DeepTri-Drill

Indexable gun drill with exceptional efficiency

DeepTri-Drill, the easy-to-handle, indexable gundrill series, delivers outstanding performance, exceptional efficiency and stability in deep hole drilling

Applications & Features

Applications

Small-diameter drilling

Features

1. Wide range of options for various deep hole applications

2. Ultimate efficiency

• Unique chip breaker and chip splitter on the cutting edge enables impressive chip control at any feed rate, especially at higher feeds
• Thanks to smooth chip evacuation, deep hole making (drilling) is possible even with a standard coolant pressure of 1-2 MPa (145-290 psi)

3. Excellent roundness, straightness, and surface finish

• Special cutting edge geometry and optimized guide pads provide exceptional hole quality.

Inserts & Grades

Inserts

TOHT-NDJ/NDL

3 cutting edges inserts with chip splitter

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LOGT-NDJ

2 cutting edges inserts with chip splitter

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ZSGT-NDJ

Single sided insert with chip splitter

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FBM/FBH

Optimized chip breaker design for deep hole drilling

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Guide pad

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Main Grades

AH9130

P15 – P35 / M25 – M35 / K10 – K25 / S15 – S30
High wear resistance
Designed for drilling various materials

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AH725

P15 – P30 / M15 – M30 / K25 – K30 / S15 – S25
Good balance between wear and chipping resistance
Suitable for machining steel and stainless steel under general cutting conditions

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FH3125 (For guide pads)

First recommendation
Long tool life due to unique substrate and coating

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FH3135 (For guide pads)

High fracture resistance
First choice when using water-soluble coolant

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Drill bodies

General Drilling

MCTR (ø10 – ø40 mm)

• For lathes and machining centers
• L/D = 8 – 45

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Gun Drill

TRLG (ø12 – ø30 mm)

• For gun drill machines

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Practical examples

Example #1

Heat Exchanger Industry

Part:	Tube Sheet
Material:	SUS304 / X5CrNi18-9
Drill:	MCTR20.00XM32-10
Insert:	TOHT090305R-NDL
Grade:	AH725
Cutting conditions:	Vc = 80 (m/min) f = 0.04 (mm/rev) Vf = 53 (mm/min) H = 200 (mm) Coolant: Wet Machine: Horizontal M/C

Example #2

Die and Mold Industry

Part:	Plastic mold
Material:	SKD61 / X40CrMoV5-1 (45 HRC)
Drill:	TRLGCH18.00X1500-36A
Insert:	TOHT080305R-NDJ
Grade:	AH725
Cutting conditions:	Vc = 62 (m/min) f = 0.04 (mm/rev) Vf = 44 (mm/min) H = 700 (mm) Coolant: Wet Machine: Horizontal M/C

Example #3

Automotive Industry

Part:	Shaft
Material:	SCM420H
Drill:	MCTR12.00XM20-20
Insert:	LOGT060204R-NDJ
Grade:	AH725
Cutting conditions:	Vc = 150 (m/min) f = 0.13 (mm/rev) Vf = 517 (mm/min) øDc = 12 (mm) H = 233 (mm) Coolant: Wet Machine: Vertical M/C

