Cooling Roll have hard chrome plated surface. Cooled water passing through its Rotary joint to cools the hard chrome plated surface area of the Roll. Cooling Roll cools the contact area that touches the web materials. There are different type Cooling Rolls like single shell, double shell jacketed type, spiral type. The surface cooling effect will be vary in different types cooling Rolls. Cooling Roll having shaft with inside hole to fix rotary joint. Bigger shaft diameter is recommended to avoid breakage of end shafts as end shaft having inside hole and uneven alignment or heavy tension on shaft result brakeage so bigger shaft diameter is recommended.