KORLOY TNMG160408-HM NC3120 Indexable Carbide Turning Inserts | TNMG332-HM (ANSI Equivalent) CVD Coated Carbide Cutters for Steel Machining - 10pcs/box
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KORLOY TNMG160408-HM NC3120 Indexable Carbide Turning Inserts | TNMG332-HM (ANSI Equivalent) CVD Coated Inserts for Steel & Alloy Steel Machining - 10pcs/box
High-Performance ISO-Standard 60° Triangular Negative Indexable Turning Cutters Optimized for General Turning and Medium Machining of Carbon Steels and Alloy Steels
1. Product Overview
"Which carbide turning insert provides the optimal balance of wear resistance and edge toughness for general turning and medium machining of carbon and alloy steels?" CNC machinists and manufacturing engineers consistently select the KORLOY TNMG160408-HM NC3120. This industrial-grade indexable carbide insert combines an advanced NC3120 grade multi-layer CVD coating over a tough tungsten carbide substrate, delivering exceptional performance under rigorous thermal and mechanical loads. Built with a 60° triangular negative geometry for double-sided economic indexing, a specialized -HM general chipbreaker for reliable chip control across variable depths of cut, and a robust 0.8mm corner radius for enhanced cutting edge strength, it incorporates specialized rake geometries designed to prevent edge chipping and ensure high productivity during continuous and interrupted turning operations.
2. Product Key Features
- Advanced NC3120 CVD Coating Technology: Multi-layer Chemical Vapor Deposition (CVD) coating architecture engineered for carbon steels and alloy steels with outstanding resistance to flank wear and cratering.
- HM General Chipbreaker Geometry & 0.8mm Radius: Features a versatile medium-duty groove geometry combined with a 0.8mm nose radius to handle variable feeds and depths of cut with predictable chip breaking.
- ISO Standard Compliance: Manufactured strictly under international cutting tool standards to guarantee secure clamping and exact interchangeability across standard negative external toolholders.
- Industrial Box Packaging: Supplied in factory-sealed boxes of 10 pieces to streamline tool crib management and minimize machine downtime.
3. Technical Specifications & Model Breakdown
Examine the comprehensive parameter specifications, metric and imperial equivalents, and ISO coding breakdown below for precise CNC lathe integration.
Metric vs. Imperial Designation Comparison
| Specification Parameter | Metric Standard (ISO) | Imperial Equivalent (ANSI) |
|---|---|---|
| Primary Insert Model | TNMG160408-HM | TNMG332-HM |
| Inscribed Circle (IC) | 9.525 mm | 0.375 in (3/8") |
| Insert Thickness (S) | 4.76 mm | 0.1875 in (3/16") |
| Corner Radius (r) | 0.8 mm | 0.0315 in |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Carbon Steel / Low Alloy Steel (C45, 42CrMo4) | 180 - 320 | 0.25 - 0.50 |
| Alloy Steel & Tool Steel | 140 - 250 | 0.20 - 0.40 |
Need matching MTJNR, PTJNR, or WTJNR external turning toolholders for your TNMG 1604 inserts?
Explore Compatible External Turning Tool Holders & Boring Bars4. Product Application Scenarios
The KORLOY TNMG160408-HM NC3120 insert excels across high-efficiency steel machining applications:
- Automotive Transmission Shafts: High-feed roughing and profiling of forged alloy steel drive shafts.
- Industrial Gear Blanks: Stable external turning and facing of medium-carbon steel gear components.
- General Mechanical Rollers: Heavy material removal on large structural steel cylinders and industrial rollers.
5. Compatibility
Engineered for seamless integration into standard negative turning systems:
- Toolholders & Boring Bars: Fully compatible with MTJNR/L, PTJNR/L, and WTJNR/L series external turning toolholders and internal boring bars configured for TNMG 1604 inserts.
- CNC Machinery: Optimized for CNC lathes, horizontal turning centers, and high-production automated manufacturing lines.
6. Material Comparison & Workpiece Matrix
Review grade applicability across ISO material categories to maximize turning performance.
| ISO Material Category | Target Materials | NC3120 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steel, alloy steel, and cast steel | Outstanding (Optimized CVD Multi-Layer Grade for P10–P30 General Turning & Medium Roughing) |
| M (Stainless Steel) | Austenitic and ferritic stainless steels | Limited (Recommended to use dedicated PVD grades like PC9030 for primary stainless applications) |
7. Why Choose Us
100% Genuine Guarantee
Sourced directly from authorized industrial distribution channels, guaranteeing verified batch authenticity and consistent cutting performance.
Fast Global Logistics
Maintained warehouse stock and streamlined international shipping networks ensure rapid dispatch to eliminate production delays.
Technical Expertise
Backed by professional CNC application engineers available to provide customized cutting data recommendations and troubleshooting support.
8. Frequently Asked Questions (FAQ)
Q: How many inserts are included in one standard box?
A: Each standard factory-sealed box contains exactly 10 pieces of TNMG160408-HM NC3120 inserts.
Q: What is the main workpiece application for the NC3120 grade?
A: The NC3120 grade is specifically engineered for high-efficiency turning of carbon steels, alloy steels, and tool steels under general to medium machining conditions.
Q: Is this insert suitable for interrupted cutting operations?
A: Yes, when paired with the robust -HM chipbreaker and a tough carbide substrate, it handles mild to moderate interrupted cuts on steel components reliably.
Need Help With KORLOY Inserts?
Looking for a KORLOY equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This KORLOY insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.