GT2 Aluminium Timing Belt Pulley 16T Wide 6/10mm Bore 3mm To 6mm For 3D Printer
GT2 Aluminium Timing Belt Pulley 16T Wide 6/10mm Bore 3mm To 6mm For 3D Printer
GT2 Aluminium Timing Belt Pulley 16T Wide 6/10mm Bore 3mm To 6mm For 3D Printer
GT2 Aluminium Timing Belt Pulley 16T Wide 6/10mm Bore 3mm To 6mm For 3D Printer
GT2 Aluminium Timing Belt Pulley 16T Wide 6/10mm Bore 3mm To 6mm For 3D Printer
GT2 Aluminium Timing Belt Pulley 16T Wide 6/10mm Bore 3mm To 6mm For 3D Printer
GT2 Aluminium Timing Belt Pulley 16T Wide 6/10mm Bore 3mm To 6mm For 3D Printer
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GT2 Aluminium Timing Belt Pulley 16T Wide 6/10mm Bore 3mm To 6mm For 3D PrinterGT2 Aluminium Timing Belt Pulley 16T Wide 6/10mm Bore 3mm To 6mm For 3D PrinterGT2 Aluminium Timing Belt Pulley 16T Wide 6/10mm Bore 3mm To 6mm For 3D PrinterGT2 Aluminium Timing Belt Pulley 16T Wide 6/10mm Bore 3mm To 6mm For 3D PrinterGT2 Aluminium Timing Belt Pulley 16T Wide 6/10mm Bore 3mm To 6mm For 3D PrinterGT2 Aluminium Timing Belt Pulley 16T Wide 6/10mm Bore 3mm To 6mm For 3D PrinterGT2 Aluminium Timing Belt Pulley 16T Wide 6/10mm Bore 3mm To 6mm For 3D Printer

GT2 Aluminium Timing Belt Pulley 16T Wide 6/10mm Bore 3mm To 6mm For 3D Printer

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Price:
$2.43 USD
Stock:
In stock (500 units), ready to be shipped

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Description

GT2 16-Tooth Aluminium Timing Belt Pulley — Reliable 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, engineers, and workshop builders who demand repeatable, slip-free motion need a pulley that holds tight tolerances across thousands of print hours. This GT2 16-tooth aluminium timing belt pulley is engineered for exactly that use case.

Each pulley is machined from 6061 aluminium alloy, giving it a lightweight yet rigid body that resists deformation under continuous belt tension. The GT2 tooth profile (2 mm pitch) meshes cleanly with standard GT2 open-loop and closed-loop belts. Available in two belt widths — 6 mm (~0.24 in) and 10 mm (~0.39 in) — and six bore sizes ranging from 3 mm to 6.35 mm (~0.118 in to 0.250 in), this pulley covers the most common shaft diameters used in desktop motion systems.

Typical applications include Cartesian and CoreXY 3D printer X/Y axis drives, laser engraver gantry systems, small CNC router belt-drive axes, and DIY robotic arm joint drives. Whether you are replacing a stripped pulley on a Creality Ender or building a custom GT2 belt-driven linear actuator, this 16T pulley delivers the consistent tooth engagement needed for accurate positioning.

⚙️ Compatible with: GT2 2mm-pitch open-loop and closed-loop timing belts, 6 mm and 10 mm belt widths. Fits standard 5 mm stepper motor shafts (with 5 mm bore variant) and common shaft sizes 3 mm, 3.175 mm (1/8 in), 4 mm, 5 mm, 6 mm, and 6.35 mm (1/4 in).

✅ Key Features of These GT2 16T Aluminium Timing Belt Pulleys

🔩 Machined 6061 Aluminium Body

Lightweight alloy construction keeps rotating mass low, reducing stepper motor load and improving acceleration response in fast-moving print heads and gantries.

