3mm Bore Bearing x 13.5mm U-Groove Track Roller Bearing 3x13.5x4.4mm

3mm Bore U-Groove Nylon Pulley Bearing
✔️ 3mm x 13.5mm x 4.4mm - Track Roller with Built-In Steel Bearing

This U-groove track roller combines a smooth nylon pulley with a precision steel ball bearing for guided motion on rails or tracks. Ideal for sliding systems, 3D printers, and custom automation builds where light weight and quiet rolling are key.

✅ Inner Diameter (Bore): 3mm
✅ Outer Diameter: 13.5mm
✅ Tire Width: 4.4mm
✅ Pulley Material: White nylon for quiet, smooth operation
✅ Bearing: Built-in steel ball bearing
✅ Style: U-groove track roller bearing
✅ Standard: Metric
✅ Quantity: 1 bearing

💡 What are U-groove nylon pulley bearings used for?
These bearings are great for guided movement along round rods or edges, offering quiet motion, low friction, and reduced wear on the track - perfect for compact, low-load automation projects.

Roll smooth and steady - grab this nylon U-groove bearing and keep your build moving with precision!