Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
When a slipping or mismatched pulley throws off your axis calibration mid-print or causes positioning errors in your CNC router, the entire project suffers. Engineers, makers, and automation builders who demand repeatable, low-backlash motion need a GT2 drive pulley they can rely on — one that fits their shaft exactly and meshes cleanly with standard GT2 belts.
These GT2 10mm timing belt drive pulleys are machined from aluminum alloy with a smooth anodized finish. Each pulley features a 2mm pitch GT2 tooth profile and a 10mm belt width (tooth width 11mm). Available in 28 to 60 tooth counts and bore diameters ranging from 4mm to 25mm (approximately 0.16 in to 0.98 in), with a set screw for secure shaft locking.
Typical applications include 3D printer X/Y axis drives (GT2 belt systems on Ender, Voron, and CoreXY platforms), CNC router and laser engraver motion stages requiring precise linear positioning, and lightweight robotics or automation rigs where low inertia and accurate tooth engagement are critical.
| Belt Type | GT2 (2mm pitch) |
|---|---|
| Belt Width | 10mm |
| Tooth Width | 11mm |
| Number of Teeth | 28 / 30 / 32 / 34 / 35 / 36 / 38 / 40 / 42 / 44 / 45 / 46 / 48 / 50 / 52 / 54 / 56 / 58 / 60 |
| Bore Diameter | 4 / 5 / 6 / 6.35 / 8 / 10 / 12 / 12.7 / 14 / 15 / 16 / 17 / 18 / 19 / 20 / 25mm (see variant options) |
| Material | Aluminum Alloy |
| Shaft Locking | Set Screw |
| Quantity per Order | 1 piece |
| Outer Diameter | See variant options |
| Flange | See variant options |
The tooth count determines your drive ratio. Divide the driven pulley teeth by the drive pulley teeth to get the ratio. For 3D printers, 20T is common on 6mm belts, but 28–40T is typical for 10mm belt systems. Higher tooth counts give finer resolution per motor step; lower counts give more torque. Match your motor's step angle and microstepping to your desired linear resolution.
Standard NEMA 17 stepper motors have a 5mm output shaft. Select the 5mm bore variant. If your motor has a D-cut shaft, the set screw will engage the flat to prevent rotation. For NEMA 23 motors, the shaft is typically 6.35mm (1/4 inch) — select the 6.35mm bore option.
Yes. The GT2 2mm pitch tooth profile is a standardized geometry. These pulleys are compatible with any GT2 timing belt of 10mm width from any manufacturer, including Gates, Bando, and generic GT2 belts commonly used in 3D printers and CNC machines.
The set screw provides a firm mechanical lock when properly tightened with the correct hex key (typically M3). For best results, align the set screw with a flat or keyway on the shaft if present. In high-torque or reversing applications, applying a small amount of thread-locking compound to the set screw is recommended to prevent loosening over time.
10mm wide GT2 pulleys (this product) carry approximately 67% more belt contact area than 6mm variants, resulting in higher load capacity and reduced belt stretch under tension. They are preferred for heavier gantries, dual-drive systems, and applications where belt longevity under continuous cycling is important.
Yes. CoreXY and Voron designs commonly use GT2 belts. Verify the tooth count and bore size match your specific build's BOM (bill of materials). Many Voron 2.4 and Trident builds use 20T pulleys on 6mm belts, but larger-format or modified builds may use 10mm belt systems where these pulleys are directly applicable.
Use a digital caliper to measure the shaft OD at the point where the pulley will sit. Measure in millimeters and select the matching bore. If your shaft is imperial (e.g., 1/4 inch = 6.35mm), select the 6.35mm bore option. Avoid selecting a bore that is larger than your shaft diameter, as this will result in runout and slippage.
