DoTwistBall

product_Milling_DoTwistBall

Radius cutter for 3-dimensional machining due to helical cutting edges

Unique twisted insert geometries assures secure insert clamping for high stability
Two types of inserts fit one cutter: radius and high efficiency inserts

Applications & Features

High feedProfilingPocketingShoulder milling RFace millingSlotting RHole enlarging

1. Multi-functional cutter body with superior reliability

• Two types of inserts fit one cutter: radius and high efficiency inserts.
• Secure insert clamping to prevent insert from moving during machining.

2. High-feed insert with greater depth of cut

• Smooth chip control enables stable machining.

 

3. Radius insert with high reliability

• Insert cross section is designed to be 2 times as large as that of a round insert.
• Excellent chip evacuation in various applications.

Inserts & Grades

Inserts

LNMX-MJ/LNMX-ML

  • Radius insert
  • Maximum depth of cut
    – LNMU04: 4.0 mm
    – LNMU05: 5.0 mm
    – LNMU06: 6.0 mm

LNMX-HJ/LNMX-HL

  • For High-feed machining
  • Maximum depth of cut
    – LNMX04: 1.3 mm
    – LNMX06: 2 mm
Main Grades

AH8015

  • Good balance between wear and fracture resistance
  • First choice for machining heat-resistant alloy under general cutting conditions

AH3225

  • Good balance between wear and fracture resistance
  • Suitable for steel and stainless steel

AH3135

  • High fracture resistance
  • Suitable for machining steel and stainless steel under general cutting conditions

Cutter bodies

Shank type

EXLN (ø20 – ø40 mm)

Cylindrical type holder for radius or high-feed milling

Modular Type

HXLN (ø20 – ø32 mm)

Modular head (TungFlex) for radius or high-feed milling

Bore type

TXLN (ø40 – ø63 mm)

Bore type for radius or high-feed milling

Practical examples

Part: Fixture part
Material: SUS304
Cutter: EXLN04M025C25.0R03 ( ø25, z = 3)
Insert: LNMX0405R4-MJ
Grade: AH3135
Cutting conditions: Vc = 220 ← 120 (m/min)
fz = 0.4 ← 0.1 (mm/t)
Vf = 3360 ← 535 (mm/min)
ap = 3.5 ← 3 (mm)
ae = 15 (mm)
Application: Shoulder milling
Coolant: External supply
Machine: Vertical M/C
Part: Slide core
Material: NAK80 (40HRC)
Cutter: EXLN04M025C25.0R03 ( ø25, z = 3)
Insert: LNMX0405R4-MJ
Grade: AH3135
Cutting conditions: Vc = 150 (m/min)
fz = 0.3 ← 0.15 (mm/t)
Vf = 1720 ← 573 (mm/min)
ap = 4 ← 5 (mm)
ae = 7 ← 5 (mm)
Application: Shoulder milling
Coolant: External supply
Machine: Vertical M/C
Part: Turbine blade
Material: 13Cr-Mo stainless steel
Cutter: EXLN04M032C32.0R04 (ø32, z = 4)
Insert: LNMX0405R4-MJ
Grade: AH3135
Cutting conditions: Vc = 220 (m/min)
fz = 0.30  (mm/t)
Vf = 2,626 (mm/min)
ap = 1.0 (mm)
Application: Profile milling
Coolant: Dry
Machine: Turning center

