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DeepTri-Drill

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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

LOGT-NDJ

  • 2 cutting edges inserts with chip splitter

ZSGT-NDJ

  • Single sided insert with chip splitter

FBM/FBH

  • Optimized chip breaker design for deep hole drilling

Guide pad

Main Grades

AH9130

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

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

FH3125 (For guide pads)

  • First recommendation
  • Long tool life due to unique substrate and coating

FH3135 (For guide pads)

  • High fracture resistance
  • First choice when using water-soluble coolant

Drill bodies

General Drilling

MCTR (ø8 – ø40 mm)

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

Gun Drill

TRLG (ø12 – ø30 mm)

• For gun drill machines

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

Drill diameter: DC = ø7.94 – ø9.99 mm

ISO Workpiece material Chip-breaker Grade Cutting speed
Vc (m/min)		 Feedf (mm/rev)
Low carbon steel (C < 0.3)
SS400, SM490, S25C, etc.
E275A, C25, etc		 NDJ AH9130 60 – 100 0.05 – 0.08
Carbon steel (C > 0.3)
S45C, S55C, etc.
C45, C55, etc.		 NDJ AH9130 60 – 100 0.05 – 0.14
Low alloy steel (C < 0.3)
SCM415, 18CrMo4, etc.		 NDJ AH9130 60 – 100 0.05 – 0.08
Alloy steel (C > 0.3)
SCM440, SCr420,
42CrMo4, 20Cr4, etc.		 NDJ AH9130 60 – 100 0.05 – 0.14
* Stainless steel (Austenitic)
SUS304, SUS316, etc.
X5CrNi18-9, X5CrNiMo17-12-3, etc.		 NDJ AH9130 60 – 80 0.05 – 0.08
Stainless steel (Martensitic, Ferritic)
SUS430, SUS416, etc.
X6Cr17, X12CrS13, etc.		 NDJ AH9130 60 – 80 0.05 – 0.08
Stainless steel
(Precipitation hardening)
SUS630, X5CrNiCuNb16-4, etc.		 NDJ AH9130 60 – 80 0.05 – 0.08
Grey cast iron
FC250, GG25, 250, etc.		 NDJ AH9130 60 – 100 0.05 – 0.2
Ductile cast iron
FCD700, 700-2, etc.		 NDJ AH9130 60 – 100 0.05 – 0.2
Aluminium alloys NDJ AH9130 60 – 100 0.05 – 0.18
Heat-resistant alloys
Inconel 718, etc.		 NDJ AH9130 20 – 50 0.04 – 0.06
Titanium alloys
Ti-6Al-4V, etc.		 NDJ AH9130 30 – 60 0.04 – 0.1
Hardened steel
≥ 40HRC		 NDJ AH9130 20 – 50 0.04 – 0.06

*Coolant recommendations for drilling stainless steel:
– Oil coolant is first priority
– Water soluble coolant requires at least 20% oil concentration

