10 PCS 3D Printer GT2-20 Timing Pulley [5mm Bore]

Description:
10 PCS 3D Printer GT2 20 Teeth Aluminum Timing Pulley [5mm Bore] package contains 10 pieces of synchronous toothed pulley that are used in linear movement belt mechanism of the 3D printer.  Most of the 3D printer needs a linear motion, but motors offer rotational motion, so a mechanism is needed to convert the rotational motion to the linear motion. Most 3D printers use a mechanism consist of leadscrews and timing belts. In the printing process, the leadscrew moves the hot end to upward or haet bed to downward to create a linear movement along Z-axis. Belts translate the rotational motion of the motor to linear motion in X and Y-axis. A belt mechanism consists of a coach fixed to the belt, a toothed pulley (sprocket) connected to the step motor, and a timing belt with teeth. The belt teeth fit into the notches of the toothed pulley, preventing it from slipping, and allowing it rotates with the motor, so keeping the belt taut is a very important factor in timing. 
This tooth pulley is made of a strong, durable, and lightweight material (aluminum) with a 5mm inner hole diameter can mount on any 5mm shaft especially step motor shaft and also can be more fastened to the shaft with two M4 screws. On the other hand, This pulley has a 2mm pitch, 7mm tooth width that is specialized for 6mm GT2 timing belt series with 20 teeth, to achieve precision linear movement.

Features:
Number of teeth: 20 teeth
Teeth width: 7mm
Inner Bore: 5mm
Pitch: 2 mm
Height: 16mm
Fixed mode: 2 x M4
Material: Aluminum

Package Include:
10 x GT2-20 Timing Pulley