2GT 80T Zahnrad GT2 Riemenscheibe Zahnriemenrad Zahnriemen Pulley CNC 3D Drucker
2GT 80T Zahnrad GT2 Riemenscheibe Zahnriemenrad Zahnriemen Pulley CNC 3D Drucker
2GT 80T Zahnrad GT2 Riemenscheibe Zahnriemenrad Zahnriemen Pulley CNC 3D Drucker
2GT 80T Zahnrad GT2 Riemenscheibe Zahnriemenrad Zahnriemen Pulley CNC 3D Drucker
2GT 80T Zahnrad GT2 Riemenscheibe Zahnriemenrad Zahnriemen Pulley CNC 3D Drucker
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2GT 80T Zahnrad GT2 Riemenscheibe Zahnriemenrad Zahnriemen Pulley CNC 3D Drucker2GT 80T Zahnrad GT2 Riemenscheibe Zahnriemenrad Zahnriemen Pulley CNC 3D Drucker2GT 80T Zahnrad GT2 Riemenscheibe Zahnriemenrad Zahnriemen Pulley CNC 3D Drucker2GT 80T Zahnrad GT2 Riemenscheibe Zahnriemenrad Zahnriemen Pulley CNC 3D Drucker2GT 80T Zahnrad GT2 Riemenscheibe Zahnriemenrad Zahnriemen Pulley CNC 3D Drucker

2GT 80T Zahnrad GT2 Riemenscheibe Zahnriemenrad Zahnriemen Pulley CNC 3D Drucker

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Price:
$7.87 USD
Stock:
In stock (500 units), ready to be shipped

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Description

GT2 80T Timing Belt Pulley — Precise Motion Control for CNC & 3D Printing

When your CNC router skips steps or your 3D printer loses positional accuracy, the culprit is often a mismatched or worn timing pulley. Makers, engineers, and workshop builders who demand repeatable, low-backlash motion rely on a correctly specified GT2 pulley to keep every axis on track.

This GT2 80-tooth timing belt pulley features a 2mm pitch profile machined to mesh cleanly with standard GT2 belts. Available in silver (aluminum alloy) and black (anodized aluminum) finishes, with bore options of 5mm or 8mm and compatible belt widths of 6mm or 10mm. The pulley diameter is approximately 50–52mm (~2 in), with an overall hub length typically in the 20–26mm (~0.8–1.0 in) range depending on variant.

Typical applications include DIY CNC router X/Y/Z axes, FDM 3D printer extruder and motion systems, laser engraver gantry drives, and custom belt-driven automation rigs where an 80-tooth reduction ratio provides smooth, high-torque transmission.

✅ Compatible with: Standard GT2 2mm-pitch open or closed-loop timing belts — 6mm and 10mm width. Fits 5mm and 8mm motor shafts (NEMA 17 / NEMA 23 stepper motors). Suitable for RepRap, Voron, Ender, and custom CNC builds.

✅ Key Features of These GT2 80T Timing Belt Pulleys

⚙️
80-Tooth GT2 Profile

2mm pitch tooth geometry delivers smooth, low-noise belt engagement and accurate positional repeatability across long travel distances.

🔩
Dual Bore Options

Available in 5mm and 8mm bore diameters to fit the most common stepper motor shaft sizes used in CNC and 3D printing applications.

📏
6mm & 10mm Belt Width Support

Choose the belt width that matches your existing drive system — 6mm for compact builds, 10mm for higher-load or wider-belt configurations.

🎨
Silver & Black Finish

Natural aluminum (silver) and anodized black options available — the anodized finish adds a layer of surface hardness and corrosion resistance.

🏗️
Aluminum Alloy Construction

Lightweight yet rigid aluminum alloy body keeps rotational inertia low while maintaining dimensional stability under continuous operation.

🔧
Set Screw Retention

Includes set screw(s) for secure shaft mounting — no press-fit required, making installation and repositioning straightforward for DIY builds.

📐 Technical Specifications — GT2 Timing Belt Pulley

Belt Profile GT2 (2mm pitch)
Number of Teeth 80T
Pitch Diameter ~50.93mm (~2.01 in)
Bore Diameter See variant options
Compatible Belt Width See variant options
Hub Length See variant options
Material Aluminum alloy
Finish Natural (Silver) / Anodized (Black)
Mounting Set screw
Weight See variant options

❓ Frequently Asked Questions

Which bore size should I choose — 5mm or 8mm?

Match the bore to your motor shaft diameter. NEMA 17 stepper motors (the most common in 3D printers and small CNC machines) typically use a 5mm shaft. NEMA 23 motors and some larger NEMA 17 variants use an 8mm shaft. Check your motor's datasheet before ordering.

What belt width is compatible with this pulley?

This pulley is available in variants matched to either 6mm or 10mm wide GT2 belts. Select the variant that matches your existing belt width. Mixing belt and pulley widths (e.g., a 10mm belt on a 6mm-flanged pulley) can cause belt tracking issues and is not recommended.

Is this pulley compatible with standard GT2 open-loop and closed-loop belts?

Yes. The 2mm GT2 tooth profile is an industry-standard geometry. This pulley meshes with any GT2-profile timing belt of the matching width, whether open-ended (sold by the meter) or closed-loop (fixed-length loop belts).

How strong is the set screw connection? Will it slip under load?

For typical CNC and 3D printing loads, the set screw provides adequate retention when properly tightened against a flat on the motor shaft (if present) or directly onto the shaft. For high-torque or high-speed applications, ensure the set screw is torqued to spec and consider using a thread-locking compound for added security.

Does the anodized black finish affect dimensional accuracy?

Anodizing adds a very thin oxide layer (typically 10–25 microns) to the aluminum surface. This has negligible effect on bore or tooth dimensions for standard motion-control use. The anodized finish also improves surface hardness and provides mild corrosion resistance compared to bare aluminum.

Can I use this pulley in a Voron, Ender, or other popular 3D printer build?

This pulley is compatible with any build that uses GT2 2mm-pitch belts and a matching bore shaft. Voron designs, Ender-series printers, and most RepRap-derived machines use GT2 belts with 5mm shafts — select the 5mm bore variant and the belt width specified in your build's BOM.

How do I select the right variant for my build?

You need to match three parameters: (1) bore diameter to your motor shaft, (2) belt width to your existing or planned belt, and (3) finish (silver or black) to your preference. Use the variant selector above to choose Color, then Tooth Count (80T), then Bore & Belt Width combination.

🛒 Select your color, bore size, and belt width above, then add to cart.

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