To enable a spindle movement with high reliability even when winding at a low speed a metallic band with a very high temperature from continuous casting equipment.

This coiler spindle is constituted so that the belt-like product is wound at the outlet of a continuous casting machine. This coiler spindle is equipped with one set of adjacent segments arranged around a rotating center shaft 1, and these segments are movable in the radial direction by receiving the actions of means 4, 5, 6 for controlling the expansion and the storage of the spindle. The spindle M is equipped with a device for cooling a cylindrical winding surfaces S. In this device, an independent cooling system 18 having inlet opening and outlet opening, is included inside each segment 3. These openings are connected, through extendable connecting means J, 33, to the two chambers respectively, namely to the supply chamber and to the discharge chamber of a fluid box 35 fixed on the shaft 1 in a free space, which is arranged between the segments 3.