This bonnell spring production line is designed for large scale production for increase quality and productivity by reducing working cost. Advantage of this bonnell spring production is spring coiling, knotting, heating and after that automatic feeding to assembling machine by using robotic technology for high speed production output. This process will reduce the man power capacity and increase the production output. Approx 90 spring per minute output and PLC touch screen setup reduce the setup time and also reduce the waste of steel wire.