FinMill

KRAIS Tube Expanders

KRAIS FinMill is a air powered tool designed for removing fin from the outside diameter of a tube. The tool is based on the same quality drive and housing as our other PrepMill series tools. Thanks to heavy duty locking system The FinMill fin tube removal tool clamps reliably in the tube and offers chatter-free work at any position.

Standard working range

APPLICATION RANGE STANDARD LOCKING
25 - 127 mm 25 - 122 mm
0,984 - 5,000” 0,984 - 4,803””

Motor parameters

FEED STROKE FREE SPEED POWER TORQUE
40 mm 1,6” 55 Rpm 1,3 Hp 140 Nm 105 Ft.Lbs
Air use: 75 cfm 2,2 m3/min Body width: 2,59” 66 mm
Body height: 14,5” 370 mm Body weight: 19 Lbs 9 kg

Standard set up

KRAIS Tube Expanders

SHAFT25

Self-align, heavy duty locking system. Shafts and jaws are longer and wider to ensure maximum clamping force.

KRAIS Tube Expanders

DOUBLE SIDE HEAD

Special shaped head, allows to remove left- and right-handed fins.

Locking ranges with standard set up

SHAFT: SHAFT25

RANGE [MM] RANGE [INCH] JAWS EXT. SPRING
MIN MAX MIN MAX NR QTY.
25 30 0,984 1,181 NS-1 SP-24 1
30 35 1,181 1,378 NS-2 SP-24 1
35 40 1,378 1,575 NS-3 SP-25 2
40 45 1,575 1,772 NS-4 SP-25 2
45 50 1,772 1,969 NS-5 SP-25 2
50 55 1,969 2,165 NS-6 SP-25 2
55 60 2,165 2,362 NS-7 SP-25 2
60 65 2,362 2,559 NS-8 SP-25 2
62 67 2,441 2,638 NS-5 NS-10 SP-25 2
67 72 2,638 2,835 NS-6 NS-10 SP-25 2
72 77 2,835 3,031 NS-7 NS-10 SP-25 2
77 82 3,031 3,228 NS-8 NS-10 SP-25 2
82 87 3,228 3,425 NS-5 NS-20 SP-25 2
87 92 3,425 3,622 NS-6 NS-20 SP-25 2
92 97 3,622 3,819 NS-7 NS-20 SP-25 2
97 102 3,819 4,016 NS-8 NS-20 SP-25 2
102 107 4,016 4,213 NS-5 NS-30 SP-25 2
107 112 4,213 4,409 NS-6 NS-30 SP-25 2
112 117 4,409 4,606 NS-7 NS-30 SP-25 2
117 122 4,606 4,803 NS-8 NS-30 SP-25 2

Other optional accessories

KRAIS Tube Expanders

SPEED ADJUSTMENT VALVE SAV-500

The solution for all pneumatic drove beveling machines. Allows adjusting cutting speed to suit to the machined tube diameter.

KRAIS Tube Expanders

STAR WHEEL

The most precise feed system. Used in many basic and demanding applications.

Tool in action

Removes 4.0” (101 mm) depth of fin from the tube OD in less than 2 minutes