To provide a high-quality winding product with desired tension without changing a component, even when a tension level is changed according to a film thickness, which is capable of changing transmission torque from 0 torque and winding with low tension from start of winding.

In a friction shaft in which multi-thread belt-like sheet is wound around one winding shaft 1, when performing core chuck operation and torque transmission operation with a common air pressure, a torque transmission member 13 is pushed by a spring 15 to a direction in which the torque is reduced, to thereby prevent generation of torque until reaching a fixed air pressure or higher, which is higher than an air pressure necessary for the core chuck operation.