40mm Outer Diameter Single Groove Pulley With 7mm Fixed Bore For Drilling Machines, 6mm PU Round Belt Compatible, Smooth Running, High Concentricity, Non Slip Durable Pulley For Precise Home Shop Drilling Projects

40mm OD single groove pulley with 7mm bore, 1× Pulley
✔️ 40mm OD, 7mm bore, 17.5mm thick, fits 6mm round belts

This single groove pulley is designed for motor and drill setups, enabling smooth belt-driven motion on compact machines. It’s commonly used in home shop drilling projects that use 6mm belts for precise, low-wobble transmission.

✅ Outer diameter 40mm
✅ Inner bore 7mm; overall thickness 17.5mm; groove width 7mm
✅ Groove depth about 5mm; groove bottom diameter 30mm; belt compatibility 6mm
✅ Suitable for motor, mini spindle, and model transmission applications

💡 What is a 40mm belt pulley used for in small drilling machines and how to choose the right bore?

It's handy for compact belt-drive setups, delivering smooth, accurate rotation.

- 40mm pulley with 7mm bore for 6mm belts
- fits motors, mini spindles, and model transmissions
- high concentricity reduces belt slip for precise work✝️