Three rolls, Self-feeding adjustable reach tube expander for deep reach expansion. Parallel rolling with long effective double radius rolls. Rolls are self-retained in the cage. An excellent expander for use as a touch-up expansion as well as a hard rolling and re-rolling a leaky tube and for new constructions of Water Tube Boilers, Fire-Tube Boilers, Economizers, Air Heaters. Expanders with 4, 5 rolls, with long rolls or longer reach with 2-inch increments are available on request.
Our K70’s Right Angle Rolling Motors are recommended to be used with this expanders.