FAQ
TCMT triangular turning insert
China Lizhou Hard Alloy Source Factory
Product Name：Triangular lathe tool
Coating : PVD
Brand number:LMP202
Classification :
Turning insert
keyword：
lizhou
TCMT Carbide Turning Inserts: TCMT090204, TCMT110204, TCMT16T304
As a leading carbide manufacturer, we provide world-class solutions for precision machining. Among our top-performing products are the TCMT series carbide turning inserts, including TCMT090204, TCMT110204, and TCMT16T304. These inserts are designed to deliver excellent wear resistance, cutting efficiency, and consistent surface quality, meeting the demands of industries such as automotive, aerospace, energy, and mold-making.
This article will cover a comprehensive product analysis, including:
The meaning of the TCMT code (letters and numbers)
Performance and advantages of carbide inserts
Dimensional parameters for each insert
Usage scenarios and functions
Key features and benefits
Cautions for use
Technical or patent innovations
By the end, you will understand why TCMT carbide inserts are among the most reliable choices for modern CNC machining and general turning operations.
Type | Basic Dimensions (mm) | Cutting Data | PVD | CVD | |||||
I.C | S | D | R | Cutting Depth (mm) | Feed Rate （ mm/tooth ） | LMP202 | LKC202 | LPC202 | |
TCMT 090204 | 5.56 | 2.38 | 2.50 | 0.4 | 0.6-1.5 | 0.03-0.15 | ⚪ |
|
|
TCMT 090208 | 5.56 | 2.38 | 2.50 | 0.8 | 0.6-1.5 | 0.05-0.15 | ⚪ |
|
|
TCMT 110204 | 6.35 | 2.38 | 2.80 | 0.4 | 0.80-2.00 | 0.05-0.20 | ⚪ |
|
|
TCMT 110208 | 6.35 | 2.38 | 2.80 | 0.8 | 0.80-2.50 | 0.07-0.20 | ⚪ |
|
|
TCMT 16T304 | 9.525 | 3.97 | 4.40 | 0.4 | 1.00-3.00 | 0.07-0.25 | ⚪ |
|
|
TCMT 16T308 | 9.525 | 3.97 | 4.40 | 0.8 | 1.00-3.00 | 0.09-0.25 | ⚪ |
|
|
1. Understanding the TCMT Insert Designation
Each TCMT code follows the ISO turning insert designation system:
T – Insert shape: Triangle (60° corner)
C – Relief angle: 7° clearance (ensures sharp cutting edge)
M – Tolerance class: Medium tolerance, balancing precision and cost
T – Type of chipbreaker / clamping hole style
Numbers (090204, 110204, 16T304) – Indicate size, thickness, and corner radius
Examples:
TCMT090204
09 = Cutting edge length (~9mm)
02 = Insert thickness (~2.38mm)
04 = Nose radius (0.4mm)
TCMT110204
11 = Cutting edge length (~11mm)
02 = Insert thickness (~2.38mm)
04 = Nose radius (0.4mm)
TCMT16T304
16 = Cutting edge length (~16mm)
T3 = Insert thickness (~3.97mm)
04 = Nose radius (0.4mm)
This naming system allows machinists to select the exact insert for their operation, ensuring compatibility with toolholders and turning machines.
2. Advantages of Carbide TCMT Inserts
Being a hard alloy (cemented carbide) manufacturer, our TCMT inserts are produced with high-performance tungsten carbide substrates and advanced coatings (CVD and PVD). Key benefits include:
High Hardness & Wear Resistance
Carbide hardness above 90 HRA ensures resistance against abrasive wear.
Thermal Stability
Coatings like TiN, TiCN, Al₂O₃, TiAlN protect the cutting edge under high temperatures.
Edge Sharpness
Positive rake angle improves sharpness, making TCMT inserts ideal for precision turning.
Excellent Surface Finish
Low cutting forces and good chip evacuation lead to superior surface quality.
Versatility
Works effectively on steel, stainless steel, cast iron, aluminum, copper alloys, and non-ferrous metals.
Cost Efficiency
Multi-edge design maximizes tool utilization and reduces cost per component.
