Measure the center-to-center distance between your 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 or face width. If you're replacing an existing belt, the easiest method is to measure the old belt's length, width, and thickness directly. Contact us if you need help — provide your machine model or existing belt dimensions.

Rubber drive flat belts generally handle light to medium transmission loads. Exact tensile strength depends on belt width and thickness — wider, thicker belts carry more load. For high-load or continuous heavy-duty applications, contact us to confirm the specification that fits your requirements before ordering.

Rubber flat belts are generally resistant to moisture and mild humidity, making them suitable for most indoor industrial environments. Prolonged exposure to UV, ozone, or harsh chemicals may reduce service life. For outdoor installations or chemically aggressive environments, contact us to confirm material suitability for your specific conditions.

Yes. These rubber drive flat belts are designed to work with standard flat-face pulleys commonly used in mask machines, textile equipment, and general motor-driven conveyor systems. Always verify that your pulley face width matches or is slightly narrower than the belt width before ordering to ensure proper tracking.

Yes — custom sizing is a core offering for this product. Contact us with your required length, width, and thickness (in mm or inches). We'll confirm feasibility, pricing, and lead time before processing your order. In most cases, custom orders can be accommodated with a short production lead time.

Flat belts are typically preferred for high-speed, light-to-medium load applications where smooth, quiet operation matters — such as mask machines, textile conveyors, and precision equipment. V-belts are generally better suited for higher-torque, lower-speed drives. If your machine originally used a flat belt, replace it with a flat belt of the same profile and dimensions.

Standard in-stock sizes typically ship within 1–3 business days from our US warehouse. Custom-size orders may require additional production time depending on specifications. Contact us before placing a custom order to get an accurate lead time estimate and avoid unexpected delays.