12mm Bore Bearing - 38mm Round Pulley U-Groove Track Roller Bearing 12x38x11mm

12mm Bore U-Groove Track Roller with 38mm Round Pulley
✔️ 12mm x 38mm x 11mm Nylon Pulley Bearing

This U-groove track roller combines a smooth nylon pulley with a precision steel ball bearing inside, designed for guiding doors, tracks, or sliding assemblies. The round pulley runs quietly while the steel bearing core handles the load.

✅ Bore (inner diameter): 12mm
✅ Outer diameter: 38mm
✅ Tire width: 11mm
✅ Pulley type: White nylon U-groove
✅ Core: Steel ball bearing
✅ Standard: Metric
✅ Quantity: 1 bearing

💡 Why choose a nylon pulley with a steel bearing core?
You get smooth, low-noise rolling with the strength of a metal bearing.

• Nylon reduces friction and noise in track systems

• Steel bearing ensures long-lasting load capacity

• U-groove design helps keep the roller on track under side loads

If you need a quiet yet durable guide wheel for your track system, this one’s a solid pick.