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When your 3D printer or CNC router loses positional accuracy, the culprit is often a worn or mismatched timing pulley. Makers, engineers, and hobbyists who demand repeatable, backlash-free motion need a pulley that holds tight tolerances across thousands of print hours. The 2GT Synchronous Wheel Step Timing Pulley 32 Teeth BF Type is engineered for exactly that — delivering consistent belt engagement and smooth rotational transfer in demanding motion systems.
This pulley features a 32-tooth 2GT (GT2) tooth profile machined from aluminum alloy, with a dual-flange (BF-type) design to keep the belt tracking true. Available bore sizes range from 5 mm to 10 mm (approx. 0.20″–0.39″), and belt width compatibility covers both 6 mm and 10 mm (approx. 0.24″–0.39″) GT2 belts. The set-screw clamping hub allows secure shaft mounting without adhesives.
Typical use cases include FDM 3D printer X/Y axis drives (compatible with popular CoreXY and Cartesian platforms), desktop CNC router feed systems, and lightweight robotic arm joint drives — anywhere a 2GT synchronous belt drive for 3D printer or CNC motion control is required.
Matches standard GT2 belt pitch (2 mm) for accurate, low-backlash motion transfer in 3D printer and CNC applications.
Twin flanges on both sides of the pulley keep the belt centered and prevent lateral drift during high-speed or long-duration operation.
Available in 5 mm, 6 mm, 6.35 mm (1/4″), 8 mm, and 10 mm bores to fit a wide range of stepper motor shaft diameters.
Choose the belt width that matches your existing drive system — both widths are stocked for direct drop-in replacement or new builds.
Hex set-screw secures the pulley firmly to the motor shaft, allowing quick installation and repositioning without specialized tools.
Lightweight yet rigid aluminum body resists deformation under belt tension, maintaining tooth geometry for consistent layer registration in 3D printing.
| Tooth Count | 32 Teeth |
|---|---|
| Belt Profile | 2GT (GT2), 2 mm pitch |
| Pulley Type | BF (Dual Flange) |
| Material | Aluminum Alloy |
| Bore Diameter | 5 mm / 6 mm / 6.35 mm / 8 mm / 10 mm (see variant options) |
| Compatible Belt Width | 6 mm / 10 mm (see variant options) |
| Shaft Fixing Method | Set Screw (hex key) |
| Outer Diameter | See variant options |
| Weight | See variant options |
Measure your stepper motor shaft diameter with a caliper. Common NEMA 17 motors use a 5 mm shaft, while larger NEMA 23 motors typically use an 8 mm or 10 mm shaft. Select the bore that matches your shaft diameter exactly — a loose fit will cause slippage and layer shifting in 3D prints.
The belt width must match your existing GT2 belt. Most standard FDM 3D printers (e.g., Ender, Prusa-style) use 6 mm wide GT2 belts. Larger-format or higher-torque CNC systems often use 10 mm wide belts for increased load capacity. Check your belt width before selecting a variant.
Yes. The 2GT tooth profile is an industry-standard 2 mm pitch geometry. This pulley is compatible with any GT2 open-loop or closed-loop belt that matches the selected belt width (6 mm or 10 mm), regardless of brand.
The set screw provides firm mechanical clamping suitable for typical 3D printer and light CNC loads. For best results, tighten the set screw against a flat on the motor shaft (D-shaft) if available, and use a thread-locking compound for high-vibration environments. For heavy industrial loads, contact us to confirm suitability.
The aluminum alloy body has good natural corrosion resistance for indoor use in typical workshop or printer enclosure environments. It is not rated for prolonged exposure to moisture, salt spray, or aggressive chemicals. For outdoor or high-humidity applications, consider anodized variants or apply a protective coating.
In most cases, yes — provided the bore size, belt width, and flange type match your current setup. The BF (dual-flange) design is the most common configuration for 3D printers. Verify the outer diameter and hub length are compatible with your printer's belt path and motor mount before installing.
Installation requires only a hex (Allen) key to tighten the set screw — no press-fit tools or special equipment needed. Slide the pulley onto the motor shaft, align it with your belt path, and tighten the set screw securely. Re-check tension after the first few hours of operation.
