The GT2 Timing 20 Teeth Aluminum Pulley Wheel is a 16mm outer diameter, 16mm height aluminum pulley with a 5mm bore hole and 20 teeth, weighing 25 grams, designed for 3D printer, CNC, and linear motion systems using GT2 timing belt. This gt2 timing belt driven pulley’s 20-tooth count combined with GT2’s 2mm tooth pitch gives exactly 40mm of belt travel per full revolution — a critical figure for 3D printer firmware calibration, as steps-per-mm is calculated by dividing stepper motor steps per revolution by this 40mm distance.
The gt2 timing belt 6mm width is directly compatible with this pulley’s 16mm height — the belt runs within the pulley’s flanged edges which keep the gt2 6mm open timing belt aligned and prevent it from sliding off during high-speed axis movements. This aluminum pulley’s 5mm bore hole matches the standard output shaft diameter of NEMA 17 stepper motors used in virtually all desktop 3D printers and hobbyist CNC machines, making it a direct drop-in for these systems without adapter sleeves.
this gt2 open timing belt pulley requires a set screw (typically included or separately sourced) to lock onto the motor shaft — without properly tightening the set screw against the shaft’s flat, the pulley can slip during rapid direction changes causing print layer shifts. Available from StemVolt, this unit is suitable for engineers working on 3D printer calibration and practical precision linear motion electronics projects.
Related Product:
- Checkout GT2 6mm Open Timing Belt
Features:
- 6mm bore fits NEMA 17 stepper motor shaft directly
- Aluminum construction resists deformation under belt tension
- Flanged edges keep GT2 6mm belt aligned during operation
- 16mm height matches standard GT2 6mm belt width compatibility
Technical Specifications:
Applications:
- GT2 Pulley used for 3D printer X/Y axis NEMA 17 stepper drive
- College project uses gt2 timing belt pulley for steps-per-mm demo
- CNC router uses gt2 timing belt 6mm pulley for India gantry drive
- Laser cutter uses gt2 6mm open timing belt with this pulley for axis
- DIY plotter uses gt2 aluminum pulley for pen carriage drive system
Package Includes:
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1 x GT2 Timing 20Teeth Aluminum Pulley Wheel
Anirban Dasgupta –
Pan India delivery available
Ramachandran Swaminathan –
This GT2 20 teeth alluminum pulley wheel worked perfectly in my 3D printer setup. The machining quality was precise, installation was easy, and the pulley delivered smooth and accurate belt movement.
Amandeep Singh Gill –
Trusted store experience
Ronak Khandelwal –
Well sealed box packaging
Tathagata Mukherjee –
No complaints with the quality
Jaivardhan Singh –
COD option available
Venkatasubramanian Ramachandran –
Purchased for an ATL lab project and the product exceeded expectations. The aluminum construction feels durable, the fitment was accurate, and the support team was helpful throughout the purchase process.