Standard cutting conditions

LNMX**-MJ/ML
ISO Workpiece material Hardness Priority Grade Chip-
breaker
Cutting speed
Vc (m/min)
Feed per tooth
fz (mm/t)
Low carbon steel
S15C, SS400, etc. C15, C20, etc.
– 200 HB First choice AH3225 MJ 100 – 300 0.2 – 0.6
– 200 HB Low cutting force AH3135 ML 100 – 300 0.2 – 0.6
Carbon steel, Alloy steel
S55C, SCM440, etc. C55, 42CrMoS4, etc.
– 300 HB First choice AH3225 MJ 100 – 250 0.2 – 0.6
– 300 HB Low cutting force AH3135 ML 100 – 250 0.2 – 0.6
Prehardened steelPrehardened steel
NAK80, PX5, etc.
30 – 40 HRC First choice AH3225 MJ 100 – 200 0.15 – 0.4
30 – 40 HRC Low cutting force AH3135 ML 100 – 200 0.15 – 0.4
Austenitic Stainless steel
SUS304, SUS304, etc. X5CrNi18-9, X5CrNiMo17-12-2, etc.
– 200 HB First choice AH3135 MJ 100 – 200 0.2 – 0.6
– 200 HB Low cutting force AH3135 ML 100 – 200 0.2 – 0.6
Martensitic Stainless steel
SUS410, SUS420J1, etc. X12Cr13, X20Cr13, etc.
– 200 HB First choice AH3135 ML 100 – 300 0.2 – 0.6
– 200 HB Fracture resistance AH3135 MJ 100 – 300 0.2 – 0.6
Grey cast iron
FC250, FC300, etc. 250, 300, etc.
150 – 250 HB First choice AH120 MJ 100 – 300 0.2 – 0.6
150 – 250 HB Fracture resistance AH3225 MJ 100 – 300 0.2 – 0.6
Ductile cast iron
FCD400, etc. 400-15, 600-3, etc.
150 – 250 HB First choice AH120 MJ 80 – 250 0.2 – 0.6
150 – 250 HB Fracture resistance AH3225 MJ 80 – 250 0.2 – 0.6
Titanium alloy Ti-6AI-4V, etc. First choice AH3135 ML 30 – 60 0.15 – 0.6
Fracture resistance AH3135 MJ 30 – 60 0.15 – 0.6
Superalloys
Inconel718, etc.
First choice AH8015 MJ 20 – 50 0.05 – 0.3
Low cutting force AH120 ML 20 – 50 0.05 – 0.3
Hardened steel SKD61, etc.SKD61, etc.
X40CrMoV5-1, etc.
40 – 50 HRC First choice AH3225 MJ 50 – 150 0.1 – 0.3
40 – 50 HRC Wear resistance AH8015 MJ 50 – 150 0.1 – 0.3
SKD11, etc. X153CrMoV12, etc. 50 – 60 HRC First choice AH8015 MJ 50 – 70 0.05 – 0.15
  • When using a long shank or modular head with long overhang, please lower the cutting conditions (Vc, fz, ap) to 70% of the maximum conditions for the standard shank.
LNMX04-HJ/HL
ISO Workpiece material Hardness Priority Grade Chip-
breaker
Cutting speed
Vc (m/min)
Feed per tooth
fz (mm/t)
Low carbon steel
S15C, SS400, etc.S15C, SS400, etc.
C15, C20, etc.
– 300HB First choice AH3225 HJ 100 – 300 0.5 – 1.3
Wear resistance AH8015 HJ
Low cutting force AH3225 HL 0.4 – 1
Carbon steel, Alloy steel
S55C, SCM440, etc.S55C, SCM440, etc.
C55, 42CrMoS4, etc.
– 300HB First choice AH3225 HJ 100 – 250 0.5 – 1.3
Wear resistance AH8015 HJ
Low cutting force AH3225 HL 0.4 – 1
Prehardened steel
NAK80, PX5, etc.
30 – 40HRC First choice AH3225 HJ 100 – 200 0.4 – 1
Wear resistance AH8015 HJ
Low cutting force AH3225 HL 0.2 – 0.8
Austenitic Stainless steel
SUS304, SUS304, etc.SUS304, SUS304, etc.
X5CrNi18-9, X5CrNiMo17-12-2, etc.
– 200HB First choice AH3135 HL 100 – 200 0.3 – 0.9