📐 GT2 2 mm Pitch, 16 Teeth

The 16-tooth GT2 profile is the industry standard for desktop 3D printer motion systems, providing a balance of torque transmission and compact pulley diameter (~10.2 mm pitch diameter).

📏 Dual Belt Width Options — 6 mm & 10 mm

Choose the belt width that matches your existing drivetrain. The 10 mm wide variant offers greater belt contact area for higher-load or wider-belt CNC applications.

🎯 Six Bore Sizes for Versatile Shaft Compatibility

Available in 3 mm, 3.175 mm, 4 mm, 5 mm, 6 mm, and 6.35 mm bores to match NEMA 17 stepper shafts, servo shafts, and custom drive shafts without adapters.

🔧 Set Screw Retention

Each pulley includes a set screw (typically M3) for secure shaft locking, preventing rotational slip during direction reversals and rapid acceleration cycles.

🔄 Drop-In Replacement for Common 3D Printer Platforms

Dimensionally compatible with GT2 pulleys used on widely adopted Cartesian and CoreXY printer frames, making it a straightforward swap for maintenance or upgrades.

📐 Technical Specifications — GT2 Timing Belt Pulley

Belt Profile GT2 (2 mm pitch)
Number of Teeth 16T
Pitch Diameter ~10.19 mm (0.401 in)
Outside Diameter ~12 mm (0.47 in)
Belt Width Compatibility 6 mm or 10 mm (see variant options)
Bore Size 3 mm / 3.175 mm / 4 mm / 5 mm / 6 mm / 6.35 mm (see variant options)
Material 6061 Aluminium Alloy
Finish Natural anodised / silver
Set Screw Included (typically M3)
Flange See variant options
Weight (per piece) See variant options
Application 3D printers, CNC routers, laser engravers, robotic drives

❓ Frequently Asked Questions

Which bore size should I choose for a NEMA 17 stepper motor?

Standard NEMA 17 stepper motors have a 5 mm output shaft diameter. Select the 5 mm bore variant for a direct fit. If your motor has a D-cut shaft, the set screw will lock against the flat for a secure, slip-free connection.

What is the difference between the 6 mm and 10 mm belt width variants?

The belt width must match your existing GT2 belt. Most desktop 3D printers (Ender, Prusa-style, Voron, etc.) use 6 mm wide GT2 belts. The 10 mm wide variant is suited for heavier-duty CNC or laser engraver builds where a wider belt is used to handle greater lateral loads and reduce belt stretch.

Is this pulley compatible with GT2 closed-loop (loop) belts as well as open-loop belts?

Yes. The GT2 2 mm pitch tooth profile is identical for both open-loop and closed-loop GT2 belts. This pulley will mesh correctly with either type, provided the belt width matches your selected variant (6 mm or 10 mm).

How strong is the aluminium pulley compared to a plastic one?

6061 aluminium alloy offers significantly higher tensile strength and dimensional stability than injection-moulded plastic pulleys. Aluminium pulleys resist deformation under sustained belt tension, maintain tooth geometry over time, and dissipate heat more effectively — making them the preferred choice for high-cycle or high-speed motion systems.

Will this pulley corrode or oxidise over time?

6061 aluminium naturally forms a thin oxide layer that protects against further corrosion in typical indoor workshop and printer enclosure environments. For humid or mildly corrosive environments, the anodised finish provides additional surface protection. This pulley is not rated for outdoor or marine exposure.

Can I use this pulley on a 3.175 mm (1/8 inch) shaft?

Yes. The 3.175 mm bore variant is specifically sized for 1/8-inch shafts, which are common in some servo motors and custom drive assemblies. This is a direct fit — no bushing or adapter is required.

Does the set screw come pre-installed, and what tool do I need?

The set screw is typically included with the pulley. It is an M3 hex socket set screw, so you will need a 1.5 mm or 2 mm hex key (Allen wrench) to tighten it. Torque the set screw firmly against the shaft flat or surface to prevent slipping during operation.

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

 

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