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When a skipped tooth or misaligned pulley ruins a multi-hour print or throws off a CNC cut, the root cause is almost always an undersized or poorly machined synchronous wheel. Makers, desktop CNC builders, and automation engineers who demand repeatable motion need a GT2 timing belt pulley they can trust across thousands of cycles.
These GT2 32-tooth synchronous pulleys are machined from aluminum alloy with a natural anodized finish. They are designed for GT2 open-loop timing belts in 6 mm (0.24 in) and 10 mm (0.39 in) widths, with bore options ranging from 5 mm to 10 mm (0.20–0.39 in) to suit a wide range of motor shaft diameters. Each pulley features a 2 mm tooth pitch consistent with the GT2 profile standard.
Typical use cases include X/Y axis drives on FDM 3D printers such as Ender, Voron, and RatRig builds; feed-axis drives on desktop CNC routers and laser engravers; and lightweight robotic arm joints or conveyor indexing systems where low backlash and consistent tooth engagement are critical.
| Tooth Count | 32 Teeth |
|---|---|
| Tooth Profile | GT2 (2 mm pitch) |
| Belt Width Compatibility | 6 mm / 10 mm |
| Bore Diameter Options | 5 mm / 6 mm / 6.35 mm / 8 mm / 10 mm |
| Material | Aluminum Alloy |
| Finish | Anodized |
| Outer Diameter (approx.) | See variant options |
| Flange | See variant options |
| Set Screw | See variant options |
| Pack Quantity | 1 / 2 / 5 / 10 PCS (select above) |
NEMA 17 stepper motors (the most common in 3D printers) typically have a 5 mm output shaft — select the 5 mm bore. NEMA 23 motors commonly use an 8 mm shaft. If your motor shaft is imperial (e.g., 1/4 inch), choose the 6.35 mm bore. Always measure your shaft diameter with calipers before ordering.
The belt width determines how much surface area engages the pulley teeth. A 6 mm belt is standard for most desktop 3D printers (Ender, Voron, etc.) and lighter CNC builds. A 10 mm belt carries higher load capacity and is preferred for wider-format CNC routers, laser cutters, or any axis where belt stretch under load is a concern. Match the pulley width to your existing belt.
Yes. The GT2 tooth profile is an industry-standard geometry with a 2 mm pitch. These pulleys are compatible with any GT2 open-loop timing belt of the matching width (6 mm or 10 mm), regardless of brand. They are not compatible with HTD, T2.5, or T5 profile belts.
Aluminum alloy pulleys are significantly more rigid than injection-molded plastic alternatives. They resist tooth deformation under belt tension, maintain dimensional accuracy at elevated temperatures (such as near a heated print bed), and do not creep over time. For any application running more than a few hours per week, aluminum is the recommended choice.
The anodized finish on these aluminum pulleys provides a hard oxide layer that resists surface corrosion in typical indoor workshop and lab environments. Anodizing also improves wear resistance on the bore and outer surfaces. For humid or outdoor environments, periodic inspection is recommended.
Yes. The GT2 32-tooth profile with 5 mm bore and 6 mm belt width is a standard specification used on many popular FDM printers including the Creality Ender series and Voron 2.4 / Trident builds. Verify your existing pulley tooth count and bore before ordering to confirm a match.
A typical CoreXY printer (Voron, RatRig) uses 4 pulleys on the motion system. A Cartesian printer (Ender 3) typically uses 2. Order the 5-pack or 10-pack for full machine builds or to keep spares on hand — the per-unit cost decreases with larger quantities.
