634-2Z Deep Groove Ball Bearing Double Shielded 4x16x5 mm Inner Diameter 4 mm Outer Diameter 16 mm Width 5 mm Single Row Radial Bearing For Precision Machinery High Load Capacity Low Friction Industrial Grade

Shielded 634-2Z Deep Groove Ball Bearing 4x16x5mm
✔️ ID 4 mm x OD 16 mm x W 5 mm, shielded, single bearing

This compact shielded ball bearing is widely used in small machinery, hobby projects, printers, and robotics where smooth rotation and dust resistance matter.

✅ Inner diameter 4 mm (0.157 in)
✅ Outer diameter 16 mm (0.63 in)
✅ Width 5 mm (0.197 in)
✅ Dynamic load rating 1.11 kN
✅ Static load rating 0.38 kN
✅ Shielded on both sides (2Z) for dust resistance

💡 What is a ball bearing used for and why are shielded ones handy?

Handy explanation: bearings reduce friction and survive in dusty setups.

- They support radial loads with low friction in rotating shafts - Shielded designs keep dust out and grease in, extending life - They’re handy for small machines, printers, and DIY builds