4x12x5mm U-Groove Pulley Ball Bearing

U-GROOVE Track Roller Bearing
✨ 4mm x 12mm x 5mm - Extended Inner Ring Width

This 4x12x5mm U-groove track roller bearing is made for guiding along rails and tracks, offering smooth motion in compact applications like sliding systems, linear guides, or small transport mechanisms. With an extended 5mm inner ring and double metal shields, it's ready to run clean and quiet in tight setups.

🟢 Type: U-groove track roller bearing
🟢 Inner Diameter (Bore): 4mm
🟢 Outer Diameter: 12mm
🟢 Outer Ring Width: 4mm
🟢 Inner Ring Width: 5mm (extended for mounting)
🟢 Shield Type: ZZ (double metal shields)
🟢 Standard: Metric sizing
🟢 Tolerance: ±0.5mm
🟢 Pack Size: 1 bearing

Dimensions Table: