2GT Riemenscheibe Zahnriemenrad Drucker Kugellager Idler Pulley Breite 7mm 11mm

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2GT Riemenscheibe Zahnriemenrad Drucker Kugellager Idler Pulley Breite 7mm 11mm

HomeDIYer

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By HomeDIYer®

Nummer Zähne: 2GT-20Zähne

Bohrung Ø: 3mm

Breite & Betrag: 7mm & 1Stück

Price:

$4.61 USD

Stock:

In stock (500 units), ready to be shipped

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GT2 Timing Belt Pulley — Precise, Backlash-Free Motion for 3D Printers & CNC

Loose belts, slipping teeth, and drifting layers waste filament and time. If you build or maintain 3D printers, CNC machines, or small robotics rigs, an imprecise pulley shows up as ringing, missed steps, and dimensional errors — exactly the problems this GT2 timing belt pulley is designed to solve.

Each pulley uses the 2GT (GT2) profile with a 2mm tooth pitch, machined from aluminum alloy for a stable, low-wear running surface. Tooth counts run from 20T to 60T, bores from 3mm to 15mm (0.12"–0.59"), and belt widths of 7mm and 11mm — so you can match your existing 6mm or 9mm/10mm GT2 belt and motor shaft. Set screws are typically included to lock the pulley to the shaft; confirm your exact bore and width against your build before ordering.

Common uses include X/Y motion on Cartesian and CoreXY 3D printers, idler and drive positions on GT2 belt loops, and compact belt-driven axes on CNC routers and desktop robotics. It also works well as a GT2 idler pulley when paired with a matching bore bearing.

🔗 Compatible with GT2 (2mm pitch) timing belts in 6mm and 9mm/10mm widths. Choose the 7mm pulley for 6mm belts and the 11mm pulley for 9mm/10mm belts.

✅ Key Features of These GT2 Timing Belt Pulleys

⚙️ 2GT tooth profile, 2mm pitch: Meshes cleanly with standard GT2 belts for low-backlash, repeatable positioning.
🔩 Wide bore range (3–15mm): Fits common NEMA stepper shafts and idler bearings without adapters.
📐 Tooth counts 20T–60T: Tune your reduction ratio and belt path for the axis you're building.
🛡️ Aluminum-alloy body: Resists deformation and holds tooth geometry under sustained load.
↔️ 7mm and 11mm widths: Match 6mm or 9mm/10mm GT2 belts with clearance to spare.
🔧 Set-screw mounting: Locks securely to the motor or idler shaft; installation is straightforward with a hex key. Contact us to confirm included hardware for your variant.

📐 Technical Specifications — GT2 Timing Belt Pulley

Belt Profile	2GT / GT2, 2mm pitch
Tooth Count	20, 22, 24, 25, 26, 28, 30, 32, 34, 35, 36, 38, 40, 50, 60 (see variant options)
Bore Diameter	3–15mm (0.12"–0.59") — see variant options
Belt Width Fit	7mm pulley (for 6mm belt) / 11mm pulley (for 9–10mm belt)
Material	Aluminum alloy
Mounting	Set screw (hex key)
Compatible Machines	3D printers, CNC, robotics with GT2 belts
Package Contents	1 pulley per unit — see variant options

❓ Frequently Asked Questions

How do I choose the right number of teeth?

20T is the most common drive pulley for 3D printer X/Y axes. Larger tooth counts (30T–60T) increase the pitch diameter, which changes your reduction ratio and steps-per-mm. Match the tooth count your printer or CNC firmware expects, or recalibrate after changing it.

Which bore size should I pick?

Measure your motor or idler shaft diameter. NEMA 17 steppers typically use a 5mm shaft, so a 5mm bore is common. For idler positions, match the bore to your bearing's inner diameter. If unsure, contact us to confirm before ordering.

Is the pulley strong enough for continuous use?

The aluminum-alloy body holds its tooth geometry under sustained belt tension, which helps maintain positioning accuracy over long print or machining sessions. Keep belt tension within your machine's recommended range to avoid excess wear.

Will it resist corrosion in a workshop environment?

Aluminum alloy naturally forms a protective oxide layer and resists rust in typical indoor workshop conditions. For humid or outdoor environments, keep the assembly clean and dry to preserve smooth belt engagement.

Which belt width matches this pulley?

Choose the 7mm-wide pulley for a 6mm GT2 belt, and the 11mm-wide pulley for a 9mm or 10mm GT2 belt. The extra pulley width gives the belt clearance to track without rubbing the flanges.

Can I use this as an idler pulley?

Yes. Paired with a matching-bore bearing, it works as a toothed or smooth idler in a GT2 belt loop. Select the bore that fits your bearing's inner diameter and the width that matches your belt.

How do I install it on my machine?

Slide the pulley onto the shaft, align the teeth with the belt path, and tighten the set screw against the shaft flat with a hex key. Confirm the belt sits centered before tensioning.

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