4mm Bore Bearing - 12mm Pulley U-Groove Track Roller 4x12x4mm

4mm Bore Shielded U-Groove Pulley Bearing
✨ Track Roller Ball Bearing - 4mm x 12mm x 4mm

This compact U-groove track roller bearing features a 4mm bore and double metal shields to protect against dust. Ideal for small tracks, sliding systems, and lightweight guiding applications in automation or DIY builds.

🟢 Size: 4mm x 12mm x 4mm
🟢 Inner diameter: 4mm
🟢 Outer diameter: 12mm
🟢 Tire width: 4mm
🟢 Groove type: U-groove
🟢 Shields: Double metal (ZZ)
🟢 Quantity: 1 bearing
🟢 Tolerance: ±0.5mm