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Head changeable reamer

High precision and productivity solution for finishing hole operations

Applications & Features

Applications

Drilling

Features

1. High precision reamer heads for applications of H7 hole-tolerance range

2. Allows applications of higher cutting speeds and feed rates over solid carbide or brazed reamers, ensuring high productivity

3. 2 types of reamer heads are available depending on the hole types

Inserts & Grades

Inserts

HRM-BL (ø10 – ø32 mm)

  • Reaming heads with left hand flute for through holes

HRM-AS (ø10 – ø32 mm)

  • Reaming heads with straight flute for blind holes
Grades

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

Reamer Bodies

Drill Bodies

TRM (ø10 – ø32 mm)

Cylindrical shank with coolant hole

Practical examples

Example #1

Automotive Industry

Part: Flange yoke
Material: FCD500 / GGG50 / 450-10S
Drill: TRM-T9-R32-5
Insert: HRM-27.000-BL-T9
Grade: AH725
Cutting conditions: Vc = 100 (m/min)
f = 1.2 (mm/rev)
Vf = 1415 (mm/min)
H = 20 (mm)
Coolant: Internal
Machine: Horizontal M/C
Example #2

Automotive Industry

Part: Flange yoke
Material: S45C / C45
Drill: TRM-T9-R32-5
Insert: HRM-27.000-BL-T9
Grade: AH725
Cutting conditions: Vc = 90 (m/min)
f = 0.8 (mm/rev)
Vf = 850 (mm/min)
H = 15 (mm)
Coolant: Internal
Machine: Horizontal M/C

