
Grooving tools with 4 cutting-edge insert
Ground insert clamps into unique insert pocket and provides high rigidity as well as repeatability
Applications & Features
Applications
Features
1. Unique 3-point clamping system
The unique pocket design provides accurate indexing repeatability of the cutting edge height.
2. Ground or molded chip breakers
Enhanced lineup for greater flexibility.
3. Expedited delivery service for special grooving inserts
Inserts & Grades
Inserts
TetraMini-Cut Grooving and Parting-off Inserts (Grooving width 0.33 – 3.0 mm)
- Rigid grooving tools with 4 cutting-edge insert
TetraForce-Cut Grooving and Parting-off Inserts (Grooving width 0.5 – 4 mm)
- Rigid grooving tools with 4 cutting-edge insert
TetraMini-Cut Threading Inserts (Pitch 0.4 – 3.0 mm)
- Rigid threading tools with 4 cutting-edge insert
Grades
AH7025
- P20 – P30 / M20 – M30 / S15 – S25
- Excellent wear resistance and high rigidity
- First choice for grooving of 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
SH725
- P20 – P30 / M20 – M30
- High wear resistance
- Designed for machining steel and stainless steel
Toolholders
Grooving & Parting
TetraMini-Cut Toolholders
Rigid grooving and threading tools with 4 cutting-edge insert
Grooving & Parting
TetraForce-Cut Toolholders
Rigid grooving and threading tools with 4 cutting-edge insert
Other
TetraForce-Cut / TetraMini-Cut Shanks
Rigid grooving and threading tools with 4 cutting-edge insert
Practical examples
Example #1
General Engineering
Part: | Shaft stator |
Material: | S45C / C45 |
Toolholder: | STCR2525-27 |
Insert: | TCS27-200-020 |
Grade: | AH725 |
Cutting conditions: | Vc = 210 (m/min) f = 0.15 (mm/rev) CDX = 2 (mm) CW = 2 (mm) Application: External grooving Coolant: Wet Machine: NC lathe |

Example #2
Automotive Industry
Part: | Input shaft |
Material: | SCr420 / 20Cr4 |
Toolholder: | STCR2525Z18 |
Insert: | TCG18R150-020 |
Grade: | AH7025 |
Cutting conditions: | Vc = 100 (m/min) f = 0.08 (mm/rev) CDX = 2.1 (mm) CW = 2 (mm) Application: External grooving Coolant: Wet Machine: NC lathe |

Example #3
Miniature / Electronic Industry
Part: | Spool shaft |
Material: | S45C / C45 |
Toolholder: | STCR1010X18 |
Insert: | TCP18R200F-010 |
Grade: | SH725 |
Cutting conditions: | Vc = 43 (m/min) f = 0.10 (mm/rev) CDX= 1.5 / 1.1 (mm/min) CW = 2 / 2.5 (mm) Application: External grooving Coolant: Wet Machine: Swiss lathe |

Standard cutting conditions
TCS18R (3D chipbreaker), TCG18R/L (honed edge)
ISO | Workpiece materials | Grades | Cutting speed Vc (m/min) |
Feed: f (mm/rev) | ||
---|---|---|---|---|---|---|
TCL18 | TCS18 | TCG18 | ||||
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Low carbon steel (S15C / C15, S20C / C20, etc.) |
AH7025 | 80 – 180 | 0.03 – 0.12 | 0.04 – 0.16 | 0.04 – 0.14 |
Carbon steels, Alloy steel (S55C / C55, SCM440 / 42CrMoS4, etc.) |
AH7025 | 80 – 180 | 0.03 – 0.12 | 0.04 – 0.16 | 0.04 – 0.14 | |
Prehardened steel (NAK80, PX5, etc.) |
AH7025 | 80 – 180 | 0.03 – 0.12 | 0.04 – 0.16 | 0.04 – 0.14 | |
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Stainless steel (SUS304 / X5CrNi18-9, X5CrNiMo17-12-2, etc) |
AH7025 | 50 – 120 | 0.03 – 0.12 | 0.04 – 0.16 | 0.04 – 0.14 |
