Sealed Ball Bearing 12x21x5mm 6801UU Double Shielded Precision Bearing For RC Wheels And Motors Dust And Contaminant Resistant With Two Seals For Smooth Rotation And Long Life In Hobby And Industrial Projects Ideal For RC Vehicles And Precision Assemblies

6801UU sealed ball bearings are compact, grease-filled units designed for small high-speed applications. They're commonly used in RC wheels, micro motors, gearboxes, and other compact machinery that benefits from a sealed, low-friction bearing.

✅ Inner diameter: 12 mm, Outer diameter: 21 mm, Width: 5 mm
✅ Seal: double-sided, dust protection
✅ Material: Chrome steel; Dynamic load Cr 1920 N; Static load Cor 1040 N
✅ Lubrication: Pre-lubricated with grease; max speed up to 20000 RPM

💡 What is a sealed ball bearing used for in small hobby robotics and RC gear? Sealed ball bearings protect against dust and wear, making them handy for compact assemblies. - Handy for RC wheels, micro motors, and small gearboxes - Seals protect against contamination and grease reduces maintenance - 12x21x5mm size fits compact, lightweight assemblies