10 PCS 3D Printer GT2-20 Timing Pulley [8mm Bore]

Description: 
10 PCS 3D Printer GT2-20 Teeth Aluminum Timing Pulley [8mm 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 toothed pulley is made of a strong, durable, and lightweight material (aluminum) with an 8mm inner hole diameter can firmly mount on any 8mm shaft especially step motor shaft and also can be more fastened to the shaft with 2 screws. On the other hand, This pulley has a 2mm pitch, 7.4mm tooth width that is specialized for 6mm GT2 timing belt series, to achieve precision linear movement, but the XML timing belt slips because of different tooth arrange.

Features:
Pitch:2mm
Number of teeth: 20 teeth
Height: 16mm
Inner Diameter: 8mm
Material: Aluminium
Fixed mode: 2 x M4
Teeth width: 7.4mm

Package Include:
10 x GT2-20 Timing Pulley