PU Round Drive Belt — Polyurethane Solid Round Belt 1.5mm–18mm, Green & Red

Measure the groove or pulley channel width on your machine. The belt diameter should generally match or be very slightly larger than the groove width to ensure a snug fit. For example, a 3mm groove typically works best with a 3mm round belt. When in doubt, size up by 0.5mm for a tighter grip.

Yes. PU round belts are typically joined by heat-welding or using a belt connector clip. For a seamless loop, cut the belt to the required circumference, heat both ends briefly, and press them together firmly. This creates a strong, nearly invisible joint in most cases.

Polyurethane round belts generally offer higher tensile strength and better abrasion resistance than standard rubber belts of the same diameter. They also maintain elasticity over a wider temperature range, making them suitable for light-to-medium duty drive applications.

PU round belts are generally resistant to oils, greases, and mild moisture exposure. However, prolonged outdoor UV exposure may cause gradual degradation over time. For wet or outdoor applications, we recommend confirming suitability with your machine manufacturer.

These PU round drive belts are compatible with a wide range of light industrial and hobby machines including lathes, grinders, sewing machines, woodworking equipment, conveyor systems, and other round-groove pulley drives. Always verify the groove diameter and belt path length before ordering.

Both lengths are the same belt material and diameter. The 1-metre option is ideal for single-machine repairs or short drive paths, while the 5-metre option provides enough material for multiple cuts, longer belt runs, or keeping spare stock on hand.

The Green and Red variants are made from the same polyurethane compound and have the same mechanical properties. The color difference is purely aesthetic and can help with visual identification in multi-belt setups.