Fast Step Expanders – Mechanical-Hydraulic Expansion

General Information

With quick closure (quick adjustment option forward and backward). With built-in return spring for the expanding mandrel, hence quick release. Equipped with a mandrel catch, hence mandrel nut and washer are dispensed with. Rolls with double- sided parabola.

The speed of this tube expander can be significantly further increased by the use of our expansion controller with automatic clockwise and anticlockwise rotation. The overlapping of the individual rolling steps takes place automatically, hence complete rolling of each tube over the entire tube sheet thickness, independent of the number of consecutive rolling steps. Correction of the rolling length is possible by means of an additional built-in fine adjuster. Considerable shortening of non-productive times between individual rolling steps. All individual parts easily replaceable. Time savings of over 50% are possible.