‘SB’ Type (Solid Body)
This expander is of an extremely robust construction incorporating a thrust collar in the form of a ‘bridge’. The purpose of this ‘bridge’ is to enable the expander to rest against the tube plate whilst accommodating the tube end, as this protrudes from the tube plate under the tensioning action of the expander. The tensioning of the tube minimises tube sag in horizontally tubed boilers. The ‘SB’ expander provides a fixed rolling length with either a parallel or slightly tapered expansion as required. The tool may be hand or power driven.
Description
This expander is of an extremely robust construction incorporating a thrust collar in the form of a ‘bridge’. The purpose of this ‘bridge’ is to enable the expander to rest against the tube plate whilst accommodating the tube end, as this protrudes from the tube plate under the tensioning action of the expander. The tensioning of the tube minimises tube sag in horizontally tubed boilers. The ‘SB’ expander provides a fixed rolling length with either a parallel or slightly tapered expansion as required. The tool may be hand or power driven.
Fitted with parallel rollers giving taper expansion.
Square head mandrels supplied.
Tools can also be supplied, fitted with taper rollers for parallel expansion.