Standard cutting conditions

ISO	Workpiece material	Priority	Chip-breaker	Cutting speed Vc (m/min)	Feed:f (mm/rev)
ISO	Workpiece material	Priority	Chip-breaker	Cutting speed Vc (m/min)	ø10 – ø11.8	ø12 – ø13.99	ø14 – ø18	ø18.01 – ø28	ø28.01 – ø40
	Low carbon steel (C < 0.3) SS400 / St42-1, SM490 / St52-3, S25C / C25, etc.	For low feed machines	NDL	50 – 100	–	–	0.03 – 0.1	0.03 – 0.1	–
		First choice	NDJ/G	80 – 140	0.05 – 0.08	0.05 – 0.1	0.05 – 0.1	0.05 – 0.1	0.1 – 0.2
	Carbon steel (C > 0.3) S45C / C45, S55C / C55, etc.	For low feed machines	NDL	50 – 100	–	–	0.03 – 0.1	0.03 – 0.12	–
	Carbon steel (C > 0.3) S45C / C45, S55C / C55, etc.	First choice	NDJ/G	80 – 140	0.05 – 0.14	0.05 – 0.16	0.05 – 0.16	0.05 – 0.2	0.1 – 0.2
	Low alloy steel (C < 0.3) SCM415, 18CrMo4, etc.	For low feed machines	NDL	50 – 100	–	–	0.03 – 0.1	0.03 – 0.1	–
	Low alloy steel (C < 0.3) SCM415, 18CrMo4, etc.	First choice	NDJ/G	80 – 140	0.05 – 0.08	0.05 – 0.1	0.05 – 0.1	0.05 – 0.1	0.1 – 0.2
	Alloy steel (C > 0.3) SCM440 / 42CrMo4, SCr420 / 20Cr4, etc.	For low feed machines	NDL	50 – 100	–	–	0.03 – 0.1	0.03 – 0.12	–
		First choice	NDJ/G	80 – 120	0.05 – 0.14	0.05 – 0.16	0.05 – 0.16	0.05 – 0.2	0.1 – 0.2
	Stainless steel (Austenitic) SUS304 / X5CrNi18-9, SUS316 / X5CrNiMo17-12-3, etc.	For low feed machines	NDL	50 – 100	–	–	0.03 – 0.06	0.03 – 0.06	–
		First choice	NDJ/G	60 – 100	0.05 – 0.08	0.05 – 0.1	0.05 – 0.1	0.05 – 0.1	0.1 – 0.15
	Stainless steel (Martensitic, Ferritic) SUS430 / X6Cr17, SUS416 / X12CrS13, etc.	For low feed machines	NDL	50 – 100	–	–	0.03 – 0.06	0.03 – 0.06	–
		First choice	NDJ/G	60 – 100	0.05 – 0.08	0.05 – 0.1	0.05 – 0.1	0.05 – 0.1	0.1 – 0.15
	Stainless steel (Precipitation hard- ening) SUS630 / X5CrNiCuNb16-4, etc.	For low feed machines	NDL	50 – 100	–	–	0.03 – 0.06	0.03 – 0.06	–
		First choice	NDJ/G	60 – 100	0.05 – 0.08	0.05 – 0.1	0.05 – 0.1	0.05 – 0.1	0.1 – 0.15
	Grey cast iron FC250 / GG25 / 250, etc.	For low feed machines	NDL	50 – 100	–	–	0.03 – 0.15	0.05 – 0.18	–
	Grey cast iron FC250 / GG25 / 250, etc.	First choice	NDJ/G	80 – 140	0.05 – 0.2	0.05 – 0.25	0.05 – 0.25	0.05 – 0.3	0.1 – 0.3
	Ductile cast iron FCD700 / 700-2, etc.	For low feed machines	NDL	50 – 100	–	–	0.03 – 0.15	0.05 – 0.18	–
	Ductile cast iron FCD700 / 700-2, etc.	First choice	NDJ/G	80 – 140	0.05 – 0.2	0.05 – 0.25	0.05 – 0.25	0.05 – 0.3	0.1 – 0.3
	Aluminium alloys	For low feed machines	NDL	80 – 160	–	–	0.03 – 0.15	0.03 – 0.15	–
	Aluminium alloys	First choice	NDJ/G	100 – 200	0.05 – 0.18	0.05 – 0.2	0.05 – 0.2	0.05 – 0.2	0.1 – 0.25
	Heat-resistant alloys Inconel 718, etc.	For low feed machines	NDL	20 – 50	–	–	0.03 – 0.06	0.03 – 0.08	–
	Heat-resistant alloys Inconel 718, etc.	First choice	NDJ/G	20 – 50	0.04 – 0.06	0.04 – 0.08	0.04 – 0.08	0.04 – 0.1	0.06 – 0.13
	Titanium alloys Ti-6Al-4V, etc.	For low feed machines	NDL	30 – 60	–	–	0.03 – 0.1	0.03 – 0.12	–
	Titanium alloys Ti-6Al-4V, etc.	First choice	NDJ/G	30 – 60	0.04 – 0.1	0.05 – 0.13	0.05 – 0.13	0.05 – 0.15	0.1 – 0.18
	Hardened steel ≥ 40HRC	For low feed machines	NDL	40 – 100	–	–	0.03 – 0.08	0.03 – 0.08	–
	Hardened steel ≥ 40HRC	First choice	NDJ/G	50 – 100	0.04 – 0.06	0.04 – 0.08	0.04 – 0.08	0.04 – 0.1	0.06 – 0.13