GT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive Belts
GT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive Belts
GT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive Belts
GT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive Belts
GT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive Belts
GT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive Belts
GT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive Belts
GT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive Belts
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GT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive BeltsGT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive BeltsGT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive BeltsGT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive BeltsGT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive BeltsGT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive BeltsGT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive BeltsGT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive Belts

GT2 Timing Belt Pulley 16-20 Tooth Synchronous Wheel for 6mm Width Drive Belts

HomeDIYer
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Price:
$6.79 USD
Stock:
In stock (500 units), ready to be shipped

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Description

GT2 Timing Belt Pulley — Reliable Synchronous Drive for 6mm Belts

When your 3D printer skips steps, your CNC router loses position, or your DIY automation project demands repeatable motion, the weak link is almost always the drive pulley. These GT2 timing belt pulleys are engineered for makers, hobbyists, and small-workshop builders who need consistent, slip-free power transmission without overengineering their budget.

Each pulley is machined to GT2 tooth profile standards and fits 6mm wide GT2 timing belts. Available in 16-tooth and 20-tooth configurations, with bore sizes of 5mm (~0.197 in) or 8mm (~0.315 in). Three material options are offered: aluminum alloy (standard and upgraded versions with set-screw retention) and iron material for higher-load applications. Outer diameter ranges typically from 10–14mm (~0.39–0.55 in) depending on tooth count.

Typical use cases include GT2 belt-driven 3D printer X/Y axes, CNC router stepper motor drives, robotic arm joint actuators, and custom linear motion systems requiring precise synchronous timing.

⚙️ Compatibility: Designed for standard GT2 timing belts, 6mm width. Bore sizes 5mm and 8mm fit common NEMA 17 and NEMA 23 stepper motor shafts. Verify your shaft diameter and belt width before ordering.

✅ Key Features of These GT2 Timing Belt Pulleys

🦷 16 & 20 Tooth Options

Choose 16T for higher torque and slower linear speed, or 20T for faster travel — both machined to GT2 tooth profile for zero-slip synchronous drive.

🔩 Multiple Bore Sizes

Available in 5mm and 8mm bore diameters to fit the most common stepper motor shaft sizes used in 3D printers, CNC machines, and robotics platforms.

🏗️ Three Material Variants

Aluminum Standard Edition for lightweight builds, Aluminum Upgraded Version with enhanced set-screw grip, and Iron Material for applications requiring greater load capacity.

📐 GT2 Profile Precision

Tooth geometry conforms to GT2 belt standards, ensuring smooth meshing, reduced backlash, and consistent step accuracy across your motion system.

📦 Flexible Pack Quantities

Order as a single unit for prototyping or in 5-packs and 10-packs for production builds and spare-parts inventory — all at a consistent per-unit spec.

🔄 6mm Belt Width Compatibility

Precisely sized for standard 6mm GT2 open-loop and closed-loop timing belts, the most widely used belt width in desktop CNC and 3D printing applications.

📐 Technical Specifications — GT2 Timing Belt Pulley

Tooth Profile GT2
Tooth Count 16T / 20T (see variant options)
Belt Width 6 mm
Bore Diameter 5 mm / 8 mm (see variant options)
Material Aluminum Alloy / Iron (see variant options)
Outer Diameter See variant options
Hub / Flange Flanged (belt retention)
Set Screw Included (upgraded version: dual set screw)
Pack Quantity 1 PCS / 5 PCS / 10 PCS (see variant options)
Weight (per unit) See variant options

❓ Frequently Asked Questions

Which tooth count should I choose — 16T or 20T?

Choose 16T if you need more torque and can accept slower linear belt speed — common in heavier gantry or high-force applications. Choose 20T for faster travel speeds with the same motor RPM, which is the standard choice for most desktop 3D printer X/Y axes. Both use the same GT2 belt profile and 6mm belt width.

What is the difference between the Standard Edition and Upgraded Version?

Both are aluminum alloy pulleys. The Upgraded Version features an enhanced set-screw configuration (typically dual set screws or a larger grub screw) for a more secure shaft grip, reducing the risk of slippage under higher acceleration or load. The Standard Edition is suitable for typical 3D printing and light CNC use.

When should I choose the Iron Material variant?

The Iron Material variant is heavier than aluminum but offers greater strength and wear resistance under sustained high-load or high-torque conditions. It is a good choice for industrial-style CNC routers, heavier robotic joints, or any application where the pulley is subject to significant radial or axial forces.

Will these pulleys fit my NEMA 17 stepper motor?

NEMA 17 stepper motors typically have a 5mm output shaft. Select the 5mm bore variant for a direct fit. If your motor has a 8mm shaft (common on some NEMA 23 motors), select the 8mm bore variant. Always verify your motor's shaft diameter in its datasheet before ordering.

Are these pulleys compatible with closed-loop GT2 belts?

Yes. These pulleys are compatible with both open-ended GT2 timing belts and closed-loop GT2 belts, provided the belt width is 6mm. The GT2 tooth profile is standardized, so any GT2-profile belt of 6mm width will mesh correctly with these pulleys.

How do I secure the pulley to the motor shaft?

Each pulley includes a set screw (grub screw) that tightens against the motor shaft to lock the pulley in place. For the Upgraded Version, the enhanced set-screw design provides additional holding force. Use a hex key (Allen key) of the appropriate size to tighten. Ensure the set screw aligns with the flat of the motor shaft if one is present, for maximum grip.

Can I use these pulleys for a CoreXY or H-bot 3D printer build?

Yes. GT2 6mm pulleys are the standard component for CoreXY, H-bot, and Cartesian 3D printer motion systems. The 20T variant is the most commonly specified tooth count for these architectures. Order the 5mm bore to match standard NEMA 17 motor shafts used in these builds.

🛒 Select your Tooth count, Bore size, and Pack quantity above, then add to cart.

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