Ten Pack Shielded Ball Bearings 4mm Bore 8mm Outer Diameter 3mm Width Double Shielded MR84ZZ Miniature Bearings Chrome Steel for Durability Dust Protection and Precise Movement in RC Mini Projects and Mechanical Assemblies

These compact MR84ZZ shielded, sealed ball bearings are tiny precision bearings used in hobby RC models, robotics, and other compact machinery. They protect the rotating element from dust and keep grease inside, making them ideal for tight spaces where smooth motion matters.

✅ Inner diameter: 4 mm; outer diameter: 8 mm; width: 3 mm
✅ Material: chrome steel for durability and strength
✅ Shielding: double shielded to block dust and contamination
✅ Lubrication: pre-lubricated with grease for smooth operation
✅ Pack: 10 bearings per pack

💡 What is a small shielded 4x8x3 mm bearing used for in hobby RC and precision gear trains? Small but mighty, these bearings are handy in tight spaces and help motion stay smooth. - Handy for RC cars, boats, planes, and small robotics - Useful in compact gear trains and precision linkages - Provides reliable radial and axial support in tiny assemblies