3401 Series Set-Screw Round Belt Pulley (6mm Bore, 8mm PD)

This 6mm bore pulley fastens to a 6mm round or 6mm D-shaft via its M5 set-screw so that it can drive a round belt.

Round belts are excellent for low-torque applications. Since the belt stretches, close is good enough when it comes to calculating what belt length you need between two pulleys. This method of power transmission is also extremely quiet!