Tube Expanders Manufacturers in Mumbai , India

Sunex Engineering Company - Leading Condenser Tube Expanders Manufacturers in Mumbai, India.

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Condenser Tube Expanders from Sunex Engineers :

SUNEX Tube Expander consists of:

Mandrel – A Tapered pin through the centre to which the power is attached and when advanced pushes the rolls against the tube.
Rolls – A set of (3 or 5) of tapered cylindrical parts which are driven by mandrel and contact the tube wall to be expanded. The taper on the rolls is in the reverse direction and one-half the taper of the mandrel if it is a parallel roll expander
Cage – This is the expander body since it holds the mandrel and rolls in place. The slots which contain the rolls also provide expansion of the rolls.
Collar Thrust Assembly – This assembly attaches to the cage and allows adjustment of the expanding depth. The thrust collar will remain stationary against the tube sheet or tube end while the cage, mandrel and rolls expand the tube. The thrust assembly is used on condenser or heat exchanger expanders, some furnace expanders and special boiler expander.

To select the correct tube expander the following information is required

Tube OD
Tube wall thickness or BWG
Tube sheet thickness
Tube Material

S-900 series:-

OD Range – 1/4 - 3/8 inches
6.3 – 9.5 mm

Expander with ¾ in (19.0mm) long rolls will accommodate tube sheet thickness from ¼ in to ¾ in (6.3mm to 19.0mm)
Expander with 1-1/4 in (31.7mm) long rolls will accommodate tube sheet thickness from ¾ in to 1.1/4 in (19.0mm to 1.7mm)
These expanders will accommodate a wide range of tube sheet thickness.

S-1300 Series

O.D. Range - 3/8 inches
9.5 mm

Expander with ¾ in (19.0mm) long rolls will accommodate tube sheet thickness from ¼ in to ¾ in (6.3mm to 19.0mm)
Expander with 1-1/4 in (31.7mm) long rolls will accommodate tube sheet thickness from ¾ in to 1.1/4 in (19.0mm to 31.7mm)
These expanders will accommodate a wide range of tube sheet thickness.

S-800 Series – 3 Roll
O.D. Range – ½ in – 1.½ inches
12.7 mm – 38.1 mm

Expanders with 1.½ in.(38.1mm) long rolls will accommodate tube sheet thickness of ½ in to 1.½ in.(12.7 – 38.1mm).
Expanders with 2.¼ in.(57.1mm) long rolls will accommodate tube sheet thickness of 1.¼ in to 2.¼ in.(12.7 – 38.1mm).
Thrust collar is reversible. One expander allows flush and 1/8 in recess tube rolling.

S-800-5 Series – 5 Roll
O.D. Range – 5/8 in – 1.½ inches
15.8 mm – 38.1 mm

Expanders with 1.½ in.(38.1mm) long rolls will accommodate tube sheet thickness of ½ in to 1.½ in.(12.7 – 38.1mm).
Expanders with 2.¼ in.(57.1mm) long rolls will accommodate tube sheet thickness of 1.¼ in to 2.¼ in.(12.7 – 38.1mm).
Sunex five roll expander should be fitted with a thin wall thrust collar when being to roll tubing with 19 BWG (0.035” / 0.9mm) to 22 BWG (0.028” / 0.71mm).
Gives a more concentric and even expansion when expanding thin walled tube vs. a conventional 3 roll expander.

Tube Expanders Mumbai

S-1200 Series – 3 Roll
O.D. Range – ½ in – 1.½ inches
12.7 mm – 38.1 mm

Expanders with 1.½ in.(38.1mm) long rolls will accommodate tube sheet thickness as follows:

STD REACH 1.½ in –   6 in   (38.1mm – 152.4mm)
“A” REACH    1.½ in –   8 in   (38.1mm – 203.2mm)
“B” REACH    1.½ in – 10 in   (38.1mm – 253.8mm)
“C” REACH    1.½ in – 12 in   (38.1mm – 304.6mm)

Expanders with 2.¼ in.(57.1mm) long rolls will accommodate tube sheet thickness as follows:

STD REACH 2.¼   in –   6.3/4 in   (38.1mm – 171.4mm)
“A” REACH    2.¼   in –   8.3/4 in   (38.1mm – 222.1mm)
“B” REACH    2.¼   in – 10.3/4 in   (38.1mm – 272.8mm)
“C” REACH    2.¼   in – 12.3/4 in   (38.1mm – 323.6mm)

Thrust collar is reversible. One expander allows flush and 1/8 in recess tube rolling.

S-1200-5 Series – 5 Roll
O.D. Range – ¾ in – 1.½ inches
19.1 mm – 38.1 mm

Expanders with 1.½ in.(38.1mm) long rolls will accommodate tube sheet thickness as follows:

Expanders with 2.¼ in.(57.1mm) long rolls will accommodate tube sheet thickness as follows:

Thrust collar is reversible. One expander allows flush and 1/8 in recess tube rolling.

S-8012 Series
O.D. Range – 1.¾ in – 5 inches
44.4 mm – 127 mm

Expanders with 2.¼ in.(57.1mm) long rolls will accommodate tube sheet thickness as follows:

STD REACH ½ in –   4 in   (12.7mm – 101.4mm).
½ in –   6 in   (12.7mm – 152.4mm).
½ in –   8 in   (12.7mm – 203.2mm).