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Grey cast iron (FC250 / GG25 / 250, FC300 / GG30 / 300, etc.) |
AH7025 | 50 – 180 | 0.03 – 0.12 | 0.04 – 0.16 | 0.04 – 0.14 |
Ductile cast iron (FCD400 / 400-15, FCD600 / 600-3, etc.) |
AH7025 | 50 – 180 | 0.03 – 0.12 | 0.04 – 0.16 | 0.04 – 0.14 | |
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Titanium alloys (Ti-6AI-4V, etc.) | AH7025 | 30 – 80 | 0.03 – 0.12 | 0.04 – 0.16 | 0.04 – 0.14 |
Superalloys (Inconel718, etc.) | AH7025 | 20 – 60 | 0.03 – 0.12 | 0.04 – 0.16 | 0.04 – 0.14 |
TCP18R/L (lightly honed edge) / TCP18R/L-F (sharp edge)
ISO | Workpiece materials | Priority | Grades | Cutting speed Vc (m/min) |
Feed f (mm/rev) |
---|---|---|---|---|---|
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Low carbon steel (S15C / C15, S20C / C20, etc.) |
First choice | SH725 | 80 – 180 | 0.03 – 0.1 |
Toughness | AH725 | 80 – 180 | 0.03 – 0.1 | ||
Carbon steels, Alloy steel (S55C / C55, SCM440 / 42CrMoS4, etc.) |
First choice | SH725 | 80 – 180 | 0.03 – 0.1 | |
Toughness | AH725 | 80 – 180 | 0.03 – 0.1 | ||
Prehardened steel (NAK80, PX5, etc.) |
First choice | SH725 | 80 – 180 | 0.03 – 0.1 | |
Toughness | AH725 | 80 – 180 | 0.03 – 0.1 | ||
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Stainless steel (SUS304 / X5CrNi18-9, X5CrNiMo17-12-2, etc) |
First choice | SH725 | 50 – 120 | 0.03 – 0.1 |
Toughness | AH725 | 50 – 120 | 0.03 – 0.1 | ||
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Grey cast iron (FC250 / GG25 / 250, FC300 / GG30 / 300, etc.) |
First choice | AH725 | 50 – 180 | 0.03 – 0.1 |
Sharpness | SH725 | 50 – 180 | 0.03 – 0.1 | ||
Ductile cast iron (FCD400 / 400-15, FCD600 / 600-3, etc.) |
First choice | AH725 | 50 – 180 | 0.03 – 0.1 | |
Sharpness | SH725 | 50 – 180 | 0.03 – 0.1 | ||
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Titanium alloys (Ti-6AI-4V, etc.) | First choice | SH725 | 30 – 80 | 0.03 – 0.1 |
Toughness | AH725 | 30 – 80 | 0.03 – 0.1 | ||
Superalloys (Inconel718, etc.) | First choice | SH725 | 20 – 60 | 0.03 – 0.1 | |
Toughness | AH725 | 20 – 60 | 0.03 – 0.1 |
TCT18FR/R-ISO (Full profile threading insert)/TCT18FR (Threading insert)
ISO | Workpiece materials | Priority | Grades | Cutting speed Vc (m/min) |
Pitch (mm) | TPI |
---|---|---|---|---|---|---|
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Low carbon steel (S15C / C15, S20C / C20, etc.) |
First choice | SH725 | 60 – 150 | 0.4 – 2.0 | 64 – 18 |
Toughness | AH725 | 60 – 150 | 0.8 – 3.0 | 32 – 8 | ||
Carbon steels, Alloy steel (S55C / C55, SCM440 / 42CrMoS4, etc.) |
First choice | SH725 | 60 – 150 | 0.4 – 2.0 | 64 – 18 | |
Toughness | AH725 | 60 – 150 | 0.8 – 3.0 | 32 – 8 | ||
Prehardened steel (NAK80, PX5, etc.) |
First choice | SH725 | 60 – 150 | 0.4 – 2.0 | 64 – 18 | |
Toughness | AH725 | 60 – 150 | 0.8 – 3.0 | 32 – 8 | ||
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Stainless steel (SUS304 / X5CrNi18-9, X5CrNiMo17-12-2, etc) |
First choice | SH725 | 50 – 80 | 0.4 – 2.0 | 64 – 18 |
Toughness | AH725 | 50 – 80 | 0.8 – 3.0 | 32 – 8 | ||
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Grey cast iron (FC250 / GG25 / 250, FC300 / GG30 / 300, etc.) |
First choice | AH725 | 50 – 100 | 0.8 – 3.0 | 32 – 8 |
