2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm
2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm
2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm
2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm
2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm
2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm
2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm
2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm
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2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm

2GT 6mm Timing Belt Smooth Tooth Drive Pulley 20T 22T 24T~28T Bore=3mm~12.7mm

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Price:
$12.09 USD
Stock:
In stock (500 units), ready to be shipped

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Description

2GT 6mm Timing Belt Pulley — Precise Drive Control for CNC, 3D Printers & Robotics

When your DIY automation project demands slip-free, repeatable motion, a mismatched or worn pulley becomes the weakest link in the entire drive train. Makers, engineers, and small-workshop builders who rely on stepper motors and servo drives need a pulley that holds tight tolerances without adding unnecessary weight or bulk. These 2GT 6mm timing belt pulleys are engineered to deliver exactly that — consistent tooth engagement and reliable bore fit across a wide range of shaft sizes.

Each pulley is machined from aluminum alloy with a smooth-tooth 2GT profile designed for 6mm-wide timing belts. Tooth counts range from 20T to 28T, and bore diameters span 3mm to 12.7mm (approximately 0.12 in to 0.50 in), covering the most common stepper and servo motor shaft sizes. Select variants include a 3mm keyway for positive torque transmission without set-screw slippage.

Typical use cases include open-loop CNC router X/Y axes, 3D printer extruder and motion systems requiring 2GT belt compatibility, lightweight robotic arm joints and conveyor drives, and educational lab automation rigs where repeatable positioning is critical.

⚙️ Belt Compatibility: Designed for 2GT (GT2) profile timing belts, 6mm width. Verify your belt pitch and width before ordering.

✅ Key Features of These 2GT Timing Belt Pulleys

🦷 Wide Tooth Count Range

Available in 20T, 22T, 24T, 25T, 26T, and 28T configurations to match your drive ratio requirements without custom machining.

🔩 Multiple Bore Sizes

Bore options from 3mm to 12.7mm (0.12–0.50 in) accommodate the most common stepper motor, servo, and DC motor shaft diameters.

🔑 Optional 3mm Keyway

Select variants include a precision-cut 3mm keyway for positive torque locking — ideal for high-cycle or higher-load applications where set screws alone may loosen.

⚖️ Lightweight Aluminum Alloy Construction

Machined aluminum keeps rotating mass low, reducing inertia and improving dynamic response in motion-control systems.

📐 2GT / GT2 Profile Tooth Form

Smooth-tooth 2GT profile ensures quiet, low-backlash engagement with standard GT2 6mm timing belts used across CNC and 3D printing platforms.

📦 Flexible Pack Quantities

Order as a single piece, a pair (×2), or a pack of five (×5) to match your project scale and reduce per-unit cost on larger builds.

📐 Technical Specifications — 2GT Timing Belt Pulley

Belt Profile 2GT (GT2)
Belt Width 6 mm
Tooth Count Options 20T, 22T, 24T, 25T, 26T, 28T
Bore Diameter Range 3 mm – 12.7 mm (0.12 in – 0.50 in)
Keyway Option Without keyway / 3 mm keyway (see variant options)
Material Aluminum alloy
Flange See variant options
Outer Diameter See variant options
Hub Length See variant options
Pack Quantity 1 pc / 2 pcs / 5 pcs (see variant options)
Finish Natural anodized / machined aluminum
Set Screw See variant options

❓ Frequently Asked Questions

Which tooth count should I choose for my 3D printer or CNC router?

The most common choice for 3D printers (CoreXY, Cartesian) is 20T, which pairs well with standard 2GT belt loops and typical stepper motor speeds. For CNC routers where you want a slightly higher mechanical advantage or slower linear speed per motor revolution, 24T–28T may be preferable. Match your tooth count to your existing belt loop length and desired steps-per-mm calculation.

How do I measure my motor shaft to select the correct bore size?

Use a digital caliper to measure the shaft diameter at the point where the pulley will seat. Common stepper motor shafts are 5mm (NEMA 17), 6.35mm (1/4 in, common on NEMA 23), and 8mm (larger NEMA 23/34). Select the bore that matches your shaft diameter exactly — a loose bore will cause runout and positioning errors.

Do I need the keyway version, or will a set screw hold adequately?

For light-duty 3D printing and low-torque CNC applications, a set screw (grub screw) against a flat on the motor shaft is typically sufficient. If your application involves higher torque, frequent direction reversals, or continuous high-cycle operation (such as a conveyor or robotic joint), the 3mm keyway variant provides a more secure mechanical lock and reduces the risk of the pulley rotating on the shaft over time.

Are these pulleys compatible with GT2 belts from other brands?

Yes. The 2GT tooth profile is an open standard and is dimensionally identical to what is commonly marketed as "GT2." These pulleys are compatible with any 6mm-wide 2GT/GT2 timing belt regardless of brand, as long as the belt pitch is 2mm.

What is the corrosion resistance of aluminum alloy pulleys?

Aluminum alloy offers good natural oxidation resistance for indoor and dry-environment use. For applications exposed to moisture, cutting fluids, or outdoor conditions, consider applying a light coat of machine oil or selecting a hard-anodized variant if available. Aluminum is not recommended for prolonged exposure to saltwater or strong alkaline environments without additional protection.

Can I use these pulleys for belt-driven linear motion (e.g., lead screw replacement)?

Yes. 2GT pulleys paired with a closed-loop or open-ended 6mm GT2 belt are a common and effective approach for linear motion on CNC machines, laser cutters, and 3D printers. Ensure the idler pulley on the opposite end is also a 2GT-compatible smooth or toothed idler, and tension the belt to the manufacturer's recommended deflection specification for your span length.

How do I choose between ordering 1, 2, or 5 pieces?

Order 1 piece for a single-axis replacement or prototype. Order 2 pieces for a dual-axis system (e.g., CoreXY X and Y motors) or to keep a spare on hand. Order 5 pieces for multi-axis machines, batch builds, or workshop stock where having extras reduces downtime if a pulley is damaged during assembly.

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

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