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Boiler Expander-PZ Series



Boiler Expander-PZ Series


Key Features

Three Expansion Rolls, Self feeding tube expanders. An excellent expander for re-rolling leaky tubes and for new constructions of water tube boilers, fire tube boilers, economizers and air heaters. Expanders with 4, 5 and 7 rolls are available on request. Our K70’s right-angle rolling motors are recommended to be used with this expanders.

If you order expander KS-54 with rolls of 50 mm you should specify KS-5450, with 60 mm KS-5460… Short mandrel set with shorter length on request.

For this expanders there are available special bottle type rolls which reduce the effective roll length. Max. for 10 mm from the front of the roll.


Recommended roll length for varies tube sheet thickness:

Tube Sheet Thickness

Roll Length

1/2” - 3/4” (12mm - 19mm)

40

7/8” - 1-1/4” (22mm - 32mm)

50

1-3/8” - 1-3/4” (35mm - 45mm)

60

1-7/8” - 2-1/4” (48mm - 58mm)

80

2-3/8” - 2-3/4” (60mm - 70mm)

90












 

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