Standard cutting conditions

Conversion table for feed per tooth
ISO Workpiece materials Cutting speed Vc (m/min) Feed:fz (mm/t)
AS: Straight flute（for blind holes） BL: Left hand flute（for through holes）
ø10 – ø16 ø16 – ø32 ø10 – ø16 ø16 – ø32
Low carbon steel (C<0.3)
SS400, SM490, S25C, E275A, etc.		 80 – 200 0.05 – 0.18 0.05 – 0.20 0.05 – 0.20 0.05 – 0.27
Carbon steel (C>0.3)
S45C, S55C, C45, C55, etc.		 80 – 150 0.05 – 0.15 0.05 – 0.18 0.05 – 0.18 0.05 – 0.25
Low carbon steel (C<0.3)
SCM415, etc.		 80 – 200 0.05 – 0.18 0.05 – 0.20 0.05 – 0.20 0.05 – 0.27
Alloy steel (C>0.3)
SCM440, SCr420, 42CrMo4, 20Cr4 etc.		 50 – 150 0.03 – 0.10 0.05 – 0.13 0.05 – 0.13 0.05 – 0.17
Stainless steel（Austenitic）
SUS304, SUS316, X5CrNi18-9,
X5CrNiMo17-12-3, etc.		 20 – 40 0.03 – 0.10 0.03 – 0.13 0.05 – 0.13 0.05 – 0.17
Stainless steel（Martensitic and ferritic）
SUS430, SUS416, X6Cr17, etc.		 20 – 40 0.03 – 0.10 0.03 – 0.13 0.05 – 0.13 0.05 – 0.17
Stainless steel（Precipitation hardening）
SUS630, X5CrNiCuNb16-4 etc.		 20 – 40 0.03 – 0.10 0.03 – 0.13 0.05 – 0.13 0.05 – 0.17
Grey cast iron
FC250, GG25, 250 etc.		 100 – 250 0.05 – 0.18 0.05 – 0.20 0.05 – 0.20 0.05 – 0.27
Ductile cast iron
FCD700, etc.		 80 – 200 0.05 – 0.15 0.05 – 0.18 0.05 – 0.18 0.05 – 0.25
Aluminum alloy 100 – 300 0.05 – 0.18 0.05 – 0.20 0.05 – 0.20 0.05 – 0.27
High temp. alloy
Inconel718 etc.		 15 – 50 0.03 – 0.06 0.03 – 0.08 0.05 – 0.1 0.05 – 0.13
Titanium alloy
Ti-6Al-4V etc.		 30 – 60 0.03 – 0.10 0.03 – 0.13 0.05 – 0.13 0.05 – 0.17
Hardened steel
Over 40HRC etc.		 50 – 100 0.03 – 0.08 0.03 – 0.1 0.05 – 0.12 0.05 – 0.15
Conversion table for feed per revolution
ISO Workpiece materials Cutting speed Vc (m/min) Feed:f (mm/rev)
AS: Straight flute（for blind holes） BL: Left hand flute（for through holes）
ø10 – ø16
6 flutes		 ø16.001 – ø20
6 flutes		 ø20.001 – ø32
8 flutes		 ø10 – ø16
6 flutes		 ø16.001 – ø20
6 flutes		 ø20.001 – ø32
8 flutes
Low carbon steel (C<0.3)
SS400, SM490, S25C, E275A, etc.		 80 – 200 0.3 – 1.08 0.3 – 1.2 0.4 – 1.6 0.3 – 1.2 0.3 – 1.62 0.4 – 2.16
Carbon steel (C>0.3)
S45C, S55C, C45, C55, etc.		 80 – 150 0.3 – 0.9 0.3 – 1.08 0.4 – 1.44 0.3 – 1.08 0.3 – 1.5 0.4 – 2
Low carbon steel (C<0.3)
SCM415, etc.		 80 – 200 0.3 – 1.08 0.3 – 1.2 0.4 – 1.6 0.3 – 1.2 0.3 – 1.2 0.4 – 2.16
Alloy steel (C>0.3)
SCM440, SCr420, 42CrMo4, 20Cr4 etc.		 50 – 150 0.18 – 0.6 0.3 – 0.78 0.4 – 1.04 0.3 – 0.78 0.3 – 1.02 0.4 – 1.36
Stainless steel（Austenitic）
SUS304, SUS316, X5CrNi18-9,
X5CrNiMo17-12-3, etc.		 20 – 40 0.18 – 0.6 0.18 – 0.78 0.24 – 1.04 0.3 – 0.78 0.3 – 1.02 0.4 – 1.36
Stainless steel（Martensitic and ferritic）
SUS430, SUS416, X6Cr17, etc.		 20 – 40 0.18 – 0.6 0.18 – 0.78 0.24 – 1.04 0.3 – 0.78 0.3 – 1.02 0.4 – 1.36
Stainless steel（Precipitation hardening）
SUS630, X5CrNiCuNb16-4 etc.		 20 – 40 0.18 – 0.6 0.18 – 0.78 0.24 – 1.04 0.3 – 0.78 0.3 – 1.02 0.4 – 1.36
Grey cast iron
FC250, GG25, 250 etc.		 100 – 250 0.3 – 1.08 0.3 – 1.2 0.4 – 1.6 0.3 – 1.2 0.3 – 1.62 0.4 – 2.16
Ductile cast iron
FCD700, etc.		 80 – 200 0.3 – 0.9 0.3 – 1.08 0.4 – 1.44 0.3 – 1.8 0.3 – 1.62 0.4 – 2
Aluminum alloy 100 – 300 0.3 – 1.08 0.3 – 1.2 0.4 – 1.6 0.3 – 1.2 0.3 – 1.62 0.4 – 2.16
High temp. alloy
Inconel718 etc.		 15 – 50 0.18 – 0.36 0.18 – 0.48 0.24 – 0.64 0.3 – 0.6 0.3 – 0.78 0.4 – 1.04
Titanium alloy
Ti-6Al-4V etc.		 30 – 60 0.18 – 0.6 0.18 – 0.78 0.24 – 1.04 0.3 – 0.78 0.3 – 1.02 0.4 – 1.36
Hardened steel
Over 40HRC etc.		 50 – 100 0.18 – 0.48 0.18 – 0.6 0.24 – 0.8 0.3 – 0.72 0.3 – 0.9 0.4 – 1.2

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