GT2 6mm Timing Belt Tooth Idler Drive Pulley 16 20 48 60 80T Bore 3-14mm Pulley

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GT2 6mm Timing Belt Tooth Idler Drive Pulley 16 20 48 60 80T Bore 3-14mm Pulley

HomeDIYer

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By HomeDIYer®

Tooth: 16T

Bore: 5mm

Quantitys: 1pcs

Price:

$6.68 USD

Stock:

In stock (500 units), ready to be shipped

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GT2 Timing Belt Pulley for Precise, Backlash-Free Motion Control

Skipped steps, belt slip and inconsistent positioning can stall a 3D printer build or a small CNC project. This GT2 timing belt pulley is made for makers, hobbyists and small-workshop builders who need repeatable motion from a motor shaft without fighting loose belts or mismatched profiles.

Each pulley is machined from aluminium with a 2mm GT2 tooth profile designed for 6mm-wide GT2 belts. Tooth counts range from 16T to 80T and bore sizes from 3.17mm to 14mm (roughly 0.125" to 0.55"), so you can match it to common stepper shafts and idler positions. Grub-screw fixing keeps the pulley locked to the shaft during operation.

Typical uses include 3D printer X/Y/Z axis drives, GT2 idler and tensioner setups, small CNC and laser gantry systems, camera sliders and DIY robotics. Choose a single pulley for a repair or a multi-pack for a full multi-axis build.

🔧 Designed for 6mm-wide GT2 timing belts (2mm pitch). Confirm your motor shaft diameter and belt width before ordering.

✅ Key Features of These GT2 Timing Belt Pulleys

⚙️ GT2 2mm tooth profile matched to 6mm GT2 belts for smooth, backlash-free power transfer.
🪛 Grub-screw fixing clamps the pulley firmly to the motor or idler shaft.
🔩 Bore options from 3.17mm to 14mm to fit common stepper and idler shafts.
🔢 Tooth counts from 16T to 80T for a range of gear ratios and axis speeds.
🧱 Aluminium construction for corrosion resistance and stable running under load.
📦 Available as single pieces or 2/4/10/20-pack for multi-axis builds and spares.

📐 Technical Specifications — GT2 Timing Belt Pulley

Type	GT2 timing belt pulley / idler
Tooth profile	GT2, 2mm pitch
Compatible belt width	6mm (GT2)
Number of teeth	16T / 20T / 48T / 60T / 80T (See variant options)
Bore diameter	3.17mm–14mm (approx. 0.125"–0.55"), See variant options
Material	Aluminium
Colour / Finish	Silver
Fixing method	Grub screw (set screw)
Pack quantity	1 / 2 / 4 / 10 / 20 pcs (See variant options)
Weight	See variant options

❓ Frequently Asked Questions

How do I choose the right tooth count?

Match the tooth count to your gear ratio and space. Lower counts such as 16T or 20T are common on stepper drive shafts, while 48T–80T are used where you want a larger reduction or a bigger idler. Check your machine or belt-path design before selecting.

Which bore size should I select?

Choose the bore that matches your motor or idler shaft diameter. Options run from 3.17mm to 14mm. Measure your shaft (many NEMA 17 steppers use a 5mm shaft) and pick the matching bore under the variant options.

How strong are these pulleys under load?

The aluminium body handles typical 3D printer, CNC hobby and DIY robotics loads that use 6mm GT2 belts. For heavy industrial duty, verify the load and belt tension against your own design requirements.

Are they corrosion resistant?

Aluminium resists rust and holds up well in normal indoor workshop and enclosure conditions. For damp or outdoor environments, add protection appropriate to your setup.

Will this fit my GT2 belt?

These pulleys use the GT2 2mm tooth profile and are designed for 6mm-wide GT2 belts. Confirm your belt is GT2 profile and 6mm wide for correct engagement.

How is the pulley secured to the shaft?

Each pulley is fixed with a grub (set) screw that tightens against the shaft, ideally onto a flat if your shaft has one. Tighten firmly to prevent slipping during motion.

Should I buy a single pulley or a multi-pack?

Pick a single piece for a repair or a one-axis test, or a 2/4/10/20-pack when building a full multi-axis machine or keeping spares on hand. Select the pack size under the variant options.

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