GT2 Toothless Idler Pulley 20 Groove 5mm Bore for 10mm Belt
✔️ Aluminum Timing Belt Guide Pulley 5 Pack

This GT2 idler pulley is used to guide and tension timing belts in compact motion systems like 3D printers and small CNC machines where smooth belt travel and steady alignment are important. Pack size is 5 pulleys.

✅ Pulley type: GT2 toothless idler
✅ Groove count: 20
✅ Bore size: 5 mm
✅ Belt width fit: 10 mm
✅ Material: aluminum with oxidized surface finish
✅ Helps guide and tension belts without engaging teeth
✅ Reduces belt wear during continuous motion
✅ Lightweight design for small mechanical systems
✅ Used in 3D printers and light CNC builds
✅ Quantity: 5 pulleys per pack

💡 Why use a toothless GT2 idler pulley for timing belt tensioning in small machines?
It is chosen to guide the belt smoothly while keeping alignment steady without driving the belt.

• Smooth outer groove profile reduces friction and belt edge wear

• Aluminum body supports stable rotation with low added weight

• Toothless design avoids tooth meshing stress on tension points

• Consistent belt path improves accuracy in motion control systems

This pulley set is a handy choice for keeping timing belts aligned and running smooth in precision printer and CNC setups.