Chain operation rolling shutter the normal manual operating mechanism for an industrial rolling door is a steel chain pulley system with gearing at high level to suit and provide an easy operation. manually operated rolling shutter is fine as long as the operational effort is understood fully and the speed at which a large door will open and close is also taken into account. there is no way the opening or closing speed can ever be particularly fast with a manual chain shutter operating system as the gearing takes the speed right down as a compromise for effortless operation. as the speed is so slow the manual operated is only really suitable, as we said, for low usage shutter doors. many people we talk to every day say they are looking for a manual and basic steel rolling shutter so many of them end up buying an electric operated rolling shutter as it is not realized how small the difference can actually be in price. in fact, at certain sizes. chain operated rolling shutter is a type of manual rolling shutter
