20 PCS R188ZZ Deep Groove Ball Bearings - 1/4 Inch x 1/2 Inch x 3/16 Inch - Both Sides Metal Shielded Chrome Steel Bearings for Small Mechanical Equipment (R188-ZZ)

R188ZZ Shielded Deep Groove Ball Bearings 1/4 x 1/2 x 3/16 in, 20 pcs
✔️ ID 1/4" (6.35mm) OD 1/2" (12.7mm) W 3/16" (4.76mm); shielded

These compact bearings are ideal for small mechanical gear, toys and models, office equipment, and medical devices where compact size and reliable rotation matter. Each bearing is chrome steel with shields on both sides to seal in grease and keep debris out, boosting lifespan and performance in tough spots. Pack of 20 ensures you have spares for quick swaps and assemblies.

✅ Shielded on both sides for dirt protection and long life
✅ Pre-lubricated chrome steel construction handles light-to-moderate loads
✅ Precision: ID 1/4" (6.35 mm); OD 1/2" (12.7 mm); W 3/16" (4.76 mm)
✅ 20 pcs per pack for multiple projects and replacements

💡 What is a common use for shielded ball bearings in hobby and light industrial projects?

They are handy for keeping rotation smooth in small gear, toys, and devices while resisting dust and dirt.

- In tiny robotics and model builds - In office devices and medical gear where quiet operation helps - For high-speed applications where precise clearance matters - A common replacement option in maintenance kits