Measure the center-to-center distance between your pulleys, then calculate the required belt perimeter: Perimeter ≈ 2 × center distance + (π × sum of pulley pitch diameters / 2). For example, a 1824mm (≈71.8") belt suits compact CNC or 3D printer setups, while a 2481mm (≈97.7") belt fits larger gantry systems. When in doubt, size up slightly and use a tensioner pulley to take up slack.

The steel wire tension core generally provides tensile strength suitable for light-to-medium duty power transmission. Exact load ratings depend on pulley diameter, operating speed, and duty cycle. For heavy industrial applications, contact us to confirm suitability before ordering.

Polyurethane timing belts typically offer better moisture and oil resistance than neoprene alternatives. They are generally suitable for light outdoor or damp indoor use. Prolonged UV exposure or full immersion in liquids is not recommended without additional protective measures.

Yes. This belt follows the HTD3M tooth profile standard — 3mm pitch, curvilinear tooth form — and is compatible with any standard HTD3M pulley. Always verify that the pulley tooth count and belt width match your application before installation.

Order 1 pc for a single-axis replacement or initial fit test. Choose the 2-pack if you're building a dual-axis system (e.g., CoreXY 3D printer or dual-drive CNC gantry), want a spare on hand, or are outfitting multiple machines — the 2-pack typically offers a better per-unit value.

This belt uses the HTD3M profile: 3mm pitch with a curvilinear (rounded) tooth form. The HTD profile is engineered for higher torque transmission and reduced tooth jump compared to trapezoidal (MXL, XL) profiles, making it well-suited for precision motion control in CNC routers, laser cutters, and 3D printers.

This listing covers the 30mm wide version. Other widths may be available in separate listings in our store. Contact us if you need a different width for your specific application and we'll help you find the right fit.