Round Urethane Drive Belt – Green Rough Surface, 1.5mm to 18mm Diameter

Measure the existing belt or the pulley groove width to determine the correct diameter. For length, measure the center-to-center distance between pulleys and calculate the belt path — generally: belt length = 2 × center distance + π × (pulley diameter / 2). When in doubt, order slightly more than you need; this belt is sold by the meter and can be cut to size. Common diameters are typically 3mm–6mm for light-duty applications and 8mm–18mm for heavier loads.

Urethane round belts generally handle light-to-medium power transmission loads. Exact tensile strength varies by diameter — larger diameters (10mm–18mm) typically support greater loads than smaller ones (1.5mm–4mm). For heavy industrial applications, please contact us to confirm suitability before ordering.

Urethane is generally resistant to oils, mild chemicals, and moisture, making it more suitable for damp or lightly oiled environments than rubber belts. However, prolonged UV exposure or immersion in harsh chemicals may degrade performance over time. For outdoor installations, consider shielding the belt from direct sunlight when possible.

Round urethane belts are designed for use with round-groove (U-groove) or V-groove pulleys. The groove diameter should closely match the belt diameter for optimal grip and tracking. Using a groove that is too wide will reduce contact area and cause slipping; too narrow may cause the belt to ride up. Always verify pulley groove dimensions before ordering.

These belts can typically be joined using a belt welding tool (hot-knife or heat gun method) to fuse the urethane ends together, or with urethane-compatible belt lacing connectors. A clean, square cut on both ends is essential for a strong, smooth joint. We recommend practicing on a scrap piece before making the final join.

These green rough-surface urethane round belts are commonly used in woodworking machinery (scroll saws, band saws, drill presses), light conveyor systems, packaging equipment, textile machinery, and general DIY power transmission setups. The rough surface finish improves grip on smooth pulleys and conveyed materials.

This belt is sold as a straight, open-ended length by the meter (available in 1m, 2m, 3m, 5m, 10m, 20m, 50m, and 100m options). You cut it to your required length and join the ends yourself to form a loop. This gives you maximum flexibility for custom machine setups and eliminates the need to stock multiple pre-formed loop sizes.