12.0mm Aluminum Alloy U-Groove U-Concave Driver Pulley Wheel -1 piece

CNC-machined aluminum timing pulley or driver pulley, designed for mechanical power transmission in applications like belt drives or automation systems. Dimensions & Features: Total Diameter: 40 mm Overall Height: 23 mm Pulley Width: 28 mm (grooved section) Shaft Hole Diameter: 8.0 mm – suitable for an 8mm motor or shaft Groove Section Detail (from left to right): 2 mm flange 12 mm belt groove area 2 mm central web 7 mm shaft clamping hub Set Screws: The hub has two M4 threaded holes for securing the pulley to the shaft using grub/set screws. Material:  Aluminum Use Case: This pulley is typically used in conjunction with a timing belt for precision rotary motion in CNC machines, 3D printers, or robotic assemblies.