Sharpness | SH725 | 50 – 100 | 0.4 – 2.0 | 64 – 18 | ||
Ductile cast iron (FCD400 / 400-15, FCD600 / 600-3, etc.) |
First choice | AH725 | 50 – 100 | 0.8 – 3.0 | 32 – 8 | |
Sharpness | SH725 | 50 – 100 | 0.4 – 2.0 | 64 – 18 | ||
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Titanium alloys (Ti-6AI-4V, etc.) | First choice | SH725 | 30 – 100 | 0.4 – 2.0 | 64 – 18 |
Toughness | AH725 | 30 – 100 | 0.8 – 3.0 | 32 – 8 | ||
Superalloys (Inconel718, etc.) | First choice | SH725 | 30 – 100 | 0.4 – 2.0 | 64 – 18 | |
Toughness | AH725 | 30 – 100 | 0.8 – 3.0 | 32 – 8 |
TCL27 / TCS27/ TCS27-R/L / TCS27-Full R/ TCM27 / TCM27-Full R
ISO | Workpiece materials | Grades | Cutting speed Vc (m/min) |
Feed: f (mm/rev) | Depth of cut for profiling (with full radius insert) |
|||||
---|---|---|---|---|---|---|---|---|---|---|
Grooving, parting-off | Parting-off (with hand) |
Profiling (with full radius insert) |
||||||||
TCL27 | TCS27 | TCM27 | TCS27 | TCS27 | TCM27 | |||||
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Carbon steelsteel (S45C / C45, etc.) |
AH725 | 100 – 200 | 0.03 – 0.12 | 0.05 – 0.15 | 0.05 – 0.25 | 0.04 – 0.12 | 0.05 – 0.10 | 0.05 – 0.15 | 0.5 |
Alloy steel (SCM435 / 34CrMo4, etc.) |
AH725 | 50 -180 | 0.03 – 0.12 | 0.05 – 0.15 | 0.05 – 0.25 | 0.04 – 0.12 | 0.05 – 0.10 | 0.05 – 0.15 | 0.5 | |
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Stainless steel (SUS304 / X5CrNi18-9, etc.) |
AH725 | 100 – 150 | 0.03 – 0.12 | 0.05 – 0.15 | 0.05 – 0.20 | 0.04 – 0.12 | 0.05 – 0.10 | 0.05 – 0.15 | 0.5 |
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Grey cast iron (FC250 / 250 / GG25, etc.) |
AH725 | 50 – 180 | 0.03 – 0.12 | 0.05 – 0.15 | 0.05 – 0.25 | 0.04 – 0.12 | 0.05 – 0.10 | 0.05 – 0.15 | 0.5 |
Ductile cast iron (FCD400 / 400-15 / GGG400, etc.) |
AH725 | 50 – 120 | 0.03 – 0.12 | 0.05 – 0.15 | 0.05 – 0.20 | 0.04 – 0.12 | 0.05 – 0.10 | 0.05 – 0.15 | 0.5 | |
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Titanium alloys (Ti-6Al-4V, etc.) |
AH725 | 30 – 60 | 0.03 – 0.12 | 0.05 – 0.15 | 0.05 – 0.15 | 0.04 – 0.12 | 0.05 – 0.10 | 0.05 – 0.10 | 0.5 |
Superalloys (Inconel718, etc.) | AH725 | 20 – 50 | 0.03 – 0.12 | 0.05 – 0.15 | 0.05 – 0.15 | 0.04 – 0.12 | 0.05 – 0.10 | 0.05 – 0.10 | 0.5 |
TCL38
ISO | Workpiece materials | Grades | Cutting speed Vc (m/min) |
Feed: f (mm/rev) |
---|---|---|---|---|
Grooving, Parting |
||||
TCL38 | ||||
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Carbon steel (S45C / C45, etc.) |
AH7025 | 80 – 180 | 0.03 – 0.18 |
Alloy steel (SCM435 / 34CrMo4, etc.) |
AH7025 | 50 – 180 | 0.03 – 0.18 | |
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Alloy steel (SCM435 / 34CrMo4, etc.) |
AH7025 | 50 – 150 | 0.03 – 0.14 |
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Grey cast iron (FC250 / 250 / GG25, etc.) |
AH7025 | 50 – 180 | 0.03 – 0.14 |
Ductile cast iron (FCD400 / 400-15 / GGG400, etc.) |
AH7025 | 50 – 120 | 0.03 – 0.14 | |
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Titanium alloys (Ti-6Al-4V, etc.) |
AH7025 | 30 – 60 | 0.03 – 0.14 |
Superalloys (Inconel718, etc.) | AH7025 | 20 – 50 | 0.03 – 0.14 |
For more information about this product, visit our online e-catalog or download the product report: