GT2 Timing Belt & Pulley Kit – 5M Belt + 5pcs Pulleys

$54.37 $73.58

Mellow GT2 Timing Belt & Pulley Kit for 3D Printers

Upgrade your 3D printer's motion system with this precision-engineered GT2 Timing Belt and Pulley Kit by Mellow. Designed for makers and enthusiasts who demand accuracy, this kit combines a 5-meter open GT2 belt with five aluminum alloy timing pulleys to reduce belt jitter and deliver smoother, more consistent print results.

The pulleys are manufactured using specialized tooling for a surface finish of Ra0.4μm — far smoother than generic alternatives — ensuring perfect 100% gear matching with the GT2 belt and eliminating the micro-errors that can degrade print quality over time. Made in Mainland China.

What's in the Kit?

1× 2GT Open Timing Belt – 5 metres, 6mm wide
5× GT2 Aluminum Alloy Timing Pulleys – 16/20 teeth, 5mm bore, double flange, each with 2 setscrews
10× Setscrews
1× Allen Key

Belt Specifications

Type: 2GT / GT2
Pitch: 2mm
Width: 6mm
Belt Height: 1.38mm
Tooth Height: 0.75mm
Length: 5 metres (open/continuous)

Pulley Specifications

Teeth: 16 or 20 teeth
Pitch: 2mm
Flange: Double
Material: Aluminium Alloy
Bore: 5mm
Compatible Belt Width: 6mm

Why Choose This Kit?

✅ High-precision machining – Ra0.4μm surface finish for ultra-smooth belt engagement
✅ 100% gear-matched – pulleys pair perfectly with GT2 belt geometry
✅ Reduces belt jitter – tighter tolerances mean sharper, more accurate prints
✅ Aluminium alloy pulleys – lightweight yet durable for sustained use
✅ No assembly required – setscrews and Allen key included, ready to install
✅ Versatile – suits most FDM 3D printers using GT2/2GT motion systems

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Frequently Asked Questions

Q: Are these GT2 timing pulleys compatible with standard FDM 3D printers like the Ender 3 or Prusa?

A: Yes. These GT2 timing pulleys feature a 5mm bore and 2mm pitch, which is the standard specification used by most popular FDM 3D printers including Ender 3, Prusa, and many others that use GT2/2GT motion systems with 6mm wide belts.

Q: What is the difference between 16-tooth and 20-tooth pulleys, and which should I use?

A: The tooth count affects how much linear distance the belt travels per motor step. A 16-tooth pulley gives finer resolution per step, while a 20-tooth pulley moves slightly more belt per rotation, allowing for faster travel speeds. The right choice depends on your printer's design — consult your printer's documentation to confirm which tooth count it calls for.

Q: Is the 5M GT2 belt sufficient for a standard printer build or upgrade?

A: For most standard-size FDM 3D printer builds (e.g. Cartesian or CoreXY designs up to 300×300mm), 5 metres of GT2 belt is ample to cover both the X and Y axes with belt to spare for tension adjustments or future replacements.

Q: Does the kit come ready to install, or is additional hardware needed?

A: The kit is supplied with everything needed for installation — the 5 aluminium pulleys, setscrews (2 per pulley), and an Allen key. No extra hardware is required, though you will need your own tools to mount the pulleys onto your printer's stepper motor shafts.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.