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

Applications

Profiling Pocketing Shoulder milling R Face milling Slotting R Hole enlarging

Features

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

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LNMX-HJ/LNMX-HL

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

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Main Grades

AH8015

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

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AH3225

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

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AH3135

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

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Cutter bodies

Shank type

EXLN (ø20 – ø40 mm)

Cylindrical type holder for radius or high-feed milling

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Modular Type

HXLN (ø20 – ø32 mm)

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

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Bore type

TXLN (ø40 – ø63 mm)

Bore type for radius or high-feed milling

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Practical examples

Example #1

General Engineering

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

Example #2

Die and Mold Industry

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

Example #3

Power Generation Industry

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

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
Low carbon steel S15C, SS400, etc. C15, C20, etc.		– 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
Prehardened steelPrehardened steel NAK80, PX5, etc.		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
Grey cast iron FC250, FC300, etc. 250, 300, etc.		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
Ductile cast iron FCD400, etc. 400-15, 600-3, etc.		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
Titanium alloy Ti-6AI-4V, etc.		–	Fracture resistance	AH3135	MJ	30 – 60	0.15 – 0.6
Superalloys Inconel718, etc.		–	First choice	AH8015	MJ	20 – 50	0.05 – 0.3
Superalloys Inconel718, etc.		–	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
	SKD61, etc.SKD61, etc. X40CrMoV5-1, etc.	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

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		0.5 – 1.3
			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		0.5 – 1.3
			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		0.4 – 1
			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
		– 200HB	Fracture resistance	AH3135	HJ	100 – 200	0.3 – 0.9
Martensitic Stainless steel SUS410, SUS420J1, etc.SUS410, SUS420J1, etc. X12Cr13, X20Cr13, etc.		– 200HB	First choice	AH3135	HL	100 – 300	0.3 – 0.9
		– 200HB	Fracture resistance	AH3135	HJ	100 – 300	0.3 – 0.9
Grey cast iron FC250, FC300, etc. 250, 300, etc.		150 – 250HB	First choice	AH120	HJ	100 – 300	0.5 – 1.3
Grey cast iron FC250, FC300, etc. 250, 300, etc.		150 – 250HB	Fracture resistance	AH3225	HJ	100 – 300	0.5 – 1.3
Ductile cast iron FCD400, etc. 400-15, 600-3, etc.		150 – 250HB	First choice	AH120	HJ	80 – 250	0.5 – 1.3
Ductile cast iron FCD400, etc. 400-15, 600-3, etc.		150 – 250HB	Fracture resistance	AH3225	HJ	80 – 250	0.5 – 1.3
Titanium alloy Ti-6AI-4V, etc.		150 – 250HB	First choice	AH3135	HL	30 – 60	0.3 – 0.7
Titanium alloy Ti-6AI-4V, etc.		150 – 250HB	Fracture resistance	AH3135	HJ	30 – 60	0.3 – 0.7
Superalloys Inconel718, etc.		150 – 250HB	First choice	AH8015	HL	20 – 50	0.1 – 0.3
Superalloys Inconel718, etc.		150 – 250HB	Fracture resistance	AH8015	HJ	20 – 50	0.1 – 0.3
Hardened steel	SKD61, etc.SKD61, etc. X40CrMoV5-1, etc.	40 – 50HRC	First choice	AH3225	HJ	50 – 150	0.1 – 0.5
	SKD61, etc.SKD61, etc. X40CrMoV5-1, etc.	40 – 50HRC	Wear resistance	AH8015	HJ	50 – 150	0.1 – 0.5
	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

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
		– 300HB	Wear resistance	AH8015	HJ	100 – 300	0.3 – 1.1
Carbon steel, Alloy steel S55C, SCM440, etc.S55C, SCM440, etc. C55, 42CrMoS4, etc.		– 300HB	First choice	AH3225	HJ	100 – 250	0.3 – 1.1
		– 300HB	Wear resistance	AH8015	HJ	100 – 250	0.3 – 1.1
Prehardened steel NAK80, PX5, etc.		30 – 40HRC	First choice	AH3225	HJ	100 – 200	0.2 – 0.7
Prehardened steel NAK80, PX5, etc.		30 – 40HRC	Wear resistance	AH8015	HJ	100 – 200	0.2 – 0.7
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
		– 200HB	First choice	AH3135	HJ	100 – 200	0.2 – 0.7
Martensitic Stainless steel SUS410, SUS420J1, etc.SUS410, SUS420J1, etc. X12Cr13, X20Cr13, etc.		– 200HB	First choice	AH3135	HJ	100 – 300	0.2 – 0.7
		– 200HB	Fracture resistance	AH3135	HJ	100 – 300	0.2 – 0.7
Grey cast iron FC250, FC300, etc. 250, 300, etc.		150 – 250HB	First choice	AH120	HJ	100 – 300	0.3 – 1.1
Grey cast iron FC250, FC300, etc. 250, 300, etc.		150 – 250HB	Fracture resistance	AH3225	HJ	100 – 300	0.3 – 1.1
Ductile cast iron FCD400, etc. 400-15, 600-3, etc.		150 – 250HB	First choice	AH120	HJ	80 – 250	0.3 – 1.1
Ductile cast iron FCD400, etc. 400-15, 600-3, etc.		150 – 250HB	First choice	AH3225	HJ	80 – 250	0.3 – 1.1
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
	SKD61, etc.SKD61, etc. X40CrMoV5-1, etc.	40 – 50HRC	Wear resistance	AH8015	HJ	50 – 150	0.1 – 0.3
	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.

For more information about this product, visit our online e-catalog or download the product report:

e-Catalog	Metric \| Imperial
PDF	Metric \| Imperial

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

Applications & Features

Applications

Features

1. Multi-functional cutter body with superior reliability

2. High-feed insert with greater depth of cut

3. Radius insert with high reliability

Inserts & Grades

Inserts

LNMX-MJ/LNMX-ML

LNMX-HJ/LNMX-HL

Main Grades

AH8015

AH3225

AH3135

Cutter bodies

Shank type

EXLN (ø20 – ø40 mm)

Modular Type

HXLN (ø20 – ø32 mm)

Bore type

TXLN (ø40 – ø63 mm)

Practical examples

Example #1

General Engineering

Example #2

Die and Mold Industry

Example #3

Power Generation Industry

Standard cutting conditions

LNMX**-MJ/ML

LNMX04-HJ/HL

LNMX06-HJ

Related News

Tungaloy Adds Latest Grades, Geometry and Cutter Bodies to DoTwist-Ball for Profiling Stainless Steel

Tungaloy Expands Cutter Diameter Lineup of DoTwistBall Copy Mill Series

Tungaloy to Enhance Its DoTwistBall Profile Milling Cutters to Increase Insert Lineup

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