GT2 Zahnrad Antrieb Riemenscheibe Zahnriemenrad für 3D Drucker Kugellager Pulley
GT2 Zahnrad Antrieb Riemenscheibe Zahnriemenrad für 3D Drucker Kugellager Pulley
GT2 Zahnrad Antrieb Riemenscheibe Zahnriemenrad für 3D Drucker Kugellager Pulley
GT2 Zahnrad Antrieb Riemenscheibe Zahnriemenrad für 3D Drucker Kugellager Pulley
GT2 Zahnrad Antrieb Riemenscheibe Zahnriemenrad für 3D Drucker Kugellager Pulley
GT2 Zahnrad Antrieb Riemenscheibe Zahnriemenrad für 3D Drucker Kugellager Pulley
GT2 Zahnrad Antrieb Riemenscheibe Zahnriemenrad für 3D Drucker Kugellager Pulley
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GT2 Zahnrad Antrieb Riemenscheibe Zahnriemenrad für 3D Drucker Kugellager PulleyGT2 Zahnrad Antrieb Riemenscheibe Zahnriemenrad für 3D Drucker Kugellager PulleyGT2 Zahnrad Antrieb Riemenscheibe Zahnriemenrad für 3D Drucker Kugellager PulleyGT2 Zahnrad Antrieb Riemenscheibe Zahnriemenrad für 3D Drucker Kugellager PulleyGT2 Zahnrad Antrieb Riemenscheibe Zahnriemenrad für 3D Drucker Kugellager PulleyGT2 Zahnrad Antrieb Riemenscheibe Zahnriemenrad für 3D Drucker Kugellager PulleyGT2 Zahnrad Antrieb Riemenscheibe Zahnriemenrad für 3D Drucker Kugellager Pulley

GT2 Zahnrad Antrieb Riemenscheibe Zahnriemenrad für 3D Drucker Kugellager Pulley

HomeDIYer
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By HomeDIYer®

Price:
$2.24 USD
Stock:
In stock (500 units), ready to be shipped

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Description

GT2 Timing Pulley Drive Sprocket — Precision Motion Control for 3D Printers & CNC Builds

When your 3D printer or CNC router loses positional accuracy, the culprit is often a worn or mismatched timing pulley. Makers, hobbyists, and workshop engineers who demand repeatable, backlash-free motion need a GT2 drive sprocket they can rely on across hundreds of print hours. These GT2 20-tooth pulleys are engineered for the motion-control demands of desktop 3D printers, laser cutters, and lightweight CNC machines.

Each pulley is machined from aluminum alloy with an anodized finish, available in 20-tooth GT2 profile. Belt width options cover 6 mm (~0.24 in) and 10 mm (~0.39 in), with bore (inner hole) sizes ranging from 3 mm to 6 mm (~0.12–0.24 in) to suit common motor shaft diameters. Idler variants are offered in smooth-bore (Glatt) and toothed (Gezahnt) configurations, with integrated flanged bearings for low-friction belt guidance.

Typical use cases include Cartesian and CoreXY 3D printer axis drives, belt-driven laser engraver gantries, and lightweight CNC router feed systems where a GT2 20T drive pulley with bearing idler keeps belt tension consistent and layer lines sharp.

⚙️ Compatible with standard GT2 2 mm pitch timing belts in 6 mm and 10 mm widths. Fits motor shafts from 3 mm to 6 mm diameter. Suitable for Ender 3, Prusa, Voron, and most open-frame 3D printer platforms.

✅ Key Features of These GT2 Timing Pulleys

🦷20-Tooth GT2 Profile

Standard 2 mm pitch GT2 tooth geometry ensures positive belt engagement and minimal backlash on X/Y motion axes.

🔩Dual Idler Types

Choose smooth-bore (Glatt) idlers for belt redirection or toothed (Gezahnt) idlers for driven pulley applications — both available in the same listing.

📐Multiple Belt & Bore Sizes

6 mm and 10 mm belt width variants with bore options from 3 mm to 6 mm cover the most common 3D printer and CNC motor shaft configurations.

🏗️Aluminum Alloy Construction

Lightweight yet rigid aluminum body with anodized surface treatment resists wear and corrosion across extended duty cycles.

🎯Integrated Flanged Bearing

Pre-installed flanged bearing on idler variants reduces friction and keeps the belt tracking true without additional hardware.

🔄Drop-In Replacement Fit

Dimensionally matched to OEM GT2 pulleys used in popular open-source printer designs — swap in without frame modifications.

📐 Technical Specifications — GT2 Timing Pulley

Tooth Profile GT2 (2 mm pitch)
Number of Teeth 20T
Belt Width 6 mm or 10 mm (see variant options)
Bore (Inner Hole) 3 mm, 4 mm, 5 mm, or 6 mm (see variant options)
Idler Type Smooth (Glatt) or Toothed (Gezahnt) (see variant options)
Material Aluminum alloy, anodized
Bearing Flanged ball bearing (idler variants)
Outer Diameter See variant options
Hub Width See variant options
Finish Anodized (silver/black)

❓ Frequently Asked Questions

How do I choose between the 6 mm and 10 mm belt width variants?

Match the belt width to your existing timing belt. Most compact desktop 3D printers (Ender 3, Prusa i3 style) use 6 mm GT2 belts, while larger-format or higher-torque builds often use 10 mm belts. Check your printer's specification or measure your current belt width before ordering.

What is the difference between the smooth (Glatt) and toothed (Gezahnt) idler types?

Smooth idlers redirect the belt path without engaging the teeth — ideal for tensioner positions. Toothed idlers mesh with the belt and are used as driven pulleys or where positive engagement is needed at a redirection point. Select based on your printer's belt routing design.

Which bore size should I select for my stepper motor shaft?

Most NEMA 17 stepper motors used in 3D printers have a 5 mm shaft diameter. If your motor has a 5 mm shaft, choose the 5 mm bore variant. For other motor types or custom builds, measure the shaft diameter with calipers before selecting. Available bores are 3 mm, 4 mm, 5 mm, and 6 mm.

Are these pulleys compatible with open-belt CoreXY and Cartesian printer designs?

Yes. The 20-tooth GT2 profile is the standard used in CoreXY designs (Voron, RatRig, etc.) and Cartesian printers (Ender, Prusa). Verify your belt width and bore requirements against your printer's BOM or documentation before purchasing.

How corrosion-resistant are these pulleys for long-term use?

The aluminum alloy body with anodized finish provides good resistance to oxidation and light moisture exposure typical of indoor workshop environments. They are not rated for outdoor or high-humidity industrial use. For best longevity, keep the bearing idlers lightly lubricated and free of debris.

Can I use these pulleys to replace OEM parts on my printer without modifications?

These pulleys are dimensionally matched to standard GT2 20T specifications used across most open-source printer platforms. In most cases they are direct drop-in replacements. However, always verify the bore size, belt width, and hub length against your specific printer model's requirements before installation.

What quantity is included per order?

Each order is for one (1) pulley unit. If you need multiple pulleys for a full printer build (typically 2–4 per machine), please adjust the quantity at checkout accordingly.

🛒 Select your model, idler type, and belt width & bore size above, then add to cart.

 

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