PIV, or positively infinitely variable chain, is a roller chain designed for transmission gearboxes that are used in a variety of industrial applications, such as textile production lines, printing press machines, packaging line equipment and other machinery. The main feature of the PIV roller chain is its variable pitch. The construction of the chain features batches of thin plates that are capable of moving independently of each other. This flexibility allows the chain to mesh with grooves that taper from the edge to the center of the gearbox wheel face at different effective pitch diameters. We offer a selection of PIV roller chains designed for different torque capacities and speed ranges. Contact us directly and provide specifications of your equipment if you need our help choosing the right PIV chain.