MiniMill 301LP

Recommended for: tube facing and trimming, seal weld removal

KRAIS Tube Expanders

The fastest and strongest facing machine on the market. Engineered for safety and ease of use, featuring a pneumatic locking system with a double piston cylinder. Compact milling head with double cutting edge inserts with 6% cobalt. For all types of material including: ferrous, nonferrous, stainless and exotic alloys steel, duplex, inconel and titanium.

Standard working range

LOCKING RANGE (ID) FEED STROKE
12,5 – 38,0 mm 12,5 – 23,0 mm
0,492 – 1,500” 0,492 – 0,900”

Motor parameters

APPLICATION RANGE FREE SPEED POWER TORQUE
20 mm 0,787” 300 Rpm 1,3 Hp 43 Nm 32 Ft.Lbs
Air use: 55 cfm 1,3
m3/min
Body width: 2,32” 59 mm
Body height: 13,1” 335 mm Body weight: 15,4 Lbs 7 kg

Standard set up

KRAIS Tube Expanders

MINISHAFT

A system with interchangeable guide shafts. A complete set covers 12,4 to 48,0 mm ID tubes.

KRAIS Tube Expanders

60 MM (2,36”)

The smallest cutter head, designed to fasten the wide range of cutting inserts.

Locking ranges with standard set up

SHAFT: MINISHAFT

RANGE [MM] RANGE [INCH] JAWS NR
MIN MAX MIN MAX
12,40 14,50 0,488 0,571 201 MM#36
13,90 16,00 0,547 0,630 203 MM#36
15,90 18,00 0,626 0,709 205 MM#36
16,90 19,00 0,665 0,748 207 MM#36
18,90 21,00 0,744 0,827 209 MM#36
19,90 22,00 0,783 0,866 211 MM#36
20,90 23,00 0,823 0,906 213 MM#36
21,90 24,00 0,862 0,944 214 MM#36

Optional working range

LOCKING RANGE (ID) FEED STROKE
10 – 51 mm 10 – 48 mm
0,394 – 2,008” 0,394 – 1,890”

Optional heads

KRAIS Tube Expanders

TFMH

Tube facing milling head for tubes made of any type of material. Utilizes 6% cobalt inserts.

Go to datasheet.

KRAIS Tube Expanders

MMFH

Head dedicated for strength weld removal. Heads are easy to align and sized per tube diameter.

Go to datasheet.

KRAIS Tube Expanders

STWRMH

Tube facing milling head for tubes made of hardest type of materials. Utilizes carbide inserts with 4 blades

Go to datasheet.

Optional shafts

KRAIS Tube Expanders

MICROSHAFT

A system with interchangeable guide shafts. A complete set covers 9,0 to 15,0 mm inside diameter.

KRAIS Tube Expanders

SHAFT 20

Redesigned heavy duty locking system. Shafts and jaws are longer and wider to ensure maximum clamping force. The jaws are self-align.

Additional accesories

KRAIS Tube Expanders

SPEED REDUCER

Easy to use gearbox for 3x speed reduction. Increases the torque, enabling the machine to generate a thick chip whilst reducing the cutting time.

KRAIS Tube Expanders

SEED 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.

Locking range with optional jaws

SHAFT: SHAFT20

RANGE [MM] RANGE [INCH] JAWS EXT. SPRING
MIN MAX MIN MAX NUMBER QTY.
20 24 0,787 0,945 NS-0 SP-19 1
24 28 0,945 1,102 NS-1 SP-19 1
28 33 1,102 1,299 NS-2 SP-19 1
33 38 1,299 1,496 NS-3 SP-20 2
38 43 1,496 1,693 NS-4 SP-20 2
43 48 1,693 1,890 NS-5 SP-20 2

SHAFT: MINISHAFT (OPTIONAL RANGE)

RANGE [MM] RANGE [INCH] JAWS NR
MIN MAX MIN MAX
23,60 25,60 0,929 1,008 215 MM#36
25,20 27,20 0,992 1,071 217 MM#36
26,80 28,80 1,055 1,134 219 MM#36
28,40 30,40 1,118 1,197 221 MM#36
30,00 32,00 1,181 1,260 223 MM#36
31,60 33,60 1,244 1,323 225 MM#36
33,20 35,20 1,307 1,386 227 MM#36
34,80 36,80 1,370 1,449 229 MM#36
36,40 38,40 1,433 1,512 231 MM#36
38,00 40,00 1,496 1,575 233 MM#36
39,60 41,60 1,559 1,638 235 MM#36
41,20 43,20 1,622 1,701 237 MM#36
42,80 44,80 1,685 1,764 239 MM#36
44,40 46,40 1,748 1,827 241 MM#36
46,00 48,00 1,811 1,890 243 MM#36

SHAFT: MICROSHAFT

RANGE [MM] RANGE [INCH] JAWS NR
MIN MAX MIN MAX
10,00 11,00 0,394 0,433 301 MM#36
11,00 12,00 0,433 0,472 303 MM#36
12,00 13,00 0,472 0,512 305 MM#36
13,00 14,00 0,512 0,551 307 MM#36
14,00 15,00 0,551 0,591 309 MM#36

Example tool application