الوصف

 Differential shaft(friction shaft,air friction controlled rewinding shaft).This shaft is used for rewinding and the special unwinding of slitter machine.Is controlled its friction torque by compressed air.
    The differential shaft is structure by the mandrel and multiple sets of friction rings (differential rings).The friction ring can independent sliding,torque is controlled in central pressure or lateral transfer pressure.ensure every coil rewinding in a constant tension,it’s uniform and tidily from inside to outside diameter.
    Slitter machine is divided the whole material roll to many coils.It is required that the tension shall be correctly controlled,and this is the guarantee for the extension of product rate and transverse uniformity.