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When your motion-control build demands consistent tooth engagement and zero belt slip, a mismatched or worn pulley becomes the weakest link. Makers, engineers, and desktop-CNC builders who rely on 2GT belt systems need a 36-tooth synchronous wheel that holds tight tolerances across every axis — whether they're dialing in a Reprap extruder or tuning a laser-cutter gantry.
This 2GT 36T timing pulley is machined from aluminum alloy with a natural or anodized finish. The pulley body accommodates a 10 mm wide 2GT (GT2) belt and is available with bore diameters ranging from 5 mm to 12 mm (approximately 0.20 in to 0.47 in), covering the most common motor shaft sizes used in hobby and light-industrial automation. A set-screw hub locks the pulley firmly to the shaft without adhesives.
Typical applications include Reprap and CoreXY 3D printer X/Y axis drives, desktop CNC router and laser-engraver gantry systems, and small-scale robotics or conveyor belt mechanisms where a 2GT 36-tooth synchronous wheel provides the torque-to-speed ratio needed for smooth, repeatable positioning.
Matches the GT2 / 2GT belt tooth geometry for smooth, low-backlash power transmission — ideal for positioning axes where accuracy matters.
Available in 5 mm, 6 mm, 6.35 mm (1/4"), 8 mm, 10 mm, and 12 mm bore diameters to fit the widest range of stepper and servo motor shafts without adapters.
Integrated set-screw collar secures the pulley to the shaft, preventing rotational slip under load without requiring press-fit tooling or adhesives.
Machined aluminum construction keeps rotating mass low, reducing inertia for faster acceleration and deceleration in high-cycle 3D printing and CNC applications.
Designed for 10 mm wide 2GT timing belts — the standard width used in most Reprap, CoreXY, and desktop CNC motion systems for balanced load capacity.
Available in 1, 2, or 5-piece packs so you can stock exactly what your build or repair project requires without over-ordering.
| Belt Profile | 2GT (GT2) |
|---|---|
| Number of Teeth | 36 T |
| Belt Width | 10 mm |
| Bore Diameter | 5 / 6 / 6.35 / 8 / 10 / 12 mm (see variant options) |
| Pitch | 2 mm |
| Pitch Diameter | approximately 22.92 mm (0.902 in) |
| Outside Diameter | approximately 24.92 mm (0.981 in) |
| Hub Locking | Set screw |
| Material | Aluminum alloy |
| Finish | See variant options |
| Quantity per Pack | 1 / 2 / 5 PCS (see variant options) |
| Weight (per piece) | See variant options |
Most NEMA 17 stepper motors have a 5 mm output shaft. Select the 5 mm bore variant for a direct fit. If your motor has a D-shaft or a different diameter, measure the shaft with calipers before ordering. The 6 mm and 8 mm bore options suit larger NEMA 17 variants and NEMA 23 motors.
Yes. The 2GT and GT2 tooth profiles are functionally identical and fully interchangeable. This pulley works with any standard 2GT / GT2 open-loop or closed-loop timing belt that is 10 mm wide.
The set screw provides a firm mechanical lock suitable for the torque levels typical of NEMA 17 and NEMA 23 stepper motors in 3D printing and light CNC use. For best results, tighten the set screw against a flat on the motor shaft (D-shaft) if one is present, and use a thread-locking compound for high-vibration environments.
The aluminum alloy body forms a natural oxide layer that resists everyday corrosion in indoor environments. For humid or outdoor-adjacent applications, an anodized finish variant (where available) provides additional surface protection. Avoid prolonged exposure to salt spray or strong acids.
Yes. The 2GT 36T pulley is commonly used as a motor-drive pulley in CoreXY, Voron, and similar belt-driven 3D printer architectures. Confirm that your design calls for a 36-tooth count and 10 mm belt width — some builds use 20T or 16T pulleys on the motor shaft and 36T or 40T on idler positions.
A single-axis drive typically requires 1 pulley per motor. A CoreXY or H-bot system uses 2 motor pulleys. Order the 5-piece pack if you are building multiple machines, stocking spares for a workshop, or running a small production line — the per-unit cost decreases with larger packs.
With a 2 mm pitch and 36 teeth, the pitch diameter is approximately 22.92 mm (0.902 in) and the outside diameter is approximately 24.92 mm (0.981 in). Use the pitch diameter — not the outside diameter — when calculating belt length and center-to-center distances in your motion system design.
