- 1-807-228-1532
- support@dnb3d.ca
- Free Shipping Orders over $175
- Conditions Apply
Premium GT2 Timing Pulley with 20 teeth, 5mm bore, 2mm pitch, and 9mm belt support for Rat Rig V-Core 3, DIY CoreXY printers, CNC machines, robotics, and precision GT2 motion systems.
$13.29
The Premium GT2 Timing Pulley is a high-quality 20 tooth GT2 synchronous timing pulley designed for 9mm GT2 belt motion systems. This pulley features a 5mm bore, 2mm tooth pitch, aluminum alloy construction, 14mm flange outer diameter, 12mm tooth outer diameter, and 20mm overall height. It is especially useful for Rat Rig V-Core 3 XY drive assemblies, DIY CoreXY printers, CNC machines, robotics projects, laser engravers, and custom belt-driven motion systems.
This premium version is different from many standard GT2 timing pulleys because it uses a 14mm outer flange diameter. Your current dnb3D product page notes that this compact flange size means the pulley does not need modification to work with the Rat Rig V-Core 3 XY Drive Assembly. That makes it a strong option for builders who want a cleaner fit, better clearance, and less extra work during assembly.
GT2 timing belts are commonly used in 3D printers and compact machine motion systems because they provide synchronized belt movement in a small mechanical package. This Premium GT2 Timing Pulley supports a maximum belt width of 9mm, making it suitable for motion systems that use wider GT2 belts than the common 6mm format. Always confirm belt width, tooth pitch, bore size, and pulley clearance before installation.
This is a toothed timing pulley designed for mechanical transmission. The 20 tooth GT2 profile engages the belt teeth to transfer motion from a shaft or motor to the belt. This makes it suitable for XY drive assemblies, belt-driven gantries, CoreXY motion systems, belt reduction layouts, and other synchronized motion applications where accurate belt engagement matters.
The compact 14mm flange outer diameter is the key feature of this premium pulley. Standard flanges in similar pulley classes can be larger and may require extra clearance or modification in tight printer assemblies. This premium pulley is listed as compatible with the Rat Rig V-Core 3 XY Drive Assembly without modification, helping simplify build work and improve fitment in compact belt paths.
The 5mm bore allows this pulley to fit compatible 5mm shafts, motor shafts, axles, or custom motion hardware depending on the build. Before installation, confirm shaft fitment and check that any set screws, collars, spacers, brackets, or nearby printed parts have proper clearance. Poor shaft fit or pulley alignment can cause wobble, belt tracking issues, skipped motion, and premature belt wear.
The pulley is made from aluminum alloy, giving it a good balance of strength, low weight, and clean machine appearance. Aluminum pulleys are widely used in 3D printer and light machine builds because they reduce rotating mass while providing reliable belt engagement in properly aligned motion systems.
For related components, 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 used where synchronized belt motion, repeatability, and compact mechanical drive layouts are required. 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 Rat Rig V-Core 3, upgrading a DIY CoreXY printer, assembling a CNC axis, or designing a custom belt-driven machine, this Premium GT2 Timing Pulley provides a precise 9mm GT2 belt motion component with compact RatRig-friendly flange fitment.
The Premium GT2 Timing Pulley is a 20 tooth GT2 synchronous timing pulley designed for 9mm belt motion systems, Rat Rig V-Core 3 XY drive assemblies, DIY 3D printers, CNC projects, robotics, and custom machine builds.
| Product Type | Premium GT2 synchronous timing pulley / drive pulley |
|---|---|
| Tooth Profile | GT2 |
| Tooth Pitch | 2mm |
| Number of Teeth | 20 |
| Compatible Belt Type | GT2 synchronous timing belt |
| Maximum Belt Width | 9mm |
| Inner Bore | 5mm |
| Inner Diameter | 5mm |
| Tooth Outer Diameter | 12mm |
| Flange Outer Diameter | 14mm |
| Overall Height | 20mm |
| Material | Aluminum alloy |
| Premium Fitment Note | 14mm flange outer diameter does not need modification to work with Rat Rig V-Core 3 XY Drive Assembly |
| Common Printer Fitment | Rat Rig V-Core 3 XY Drive Assembly; 2 pieces required for that application |
| SKU | DB-0055-5964 |
| Common Applications | Rat Rig V-Core 3, DIY CoreXY printers, 3D printers, CNC machines, robotics, laser engravers, plotters, automation projects, and belt-driven motion systems |
| Installation Style | Mounted on compatible 5mm shaft, motor shaft, or axle hardware as part of a GT2 belt drive system |
| Assembly Warning | Confirm belt width, 5mm bore fit, tooth pitch, shaft fit, pulley alignment, flange clearance, and mounting hardware 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 Premium GT2 Timing Pulley, confirm that your belt is a compatible GT2 synchronous timing belt and that your design requires a pulley for up to 9mm belt width. Using the wrong belt width or tooth profile can cause poor engagement, belt wear, skipped motion, or unreliable movement.
This pulley has a 5mm bore. Confirm that your motor shaft, axle, bolt, or shaft hardware matches the bore and allows proper installation. A loose fit can cause wobble or slipping, while an oversized or damaged shaft can damage the pulley during installation.
This is a toothed GT2 timing pulley, not a smooth idler. It is intended to engage the toothed side of a GT2 timing belt for mechanical transmission. If your application needs to guide the smooth back side of the belt, use a smooth idler pulley instead.
This part is listed for the Rat Rig V-Core 3 XY Drive Assembly, with 2 pieces required for that use. The compact 14mm flange is designed to work without modification in that assembly, but you should still confirm your exact printer version, build guide, and printed part set before ordering or replacing motion hardware.
Proper pulley alignment is important for smooth and accurate motion. The pulley should sit square to the belt path so the belt teeth engage evenly. 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.
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.
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 Rat Rig builders, DIY printer owners, makers, 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.
Have questions about a specific build? Click here to contact the shop.
