4x13x7mm 4mm ID Bearing x 13mm OD Pulley U-Groove Track Roller Bearing

4 mm bore shielded U groove track roller pulley bearing
✔️ U groove track roller bearing 4x13x7 mm shielded

This single U groove track roller bearing is built for guided motion, cable tracking, and small pulley systems where smooth rolling and alignment matter. The U shaped groove helps keep belts, wires, or rails centered, while the metal shields help reduce dust entry during operation.

✅ Inner diameter: 4 mm
✅ Outer diameter: 13 mm
✅ Width: 7 mm
✅ U groove pulley style
✅ Double metal shields for dust protection
✅ Metric standard sizing
✅ Dimension tolerance: 0.5 mm
✅ Pack size: one bearing

Dimensions
ID: 4 mm
OD: 13 mm
Width: 7 mm

💡 Why are U groove track roller bearings used in guide and pulley systems?
U groove bearings are designed to keep motion controlled and centered along a path.

• Groove profile helps guide cables, rails, or belts accurately

• Shielded design keeps rolling surfaces cleaner over time

• Compact size works well in light duty and precision motion setups

Use this bearing when you need smooth tracking, compact size, and reliable rolling in small guided systems.