MR128 ZZ 8x12x3.5mm Miniature Bearing – Ultra Smooth

MR128 ZZ 8x12x3.5mm Miniature Bearing – Ultra Smooth is a compact, double-shielded chrome steel bearing designed for low-friction rotary motion in precision applications. Ideal for motors, robotics, 3D printers and small mechanical assemblies.

Features

• Ultra-smooth rotation with low noise and reduced vibration
• Double metal shields (ZZ) protect against dust and contamination
• High-hardness chrome steel construction for durability and wear resistance
• Compact 8×12×3.5mm profile for space-constrained designs
• Easy press-fit installation and compatible with common shafts

Technical Details

• Model: MR128 ZZ 8*12*3.5mm
• Material: Chrome steel (bearing steel)
• Inner diameter: 8 mm
• Outer diameter: 12 mm
• Width: 3.5 mm
• Grade: ZV3

Package includes: 1 × MR128 ZZ 8x12x3.5mm miniature bearing.

Warning/Reminder: Ensure correct shaft fit and alignment. Avoid heavy axial loads beyond bearing rating. Clean installation recommended; shields are not a seal against liquids.

This bearing improves performance by reducing friction and heat, extending motor and gearbox life while increasing positional accuracy in precision equipment. Its durable chrome steel and double shields deliver reliable operation in continuous-use systems and tight assemblies.

Perfect for hobbyists and engineers working on RC, CNC, printers, motors or robotics, backed by a 2-year warranty. Add the MR128 ZZ to your project toolkit today to simplify assembly and boost efficiency.

Used in small electric motors, idler wheels, and precision shafts; ready to install out of the package with long-lasting reliability.