Drill diameter: DC = ø10 – ø28 mm

ISO Workpiece material Priority Chip-breaker Grade Cutting speed
Vc (m/min)		 Feed:f (mm/rev)
ø10 – ø11.8 ø11.81 – ø13.99 ø14 – ø18 ø18.01 – ø28
Low carbon steel (C < 0.3)
SS400, SM490, S25C, etc.
E275A, C25, etc.		 Lower feed NDL AH725 50 – 100 – – 0.03 – 0.1 0.03 – 0.1
First choice NDJ AH9130 80 – 140 0.05 – 0.08 0.05 – 0.1 0.06 – 0.12 0.08 – 0.16
Carbon steel (C > 0.3)
S45C, S55C, etc.
C45, C55, etc.		 Lower feed NDL AH725 50 – 100 – – 0.03 – 0.1 0.03 – 0.12
First choice NDJ AH9130 80 – 140 0.05 – 0.14 0.05 – 0.16 0.07 – 0.18 0.08 – 0.2
Low alloy steel (C < 0.3)
SCM415, 18CrMo4, etc.		 Lower feed NDL AH725 50 – 100 – – 0.03 – 0.12 0.08 – 0.1
First choice NDJ AH9130 80 – 140 0.05 – 0.08 0.05 – 0.1 0.06 – 0.12 0.08 – 0.16
Alloy steel (C > 0.3)
SCM440, SCr420,
42CrMo4, 20Cr4, etc.		 Lower feed NDL AH725 50 – 100 – – 0.03 – 0.1 0.03 – 0.12
First choice NDJ AH9130 80 – 120 0.05 – 0.14 0.05 – 0.16 0.07 – 0.18 0.08 – 0.2
* Stainless steel (Austenitic)
SUS304, SUS316, etc.
X5CrNi18-9, X5CrNiMo17-12-3, etc.		 Lower feed NDL AH725 50 – 100 – – 0.03 – 0.06 0.03 – 0.06
First choice NDJ AH9130 60 – 100 0.05 – 0.08 0.05 – 0.1 0.05 – 0.1 0.05 – 0.12
Stainless steel (Martensitic, Ferritic)
SUS430, SUS416, etc.
X6Cr17, X12CrS13, etc.		 Lower feed NDL AH725 50 – 100 – – 0.03 – 0.06 0.03 – 0.06
First choice NDJ AH9130 60 – 100 0.05 – 0.08 0.05 – 0.1 0.05 – 0.1 0.05 – 0.12
Stainless steel
(Precipitation hardening)
SUS630, X5CrNiCuNb16-4, etc.		 Lower feed NDL AH725 50 – 100 – – 0.03 – 0.06 0.03 – 0.06
First choice NDJ AH9130 60 – 100 0.05 – 0.08 0.05 – 0.1 0.05 – 0.1 0.05 – 0.12
Grey cast iron
FC250, GG25, 250, etc.		 Lower feed NDL AH725 50 – 100 – – 0.03 – 0.15 0.05 – 0.18
First choice NDJ AH9130 80 – 140 0.05 – 0.2 0.05 – 0.25 0.05 – 0.25 0.05 – 0.3
Ductile cast iron
FCD700, 700-2, etc.		 Lower feed NDL AH725 50 – 100 – – 0.03 – 0.15 0.05 – 0.18
First choice NDJ AH9130 80 – 140 0.05 – 0.2 0.05 – 0.25 0.05 – 0.25 0.05 – 0.3
Aluminium alloys Lower feed NDL AH725 80 – 160 – – 0.03 – 0.15 0.03 – 0.15
First choice NDJ AH9130 100 – 200 0.05 – 0.18 0.05 – 0.2 0.08 – 0.22 0.1 – 0.25
Heat-resistant alloys
Inconel 718, etc.		 Lower feed NDL AH725 20 – 50 – – 0.03 – 0.06 0.03 – 0.08
First choice NDJ AH9130 20 – 50 0.04 – 0.06 0.04 – 0.08 0.04 – 0.08 0.04 – 0.1
Titanium alloys
Ti-6Al-4V, etc.		 Lower feed NDL AH725 30 – 60 – – 0.03 – 0.1 0.03 – 0.12
First choice NDJ AH9130 30 – 60 0.04 – 0.1 0.05 – 0.13 0.05 – 0.13 0.05 – 0.15
Hardened steel
≥ 40HRC		 Lower feed NDL AH725 40 – 100 – – 0.03 – 0.08 0.03 – 0.08
First choice NDJ AH9130 50 – 100 0.04 – 0.06 0.04 – 0.08 0.04 – 0.08 0.04 – 0.1

The use of NDL chipbreakers is recommended for cross hole drilling with low feed conditions.
*Coolant recommendations for drilling stainless steel:
– Oil coolant is first priority
– Water soluble coolant requires at least 20% oil concentration

