, and hobby CNC projects
- Sealed shields protect internal races in dusty environments
- Pre-lubricated grease reduces maintenance and setup time
- Fits in tight spaces where reliable, smooth motion matters