XL Timing Belt Pulley 22-60T Synchronous Wheel With Steps for 13mm Width Belt 3D

Tooth count determines the pitch diameter and, combined with your motor pulley, sets the drive ratio. A higher tooth count gives a larger pitch diameter, which increases belt speed at the same RPM. For 3D printers and CNC machines, match the tooth count to your existing belt loop length and desired steps-per-mm calculation. Common pairings are 20T driver + 40T driven for a 2:1 reduction, or matched tooth counts for a 1:1 drive.

Select the bore diameter that matches your motor or drive shaft exactly. Common NEMA 17 stepper motors use a 5mm shaft; NEMA 23 motors typically use 6.35mm (1/4 in) or 8mm shafts. For lead screws, measure the shaft OD with calipers before ordering. The bore options in this listing range from 4mm to 28mm, covering most standard shaft sizes without requiring a separate bushing.

Yes. These pulleys use the standard XL tooth profile with a 5.08mm (0.200 in) pitch, which is compatible with any XL-designation timing belt. The tooth width is 14mm, designed to run with a 13mm-wide XL belt. Confirm your belt is labeled XL pitch before ordering — MXL, L, and HTD belts use different tooth profiles and are not interchangeable.

The stepped hub acts as an integrated flange on one or both sides of the tooth face, which helps keep the belt laterally aligned during operation. For most single-belt, lightly loaded applications this is sufficient. In high-load or high-speed systems where belt tracking is critical, consider adding a tensioner or verifying pulley alignment with a straightedge across both pulleys.

These pulleys are machined from aluminum alloy, which offers a good balance of rigidity and low rotating mass. Aluminum is not susceptible to rust under normal indoor operating conditions. For outdoor or high-humidity environments, consider applying a light protective coating. Aluminum pulleys are not recommended for extremely high-torque applications where steel pulleys would be more appropriate.

In most cases, yes — provided you match the tooth count, bore diameter, and belt width to your existing setup. The XL tooth profile is a widely used standard, so these pulleys are dimensionally interchangeable with other XL-series pulleys. Verify the bore diameter matches your shaft and that the 14mm tooth width is compatible with your belt width before ordering.

Set screw inclusion varies by variant. Please refer to the variant detail or contact us to confirm whether a set screw is included with your selected tooth count and bore combination. If a keyway is required for your application, contact us before ordering to confirm availability.