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Precision 20T GT2 Timing Pulley with 5mm bore and natural aluminum finish for accurate belt-driven motion in 3D printers, CNC machines, robotics, laser engravers, and custom DIY motion systems.
$5.29
The 20T GT2 Timing Pulley is a compact motion component used in 3D printers, CNC machines, laser engravers, robotics, automation projects, plotters, belt tensioning systems, and custom mechanical assemblies. Designed for compatible 6mm GT2 timing belts, this pulley provides accurate belt engagement for smooth, repeatable motion in compact machine builds.
This natural aluminum version features a 20 tooth GT2 profile, 5mm bore, and clean silver aluminum finish. The 20T size is one of the most common pulley formats used in 3D printer motion systems because it offers a practical balance of compact size, good belt wrap, and predictable movement. Whether you are building a new printer, repairing a belt drive, upgrading a CNC axis, or stocking spare motion parts, this 20T GT2 Timing Pulley is a useful machine-building component.
GT2 timing belts are widely used in 3D printers and light-duty motion systems because they provide synchronized belt movement in a compact format. This pulley is designed for 6mm wide GT2 belts, making it suitable for many printer, CNC, laser, robotics, and DIY motion applications. Always confirm belt width, tooth profile, bore size, and pulley style before installation.
The 20 tooth profile is commonly used in belt-driven printer and machine systems. It can be used on motor shafts, drive shafts, belt reduction assemblies, gantry systems, carriage motion, camera sliders, plotters, and prototype machines. A properly installed pulley helps reduce belt slip, uneven wear, motion noise, and tracking problems.
The 5mm bore makes this pulley compatible with many 5mm motor shafts and shaft-style motion assemblies. It may also be used with compatible axles, rods, or custom hardware depending on the design. Before installation, confirm that the pulley fits the shaft correctly and that any set screws, spacers, collars, washers, or brackets provide proper clearance.
The natural aluminum finish gives the pulley a clean, simple appearance that pairs well with aluminum extrusion frames, machined brackets, silver hardware, printed brackets, and custom machine layouts. Aluminum pulleys are commonly used in printer and machine builds because they offer a strong balance of stiffness, low mass, and durability.
This 20T GT2 Timing Pulley can be used in CoreXY printers, Cartesian printers, custom 3D printer builds, CNC axes, laser engraver upgrades, robotics mechanisms, small belt tensioners, motor drive assemblies, and compact automation projects. A properly installed pulley helps reduce belt slip, tracking problems, uneven belt wear, and noisy motion.
For related parts, browse the 3D Printer Parts category or the Fasteners category. This pulley can be paired with GT2 timing belts, metric socket head screws, spacers, bearings, linear rails, guide blocks, smooth rods, and other motion hardware from dnb3D.
Timing belt pulley systems are commonly used where synchronized belt motion, repeatability, and compact mechanical drive layouts are needed. For general engineering context on synchronous timing belt systems, see this synchronous belt drive reference.
Every order is hand-inspected and precision-shipped from dnb3D in Marathon, Ontario. Whether you are building a 3D printer, repairing a belt drive, assembling a CNC axis, or designing a custom motion system, this 20T GT2 Timing Pulley provides a reliable drive pulley solution for 6mm GT2 belt systems.
The 20T GT2 Timing Pulley is designed for compatible 6mm GT2 timing belt motion systems used in 3D printers, CNC projects, robotics, laser engravers, and custom machine assemblies.
| Product Type | GT2 synchronous timing belt pulley / drive pulley |
|---|---|
| Tooth Profile | GT2 |
| Tooth Count | 20 tooth / 20T |
| Compatible Belt Type | GT2 timing belt |
| Compatible Belt Width | 6mm |
| Bore Size | 5mm |
| Material | Aluminum / aluminum alloy |
| Finish / Colour | Natural aluminum / silver |
| Common Use | Drive pulley, motor pulley, belt drive systems, synchronized motion, printer motion hardware, CNC motion, robotics, and automation |
| Compatible Hardware | 5mm motor shafts, 5mm shafts, compatible axles, set screws, spacers, collars, brackets, and custom pulley mounts |
| Common Applications | 3D printers, CoreXY printers, Cartesian printers, CNC machines, robotics, laser engravers, plotters, camera sliders, automation projects, and belt-driven motion assemblies |
| Installation Style | Mounted on compatible 5mm shaft or motor shaft as part of a GT2 belt drive system |
| Assembly Warning | Confirm belt width, bore size, tooth profile, shaft fit, alignment, and clearance before installation. Misalignment can cause belt wear, noise, slipping, or poor motion quality. |
| Fulfillment | Hand-inspected and precision-shipped from dnb3D in Marathon, Ontario, Canada |
Before installing the 20T GT2 Timing Pulley, confirm that your belt is a compatible 6mm wide GT2 timing belt and that your shaft, motor shaft, or axle hardware matches the 5mm bore. Mismatched parts can cause wobble, slipping, binding, poor belt tracking, or premature wear.
Proper pulley alignment is important for smooth and accurate motion. The pulley should sit square to the belt path so the belt tracks evenly across the teeth. Misalignment can cause belt edge wear, noise, skipped motion, uneven tension, or rubbing against nearby parts.
If your pulley uses set screws, tighten them against the proper shaft surface or flat where applicable. Use moderate torque and avoid stripping the set screw or damaging the shaft. For high-vibration printer and CNC applications, removable threadlocker may be used if compatible with your build.
Make sure spacers, washers, collars, brackets, and printed parts do not rub against the rotating pulley or belt. The pulley should spin freely after installation with no side binding, shaft wobble, or interference.
Use reasonable belt tension for your machine design. A belt that is too loose can skip or produce inaccurate motion, while a belt that is too tight can increase bearing load, create noise, wear the belt, or strain motor shafts and brackets.
Keep the pulley teeth and belt path free from dust, chips, filament debris, grease buildup, and abrasive particles. Contamination can reduce belt life and create rough or noisy motion. Inspect the pulley during regular printer or machine maintenance.
To keep the natural aluminum finish clean, avoid abrasive tools, harsh cleaners, and unnecessary scratching during installation. Wipe with a soft cloth before final assembly if the pulley will be visible on the finished machine.
Every order is hand-inspected before shipping. dnb3D precision-ships pulleys, fasteners, motion parts, and small machine hardware across Canada from our Ontario facility, helping makers, builders, and machine owners receive clean, usable parts ready for careful installation.
At dnb3D, we don’t just ship boxes—we manufacture solutions. Operating our Industry 4.0 micro-factory in Marathon, Ontario, means your order is handled by the same people who design and test these components.
Ready to Ship (3D Printer Parts & Hardware): Finished, inspected, and on the shelf. Dispatched within 1 to 2 business days.
In-House Manufacturing (Laser, Plasma, 3D Prints): These items are manufactured “fresh” to order. Please allow 3 to 5 business days for precision cutting and finishing.
Custom Projects: Bespoke designs require a consultation and a locked-in timeline before production begins.
We ship nationwide across Canada and the USA. Centrally located on the North Shore of Lake Superior, we are uniquely positioned to get your products moving quickly to either coast.
We stand behind every weld, cut, and print. If a product doesn’t meet your expectations, contact the Hub within 30 days. If we wouldn’t put it in our own shop, we won’t let it sit in yours.
Standard Items: Contact us within 30 days for return authorization. Items must be in original, unused condition.
Custom/Personalized Orders: Digitally fabricated to your exact specs (names, custom dimensions, or unique finishes) are final sale once production begins.
Shipping Costs: Return shipping is the responsibility of the customer unless the item arrived damaged or defective.
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