Drill diameter: DC = ø28.01 – ø40 mm

ISO Workpiece material Priority For central For intermediate For peripheral Cutting speed
Vc (m/min)		 Feedf (mm/rev)
Chip-breaker Grade Chip-breaker Grade Chip-breaker Grade ø28.01 – ø40
Low carbon steel (C < 0.3)
SS400, SM490, S25C, etc.
E275A, C25, etc.		 Lower feed G AH725 DL AH725 G AH725 50 – 100 0.03 – 0.1
First choice G AH725 G AH725 G AH725 80 – 140 0.1 – 0.25
Carbon steel (C > 0.3)
S45C, S55C, etc.
C45, C55, etc.		 Lower feed G AH725 DL AH725 G AH725 50 – 100 0.03 – 0.12
First choice G AH725 G AH725 G AH725 80 – 140 0.1 – 0.3
Low alloy steel (C < 0.3)
SCM415, 18CrMo4, etc.		 Lower feed G AH725 DL AH725 G AH725 50 – 100 0.03 – 0.1
First choice G AH725 G AH725 G AH725 80 – 140 0.1 – 0.25
Alloy steel (C > 0.3)
SCM440, SCr420,
42CrMo4, 20Cr4, etc.		 Lower feed G AH725 DL AH725 G AH725 50 – 100 0.03 – 0.12
First choice G AH725 G AH725 G AH725 80 – 120 0.1 – 0.3
* Stainless steel (Austenitic)
SUS304, SUS316, etc.
X5CrNi18-9, X5CrNiMo17-12-3, etc.		 Lower feed G AH8015 DL AH725 G AH725 50 – 100 0.03 – 0.1
First choice G AH8015 G AH8015 G AH8015 60 – 100 0.1 – 0.15
Stainless steel (Martensitic, Ferritic)
SUS430, SUS416, etc.
X6Cr17, X12CrS13, etc.		 Lower feed G AH8015 DL AH725 G AH725 50 – 100 0.03 – 0.1
First choice G AH8015 G AH8015 G AH8015 60 – 100 0.1 – 0.15
Stainless steel
(Precipitation hardening)
SUS630, X5CrNiCuNb16-4, etc.		 Lower feed G AH8015 DL AH725 G AH725 50 – 100 0.03 – 0.1
First choice G AH8015 G AH8015 G AH8015 60 – 100 0.1 – 0.15
Grey cast iron
FC250, GG25, 250, etc.		 Lower feed G AH725 DL AH725 G AH725 50 – 100 0.03 – 0.14
First choice G AH725 G AH725 G AH725 80 – 140 0.1 – 0.35
Ductile cast iron
FCD700, 700-2, etc.		 Lower feed G AH725 DL AH725 G AH725 50 – 100 0.03 – 0.14
First choice G AH725 G AH725 G AH725 80 – 140 0.1 – 0.35
Aluminium alloys Lower feed G AH725 DL AH725 G AH725 80 – 160 0.03 – 0.2
First choice G AH725 G AH725 G AH725 100 – 200 0.1 – 0.3
Heat-resistant alloys
Inconel 718, etc.		 Lower feed G AH8015 DL AH725 G AH725 20 – 50 0.03 – 0.08
First choice G AH8015 G AH8015 G AH8015 20 – 50 0.06 – 0.13
Titanium alloys
Ti-6Al-4V, etc.		 Lower feed G AH725 DL AH725 G AH725 30 – 60 0.03 – 0.1
First choice G AH725 G AH725 G AH725 30 – 60 0.1 – 0.18
Hardened steel
≥ 40HRC		 Lower feed G AH8015 DL AH725 G AH725 40 – 100 0.03 – 0.1
First choice G AH8015 G AH8015 G AH8015 50 – 100 0.06 – 0.13

The use of NDL chipbreakers is recommended for cross hole drilling with low feed conditions.
*Coolant recommendations for drilling stainless steel:
– Oil coolant is first priority
– Water soluble coolant requires at least 20% oil concentration

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