During web material winding and unwinding, tension force too large, the roller will be broken, if tension force too small, then it will be loose and not tight. So tension controller is important for web material rewinding and unwinding usage. Through control web material's tension force, then make it rolled and unrolled tight and smooth.

In the rewinding part, it will use the air shaft, safety chuck and NAC pneumatic clutch for tension control, and for the unwinding part, air expansion shaft, safety chuck and NAB air disc brake are available for usage. At the same time, the FL magnetic powder clutch and FZ brake are also available.