Measure the center-to-center distance between your two pulleys, then use the standard belt length formula: Belt Length = 2 × C + π × (D1 + D2) / 2, where C is center distance and D1/D2 are pulley pitch diameters.

Each variant lists both tooth count and circumference in mm. For example, 125 Teeth = 1000mm (≈39.4"), 150 Teeth = 1200mm (≈47.2"), 200 Teeth = 1600mm (≈63.0"). When in doubt, size up — a slightly longer belt can generally be tensioned; a short belt cannot be stretched.

HTD 8M belts are generally rated for moderate-to-heavy power transmission. The 30mm width typically supports higher torque loads than narrower 20mm variants of the same profile. Actual capacity depends on pulley diameter, RPM, wrap angle, and application duty cycle. Consult your drive system's engineering specifications to confirm suitability for your load requirements.

HTD timing belts are typically constructed from neoprene rubber with fiberglass or steel cord reinforcement, which offers reasonable resistance to moisture and mild chemicals. However, prolonged exposure to UV radiation, petroleum-based oils, or harsh solvents can degrade the belt material over time. For outdoor installations or washdown environments, verify the specific material composition with us before ordering.

Yes. This belt follows the HTD (High Torque Drive) 8M profile standard — 8mm pitch with a curved tooth profile. It is compatible with any HTD 8M pulley of appropriate width. A 30mm wide belt generally pairs with pulleys that are 30mm or wider (32mm flanged pulleys are common).

It is NOT interchangeable with GT2, T8, T10, or trapezoidal tooth profiles — the tooth geometry is different and mixing profiles will cause skipping or premature wear.

Each variant is labeled with tooth count and belt circumference (e.g., "HTD-8M 150Teeth 1200mm"). Match the circumference to your required belt loop length. If your machine's documentation specifies a pitch length, that is the same value as the circumference listed here. Confirm the 30mm width matches your pulley flange width before ordering.

HTD (High Torque Drive) belts use a rounded, curvilinear tooth profile designed to reduce stress concentration and handle higher torque than trapezoidal T-profile belts (T8, T10, XL, etc.). GT2 is a further refinement of the HTD profile with tighter tolerances, generally preferred for high-precision motion control (e.g., 3D printer axes). HTD 8M is typically chosen for power transmission applications where torque capacity matters more than sub-millimeter positioning accuracy.

No. This is a closed-loop (endless) belt and cannot be cut and rejoined without specialized splicing equipment. Please select the variant that matches your required circumference from the dropdown above. If you need an open-ended belt that can be cut to a custom length, that is a different product type — contact us and we can advise.