Fracture resistance HJ
Martensitic Stainless steel
SUS410, SUS420J1, etc.SUS410, SUS420J1, etc.
X12Cr13, X20Cr13, etc.
– 200HB First choice AH3135 HL 100 – 300 0.3 – 0.9
Fracture resistance HJ
Grey cast iron
FC250, FC300, etc. 250, 300, etc.
150 – 250HB First choice AH120 HJ 100 – 300 0.5 – 1.3
Fracture resistance AH3225
Ductile cast iron
FCD400, etc. 400-15, 600-3, etc.
150 – 250HB First choice AH120 HJ 80 – 250 0.5 – 1.3
Fracture resistance AH3225
Titanium alloy
Ti-6AI-4V, etc.
150 – 250HB First choice AH3135 HL 30 – 60 0.3 – 0.7
Fracture resistance HJ
Superalloys
Inconel718, etc.
150 – 250HB First choice AH8015 HL 20 – 50 0.1 – 0.3
Fracture resistance HJ
Hardened steel SKD61, etc.SKD61, etc.
X40CrMoV5-1, etc.
40 – 50HRC First choice AH3225 HJ 50 – 150 0.1 – 0.5
Wear resistance AH8015
SKD11, etc.SKD11, etc.
X153CrMoV12, etc.
50 – 60HRC First choice AH8015 HJ 50 – 70 0.05 – 0.2
  • When using a long shank or modular head with long overhang, please lower the cutting conditions (Vc, fz, ap) to 70% of the maximum conditions for the standard shank.
LNMX06-HJ
ISO Workpiece material Hardness Priority Grade Chip-
breaker
Cutting speed
Vc (m/min)
Feed per tooth
fz (mm/t)
lLow carbon steel
S15C, SS400, etc.S15C, SS400, etc.
C15, C20, etc.
– 300HB First choice AH3225 HJ 100 – 300 0.3 – 1.1
Wear resistance AH8015
Carbon steel, Alloy steel
S55C, SCM440, etc.S55C, SCM440, etc.
C55, 42CrMoS4, etc.
– 300HB First choice AH3225 HJ 100 – 250 0.3 – 1.1
Wear resistance AH8015
Prehardened steel
NAK80, PX5, etc.
30 – 40HRC First choice AH3225 HJ 100 – 200 0.2 – 0.7
Wear resistance AH8015
Austenitic Stainless steel
SUS304, SUS304, etc.SUS304, SUS304, etc.
X5CrNi18-9, X5CrNiMo17-12-2, etc.
– 200HB First choice AH3135 HJ 100 – 200 0.2 – 0.7
First choice
Martensitic Stainless steel
SUS410, SUS420J1, etc.SUS410, SUS420J1, etc.
X12Cr13, X20Cr13, etc.
– 200HB First choice AH3135 HJ 100 – 300 0.2 – 0.7
Fracture resistance
Grey cast iron
FC250, FC300, etc. 250, 300, etc.
150 – 250HB First choice AH120 HJ 100 – 300 0.3 – 1.1
Fracture resistance AH3225
Ductile cast iron
FCD400, etc. 400-15, 600-3, etc.
150 – 250HB First choice AH120 HJ 80 – 250 0.3 – 1.1
First choice AH3225
Titanium alloy
Ti-6AI-4V, etc.
150 – 250HB First choice AH3135 HJ 30 – 60 0.15 – 0.6
Superalloys
Inconel718, etc.
150 – 250HB Wear resistance AH8015 HJ 20 – 50 0.05 – 0.3
Hardened steel SKD61, etc.SKD61, etc.
X40CrMoV5-1, etc.
40 – 50HRC First choice AH3225 HJ 50 – 150 0.1 – 0.3
Wear resistance AH8015
SKD11, etc.SKD11, etc.
X153CrMoV12, etc.
50 – 60HRC First choice AH8015 HJ 50 – 70 0.05 – 0.15
  • When using a long shank or modular head with long overhang, please lower the cutting conditions (Vc, fz, ap) to 70% of the maximum conditions for the standard shank.

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