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3-Roll Boiler Tube Expander, Self-Feeding, Flaring (Series 28)

SKU: N/A

Wilson’s Series 28 Expanders simultaneously flare the tube as a preliminary to beading operations. The revolving thrust collar sets the tube and is notched to clear adjacent tubes if on close centers and works well in most HRT and other fire tube boilers. These Wilson Expanders are also popular for far end rolling when used in conjunction with reverse mandrels and extension drives. The expander range is taken at the front of the thrust collar.

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TubeAssembly
with Mandrel
Part No.
SparesReverse Taper MandrelExpansion
Range*
Inches
ODWallStandard MandrelRoll Set Part No.
Inches(mm)GA(mm)Part No.SquarePart No.Square
Inch(mm)Inch(mm)
2(50.8)10-16(3.4-1.7)35004350243/4(19.1)35037207661/2(12.7)1.687-2.000
2-1/2(63.5)350083502635040207693/4(19.1)2.156-2.500
3(76.2)35012350281(25.4)35043207721(25.4)2.625-3.000

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