3. Dimensional and Geometric Parameters
TCMT090204
Size: 9mm edge length
Thickness: ~2.38mm
Nose radius: 0.4mm
Application: Small workpieces, precision finishing
TCMT110204
Size: 11mm edge length
Thickness: ~2.38mm
Nose radius: 0.4mm
Application: General-purpose turning, medium-sized components
TCMT16T304
Size: 16mm edge length
Thickness: ~3.97mm
Nose radius: 0.4mm
Application: Larger components, roughing and semi-finishing
4. Usage Scenarios
Automotive Industry
Shafts, gears, brake systems, and precision engine parts.
Aerospace Industry
Lightweight alloys, titanium, and nickel-based superalloys.
Energy Sector
Turbine parts, oil & gas equipment, and power plant components.
General Engineering
Shafts, sleeves, pipes, and custom precision parts.
Mold and Die
Precision cutting of hardened steels in mold applications.
5. Functions and Roles
Turning Operations: External turning, facing, profiling, and contouring.
Material Flexibility: Effective on both soft alloys (aluminum, brass) and hard-to-cut materials (stainless steel, heat-resistant alloys).
Chip Control: Advanced chipbreaker designs minimize built-up edge.
Surface Accuracy: Ensures tight tolerances and fine finishes.
6. Features and Benefits
Positive Rake Angle: Reduces cutting forces, lowers power consumption.
Sharp Cutting Edge: Ideal for fine turning and finishing.
Wide Compatibility: Fits ISO-standard toolholders.
Multi-Coating Options: CVD and PVD coatings for optimized material performance.
High Productivity: Stable cutting at high speeds and feeds.
7. Cautions for Use
Correct Holder Selection
Match TCMT inserts with compatible ISO toolholders.
Cutting Parameters
Adjust cutting speed, feed, and depth according to workpiece material.
Coolant Application
Use coolant for stainless steel and heat-resistant alloys to extend tool life.
Indexing and Rotation
Replace or rotate inserts before excessive wear occurs.
Avoid Overloading
Excessive feed or depth of cut may cause premature edge chipping.
8. Technical and Patent Innovations
Our TCMT inserts incorporate proprietary technologies to enhance performance:
Nano-Layer Coating Technology
Multi-layer coatings improve wear and oxidation resistance.
Fine-Grain Carbide Substrates
Provides balance between hardness and toughness.
Advanced Chipbreaker Designs
Special geometries for smooth chip evacuation and stable cutting.
Customized Grades
Different carbide grades available for steel, stainless steel, cast iron, and non-ferrous metals.
9. Why Choose Our TCMT Inserts?
Direct Manufacturer Advantage: Lower costs and consistent quality.
Tailored Solutions: Inserts can be customized with coatings and chipbreaker geometries.
ISO Certified: Compliant with international standards.
Proven Global Applications: Widely used across Asia, Europe, and the Americas.
High ROI: Long tool life reduces downtime and costs.
Previous page
Next page
Use equipment
CNC machining centre
CNC machine tools
Carved machine
Factory Board
Factory Board
Factory Board
Factory Board
Factory Board
Recommended products
FAQ
2026-04-21
Common Issues in Machining Stainless Steel with Lizhou Turning Inserts
A detailed guide to LIZHOU cemented carbide turning inserts, covering naming conventions, types, selection of inserts specifically designed for roughing and finishing stainless steel, the differences between internal-bore and external-diameter inserts, and answers to frequently asked questions.
2026-04-21
Differences and Applications of Cobalt Drill Bits vs. Carbide Drill Bits
LiZhou Cemented Carbide provides a detailed comparison of cobalt-tipped drills and cemented carbide drills, covering material composition, hardness, tool life, suitable workpiece materials, and common issues to help you quickly select the right tool.
2026-03-31
What is the melting point of tungsten carbide? – Lizhou Cemented Carbide
This comprehensive analysis of Lizhou Cemented Carbide covers the melting point of tungsten carbide (2,870°C), a performance comparison, and industrial applications, explaining in detail why its high melting point makes cemented carbide highly resistant to high temperatures, wear, and deformation—making it ideally suited for tools, mining, steelmaking, and other demanding applications.
2026-03-28
How to Choose Positive and Negative Turning Inserts | LiZhou ISO Turning Tool Code Analysis
A Must-Read for Beginners! Lizhou Cemented Carbide Shows You How to Decode ISO Codes for Turning Inserts, Distinguish Between Positive- and Negative-Rake Inserts, Master the Three Key Selection Principles, and Resolve Common Issues Such as Poor Finish in Precision Turning and Work-Hardening When Machining Stainless Steel.
Hotline：
IPV4 / IPV6