XL 10-100 Zähne Riemenscheibe Zahnrad 10T-100T Pulley für Zahnriemen 10mm Breite

BF-type pulleys use a set screw through a side flange to lock onto the shaft — simple and compact, ideal when you rarely need to reposition the pulley. K-type pulleys use a clamping hub that grips the shaft concentrically with zero backlash and can be repositioned without tools, making them better suited for applications where precise axial positioning matters or frequent adjustments are needed.

Common NEMA 17 stepper shafts are 5 mm; NEMA 23 shafts are typically 6.35 mm (1/4 in) or 8 mm. Servo motors and DC gear motors vary widely — measure your shaft diameter with calipers before ordering. The bore must match your shaft exactly; a loose fit causes vibration and positional error.

Gear ratio is determined by the ratio of teeth on the driven pulley to teeth on the driving pulley. For example, a 20T drive pulley paired with a 40T driven pulley gives a 2:1 reduction. Smaller tooth counts on the drive pulley increase torque and reduce speed; larger tooth counts increase speed and reduce torque. Choose based on your motor's speed/torque curve and the linear speed you need at the output.

Aluminum alloy XL pulleys are the industry standard for light-to-medium CNC routers, laser cutters, and 3D printers operating at typical feed rates. For heavy-duty industrial applications with sustained high loads, steel pulleys may be more appropriate. These pulleys are well-suited for hobbyist and small-workshop CNC builds running intermittent or continuous duty cycles at normal cutting forces.

The anodized aluminum finish provides a hard, corrosion-resistant oxide layer that protects against oxidation in typical indoor workshop environments. Avoid prolonged exposure to salt spray, strong acids, or alkaline solutions. For outdoor or high-humidity environments, periodic inspection is recommended.

Yes — all pulleys in this series share the same XL pitch (5.08 mm), so any combination of tooth counts can run on the same XL belt. You will need to calculate the correct belt length for your center distance and tooth counts. Use a standard XL belt length calculator: Belt Length ≈ 2C + π(D1+D2)/2 + (D2−D1)²/(4C), where C is center distance and D1/D2 are pitch diameters.

The 15 mm belt-width variants (available for XL 20T) have a wider tooth face and flanges to accommodate a 15 mm wide XL belt, which can transmit more torque than a 10 mm belt at the same tension. Use 15 mm variants when your drive system requires higher power transmission or when you are already using 15 mm XL belts in your build.