W684ZZ Shielded Miniature Bearing 4mm x 9mm x 4mm

W684ZZ Shielded Miniature Ball Bearing
✔️ Chrome Steel Dual Shields - 4x9x4mm

The W684ZZ is a miniature deep groove ball bearing crafted from durable chrome steel for smooth rotation and long service life. Built with double metal shields, it provides protection against dust and debris while keeping lubrication sealed inside, making it ideal for high-speed and compact mechanical setups.

✅ Type: Deep groove ball bearing
✅ Model: W684ZZ
✅ Material: Chrome steel (52100 alloy steel)
✅ Shields: Double metal shields (ZZ)
✅ Lubrication: Pre-lubricated with grease
✅ Inner diameter: 4mm
✅ Outer diameter: 9mm
✅ Width: 4mm
✅ Size: 4 × 9 × 4 mm
✅ Dynamic load rating (Cr): 640 N
✅ Static load rating (Cor): 230 N
✅ Limiting speed (grease): 59,000 RPM
✅ Quantity: 1 bearing

💡 Why use shielded miniature bearings?
They’re a handy solution for high-speed precision work.

• Dual shields keep out dust while holding grease inside

• Pre-lubed and ready for installation with minimal maintenance

• Perfect for robotics, drones, instruments, and hobby projects

If you want a tough and reliable small bearing for fast, precise applications, the W684ZZ is a solid pick.