Measure the center-to-center distance between your drive and driven pulleys, then calculate the required belt length using the standard formula: L = 2C + π(D+d)/2 + (D−d)²/4C. Belt width should match your pulley groove width. As a general reference, 815mm is approximately 32.1". If you're unsure, contact us with your machine model and we can help confirm the correct size.

Rubber drive flat belts of this type are generally suited for light-to-medium power transmission loads, typical of mask machines and small conveyor motors. Exact tensile strength depends on the specific size and thickness selected. For heavy-duty or high-speed applications, contact us to confirm suitability before ordering.

Rubber flat belts typically offer moderate resistance to moisture and mild environmental exposure, making them generally suitable for indoor production environments. Prolonged outdoor UV exposure or contact with oils, solvents, or chemicals may reduce belt life. For outdoor or chemically exposed environments, contact us to confirm material compatibility.

These rubber drive flat belts are commonly used in mask-making machines, small motor conveyor systems, sewing machines, textile rollers, and similar light industrial equipment with flat pulley drive systems. They are not compatible with V-groove pulleys or toothed timing belt systems. Always verify that your pulley width matches the belt width before ordering.

Yes — custom sizing is available. If your required length, width, or thickness is not listed in the variant options, please contact us with your exact dimensions and we will confirm availability and pricing. This listing is specifically designed to accommodate customized size requests.

Each order includes 6 rubber drive flat belts of the same selected size. Having a pack of 6 ensures you have immediate replacements on hand, reducing production downtime when a belt wears out or breaks during a run.

Generally, loosen the motor mount or tensioner to reduce the center distance between pulleys, slip the new belt over both pulleys, then re-tension according to your machine's specification. Flat belts typically require moderate tension — in most cases, the belt should deflect slightly under finger pressure at the midpoint. Avoid over-tightening, which can cause premature bearing and belt wear.