Five Pcs R188 2RS Deep Groove Ball Bearings One Quarter Inch Inner Diameter One Half Inch Outer Diameter Three Sixteenth Inch Height P5 ABEC 5 Miniature Chrome Steel Shielded Z3 For Engineering

R188-2RS Deep Groove Bearings, 1/4x1/2x3/16, 5-pack
✔️ Chrome steel, 5 pcs, double shields, P5 accuracy, Z3 noise

These compact sealed ball bearings fit in tight spaces across small machines and hobby projects. They’re ideal for upgrading motors, fans, rollers, and power tools that demand smooth, quiet operation and reliable precision.

✅ ID 1/4 in (6.35 mm) x OD 1/2 in (12.70 mm) x H 3/16 in (4.76 mm)
✅ Chrome steel construction for strength, wear resistance, and long life
✅ Double metal shields protect the balls and race, with Z3 quiet operation
✅ Grease lubrication and P5 precision for reliable high-accuracy performance
✅ Pack of 5 bearings for small motors, fans, rollers, and hobby gear

💡 What is a sealed ball bearing used for in small machinery?

- Keeps shafts aligned and rotation smooth in compact setups - Dust protection and lubrication retention for long life - Handy for small motors, fans, and hobby robotics where space is tight - Improves reliability in light-industrial gear and tool upgrades