12 Pcs Small V Groove Pulleys 4x13x6mm Miniature Carbon Steel Ball Bearing Pulleys Replacement For Rail Track Linear Motion System Sweet For CNC Machines And DIY Projects

12-Pack Tiny V Groove Pulleys for Precise Linear Motion
✔️ 12 pcs; 13mm wheel, 6mm width, 4mm bore, aluminium alloy

These small V groove pulleys run on standard rails to provide smooth linear motion, ideal for CNC machines, 3D printers, sliding doors, and DIY projects.

✅ Material: Aluminum alloy body for lightweight, durable use
✅ Wheel diameter: 13 mm; bore: 4 mm; groove width: 4 mm
✅ Width: 6 mm; packing: 12 pieces per pack
✅ Applications: rails, tracks, and lightweight automation

💡 What is a V groove pulley used for in linear motion applications?

These handy pulleys guide belts along rails with reduced friction and stable tracking.

- Useful in CNC machines for smooth belt tensioning
- Great for DIY automation and rail-guided sliding systems
- Helps achieve precise, repeatable motion in compact setups