10 Pack Shielded Miniature Ball Bearings MR128ZZ 8mm Bore 12mm Outer Diameter 3.5mm Width Chrome Steel Double Shielded Dust Resistant For Precision Small Machinery

Compact Shielded 8mm Mini Bearing, 10-Pack
✔️ 8x12x3.5 mm bore, double shielded, chrome steel, grease, 10 pcs

These compact shielded miniature bearings are designed for tight spaces in hobby RC cars, robotics, model planes, and small gearboxes. Double shields keep dust out in dirty environments, and pre-lubricated grease means immediate use right out of the package.

✅ Inner diameter (ID): 8 mm
✅ Outer diameter (OD): 12 mm
✅ Width: 3.5 mm
✅ Double shielded for dust protection
✅ Chrome steel construction for durability
✅ Pre-lubricated with grease; max RPM up to 47,000
✅ Dynamic load rating Cr: 540 N; Static load rating Cor: 270 N
✅ Pack of 10 bearings

💡 What is a shielded miniature ball bearing used for in hobby and small machinery?

These tiny bearings handle precise motion while staying clean in dusty environments.

• Shields keep dust out and extend service life.
• Ideal for tiny gearboxes, RC, drones, and hobby robotics.
• Supports smooth radial movement with low friction.
• Fits standard 8x12x3.5 mm bore sizes used in many kits.