2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer
2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer
2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer
2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer
2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer
2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer
2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer
2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer
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2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer

2GT 20T-80T Timing Belt Pulley Pitch 2mm AF-type Teeth Width 7mm For 3D Printer

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Price:
$7.33 USD
Stock:
In stock (500 units), ready to be shipped

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Description

2GT Timing Belt Pulley — Precise 2mm Pitch Drive for 3D Printers & DIY Automation

When your 3D printer skips steps or your CNC axis loses position, the culprit is often a worn or mismatched timing pulley. Makers, hobbyists, and small-workshop engineers who demand repeatable motion need a pulley that locks onto the shaft without slop and meshes cleanly with a 2GT belt every single cycle. This 2GT timing belt pulley is designed exactly for that use case.

Each pulley is machined from aluminum alloy with an anodized finish and follows the AF-type (with flange) profile. The belt contact width is 7mm, matching standard 6mm 2GT belts with side-flange retention. Tooth count spans 20T through 80T, and bore options run from 3mm to 15mm (approximately 0.12 in to 0.59 in), covering the most common stepper and servo motor shaft diameters used in desktop automation.

Typical applications include 2GT timing belt pulley for 3D printer X/Y axis drives, CNC router gantry systems, laser engraver carriage assemblies, and compact conveyor or pick-and-place mechanisms where a 2mm pitch GT2 pulley delivers the low-backlash linear motion required for accurate positioning.

⚙️ Compatibility: Fits standard 2GT / GT2 open or closed timing belts with 6mm width. Bore sizes 3–15mm suit NEMA 17, NEMA 23, and equivalent stepper motor shafts. Verify your shaft diameter and belt width before ordering.

✅ Key Features of These 2GT Timing Belt Pulleys

🦷 Wide Tooth Range — 20T to 80T

Twenty tooth-count options let you dial in the exact gear ratio for your drive system, from fast-travel 20T configurations to high-torque 80T setups.

🔩 Broad Bore Selection — 3mm to 15mm

Eleven bore sizes (3, 4, 5, 6, 6.35, 8, 10, 12, 12.7, 14, 15mm) cover the most common stepper and servo shaft diameters without requiring custom machining.

🏗️ AF-Type Flanged Design

Integrated side flanges keep the 2GT belt tracking on the pulley face, reducing derailment risk during rapid direction changes common in 3D printing and CNC routing.

⚖️ Aluminum Alloy Construction

Lightweight aluminum alloy body reduces rotational inertia for faster acceleration response, while the anodized surface resists wear from continuous belt contact.

📐 2mm Pitch — GT2 Standard

The 2mm tooth pitch is the industry standard for desktop motion systems, ensuring direct compatibility with the widest range of 2GT / GT2 belts available on the market.

🔧 Set-Screw Shaft Retention

Each pulley includes a set-screw bore for secure shaft clamping. Tighten against a flat on the motor shaft for maximum torque transfer and minimal runout.

📐 Technical Specifications — 2GT Timing Belt Pulley

Belt Profile 2GT (GT2)
Tooth Pitch 2mm
Tooth Count Options 20T, 22T, 24T, 25T, 26T, 28T, 30T, 32T, 34T, 35T, 36T, 38T, 40T, 45T, 48T, 50T, 55T, 60T, 70T, 80T
Belt Width (contact) 7mm (fits 6mm 2GT belt)
Bore Diameter Options 3, 4, 5, 6, 6.35, 8, 10, 12, 12.7, 14, 15mm
Pulley Type AF-type (flanged)
Material Aluminum alloy, anodized
Outer Diameter See variant options
Hub Length See variant options
Shaft Retention Set screw
Quantity per Order 1 piece

❓ Frequently Asked Questions

How do I choose the right tooth count for my 3D printer?

For most Cartesian 3D printers (e.g., Ender-style), 20T pulleys are standard on the motor shaft paired with an idler. If you are building a CoreXY or custom gantry, match the tooth count to your belt path geometry and desired steps-per-mm. Higher tooth counts increase belt speed per motor revolution but reduce torque.

Which bore size fits a NEMA 17 stepper motor shaft?

Standard NEMA 17 stepper motors have a 5mm output shaft. Select the 5mm bore variant. If your motor has a D-shaft flat, tighten the set screw against the flat for a secure, non-slip connection.

Are these pulleys compatible with GT2 belts?

Yes. The 2GT profile is mechanically identical to GT2 — both use a 2mm pitch with the same tooth geometry. These pulleys are fully compatible with standard 2GT / GT2 open-ended and closed-loop belts with 6mm width.

How strong is the aluminum alloy used in these pulleys?

The pulleys are machined from aluminum alloy (typically 6061 or equivalent grade) with an anodized surface treatment. This provides adequate tensile strength for desktop 3D printing, laser engraving, and light CNC routing loads. For heavy industrial drives with high belt tension, verify load requirements against the pulley's rated capacity.

Will the flanges prevent belt derailment?

The AF-type flanged design adds side walls on both edges of the pulley face, which physically constrain the belt from sliding off laterally. This is especially useful in high-speed or direction-reversing applications like 3D printer X/Y axes. Ensure your belt is properly tensioned and aligned for best results.

Can I use these pulleys in a CNC router or laser engraver?

Yes. These 2GT timing belt pulleys are well-suited for CNC router gantry drives, laser engraver carriage systems, and similar light-duty automation where a 2mm pitch belt provides the low-backlash linear motion needed for accurate positioning. Match the bore to your drive shaft diameter and confirm belt width compatibility.

What is the difference between AF-type and smooth-bore pulleys?

AF-type pulleys include integrated flanges on both sides of the tooth face, which guide the belt and prevent lateral drift. Smooth-bore (non-flanged) pulleys are typically used as idlers or in systems where the belt is constrained by other means. For driven (motor-side) pulleys, the AF-type flanged design is generally preferred.

🛒 Select your tooth count (Types) and bore diameter above, then add to cart.

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