The 20 Teeth 8mm M4 GT2 Pulley 2GT-20 is a high-precision timing belt pulley that is commonly used in 3D printers and other CNC machines. The pulley is designed to provide accurate and reliable motion control to ensure precise movement of the printer’s components.

The pulley has 20 teeth and a bore diameter of 8mm, which is compatible with most stepper motors and other motion control components. It features an M4 set screw hole for easy installation and is made of high-quality aluminum material that is lightweight and durable.

The 20 Teeth 8mm M4 GT2 Pulley 2GT-20 is typically used with a 2GT timing belt, which provides a high degree of accuracy and precision in motion control applications. The timing belt is looped around the pulley and driven by the stepper motor to provide precise movement of the printer’s components.

An all-aluminum timing belt pulley for GT2 belt (2 mm pitch) 6 mm wide (up to 6.35 mm wide). This pulley has 20 teeth and an 8 mm bore.  A small number of NEMA 23 motors have shafts of this diameter.  The pulley can also be used to belt-drive M8 treaded rod or T8 trapezoidal leadscrew. It has two M4 grub screws (at 90? to each other), which require a 1.5 mm hex key (Allen key).  The pulley is 17 mm long overall, has a 16 mm diameter hub, and a flange at the opposite end.  Unlike rubbish aluminum pulleys often found on eBay, which have a flat flange than can chafe the belt, this is a well-made pulley, with an embossed flange, slightly rounded on the side facing the belt, and the hub is also chamfered.