639ZZ Shielded Ball Bearing 9mm Bore 30mm Outer Diameter 10mm Width Deep Groove Bearing With Double Metal Shields To Keep Out Dust And Dirt For RC Cars Drones Small Machinery And Precision Applications

Single 9x30x10mm Shielded Ball Bearing, 9mm Bore, 30mm OD
✔️ 9mm bore, 30mm outer diameter, 10mm width, ZZ shields for dust

The 639 ZZ shielded ball bearing is a compact, deep groove bearing designed for small machinery, hobby projects, and precision gadgets. It comes with double shields to help keep dirt out while the grease stays in, making it ready for quick drops into your next build.

✅ Inner diameter: 9 mm
✅ Outer diameter: 30 mm
✅ Width: 10 mm
✅ Shield type: Double metal shields (ZZ) for dust protection
✅ Material: Chrome steel, pre-lubed with grease
✅ Pack size: 1 bearing

💡 What is a sealed ball bearing used for in compact hobby machinery? This handy guide covers common uses and quick setup. - Applications include small motors, 3D printers, and robotics - Shielded ZZ bearings reduce dust ingress for longer life - Regular maintenance tips help maximize grease life