Sumitomo TNMG160404N-GU AC810P Carbide Insert (TNMG 331-GU)
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Sumitomo TNMG160404N-GU AC810P Carbide Insert | ISO TNMG 160404-GU (ANSI TNMG 331-GU)
1. Product Overview
Which turning insert is best for maximum speed, continuous steel turning, and high wear resistance in automated CNC production?
The Sumitomo TNMG160404N-GU AC810P (ANSI Designation: TNMG 331-GU) is a double-sided 60° triangular indexable carbide turning insert engineered specifically for high-speed, continuous turning operations across ISO P05–P15 steel applications. Powered by Sumitomo’s premium AC810P CVD Coating Grade with Absotech® technology, it features a thick, highly oriented Al2O3 / TiCN multi-layer structure applied over an ultra-hard substrate. This specialized grade provides maximum flank and crater wear resistance under extreme cutting temperatures during long, continuous cuts on alloy and carbon steels.
Paired with the versatile GU Universal Chipbreaker, this insert features an optimized 3D rake angle designed to reduce cutting forces and break chips consistently across a wide depth of cut range (ap: 0.8mm to 3.5mm) and feed rates (fn: 0.12mm to 0.40mm). It is the premier grade for maximizing cycle times and tool life on high-speed CNC lathes.
2. Product Key Features
- 6 Double-Sided Cutting Edges: Negative 60° triangular geometry provides 6 highly economic cutting corners per insert.
- Absotech® AC810P Grade: Ultra-hard, heat-resistant CVD coating specifically optimized for extreme cutting speeds (Vc) and long wear life.
- GU Multi-Purpose Chipbreaker: Lower cutting resistance geometry ensures efficient chip curling and prevents chip packing.
- Exceptional Crater Wear Resistance: Prevents premature breakdown of the rake face under intense high-speed cutting heat.
- Dual ISO / ANSI Compliance: Fully standard-compliant according to ISO 1832 and ANSI B212.4 dimensional specifications.
ISO / ANSI Code Nomenclature Breakdown
Detailed geometric interpretation of the TNMG160404N-GU specification standard:
3. Technical Parameters & Metric vs Imperial Comparison
| Specification Parameter | Metric Value (ISO Designation) | Imperial Value (ANSI Designation) |
|---|---|---|
| Product Model Code | TNMG160404N-GU AC810P | TNMG 331-GU AC810P |
| Inscribed Circle (i.C.) | 10.0 mm | 0.375" (3/8") |
| Thickness (S) | 4.76 mm | 0.1875" (3/16") |
| Corner Radius (re) | 0.4 mm | 0.0156" (1/64") |
| Fixing Hole Diameter (d1) | 3.81 mm | 0.150" |
| Insert Substrate Grade | Sumitomo AC810P (CVD Al2O3/TiCN High-Speed) | Sumitomo AC810P (CVD Al2O3/TiCN High-Speed) |
Recommended Speeds & Feeds (Cutting Parameters)
| Workpiece Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| ISO P: High-Speed Continuous Carbon Steel (1045) | 220 - 450 m/min (720 - 1475 SFM) |
0.15 - 0.40 mm/rev (0.006 - 0.016 IPR) |
1.0 - 3.5 mm (0.039 - 0.138 in) |
| ISO P: High-Speed Alloy Steel (4140 / 4340) | 180 - 380 m/min (590 - 1245 SFM) |
0.12 - 0.35 mm/rev (0.005 - 0.014 IPR) |
0.8 - 3.0 mm (0.031 - 0.118 in) |
| ISO P: Free-Machining & Cold-Drawn Steel | 250 - 500 m/min (820 - 1640 SFM) |
0.15 - 0.38 mm/rev (0.006 - 0.015 IPR) |
0.8 - 3.0 mm (0.031 - 0.118 in) |
Fits all standard ISO turning toolholders with a 60° negative pocket design:
MTJNR / MTJNL 2020K16 Holder MTJNR / MTJNL 2525M16 Holder WTJNR / WTJNL 2020K16 Holder DTJNR / DTJNL 2525M16 Holder Boring Bar: S25S-MTJNR164. Applications & Industrial Operations
- Automotive High-Speed Turning: Long continuous cuts on drive shafts, ring gears, and smooth bar stock.
- High-Volume Shaft Production: Mass production setups running high surface speeds (300+ m/min) on carbon steel bar stock.
- Continuous O.D. and Facing Operations: Ideal for high-efficiency finishing and medium turning without interruptions.
5. Compatibility & Machine Integration
Universal fitment across standard ISO TNMG160404 / ANSI TNMG 331 holders. Compatible with all CNC turning centers and automated lathes from Sandvik Coromant, Kennametal, Iscar, Kyocera, Tungaloy, Walter, and Seco.
6. Grade Comparison & Equivalent Models Matrix
| Brand | Equivalent Grade | Equivalent Chipbreaker | ISO Material Application |
|---|---|---|---|
| Sumitomo Electric | AC810P | GU | ISO P05-P15 |
| Sandvik Coromant | GC4415 / GC4315 | PM / PF | ISO P05-P15 |
| Kennametal | KCP05B / KCP10B | MP / MS | ISO P05-P15 |
| Iscar | IC807 / IC8150 | M3P / F3P | ISO P05-P15 |
| Kyocera | CA510 / CA515 | MU / PQ | ISO P05-P15 |
7. Why Choose Us?
- 100% Guaranteed Original Sumitomo: Direct factory authorization channels ensure genuine Absotech® coating quality and micro-grain substrate stability.
- Technical Machining Support: Expert advice on optimizing surface speeds (Vc) and feeds (fn) for high-speed continuous turning.
- Fast Dispatch & Industrial Packaging: Original sealed 10-piece factory box packaging ready for rapid global shipping.
Verified Customer Reviews
Insane wear life at high speeds!
"We pushed our CNC lathe to 1100 SFM on 1045 steel bars. The AC810P holds up remarkably well against crater wear compared to standard grades. Massive productivity boost."
— Robert H., Production Manager (United States 🇺🇸)Perfekt für die Serienfertigung mit hoher Schnittgeschwindigkeit
"Bei kontinuierlichem Schnitt auf C45-Stahl ist die Standzeit unschlagbar. Die AC810P-Beschichtung glänzt bei hohen Vc-Werten."
— Christian K., CNC-Programmierer (Germany 🇩🇪)Eccezionale resistenza all'usura per alta velocità
"Inserti fantastici per tornitura continua su acciaio. Nessuna usura del petto e ciclo di lavoro velocissimo."
— Andrea P., Capo Repparto (Italy 🇮🇹)鋼材の高速連続旋削で驚異的な耐摩耗性を発揮
"AC810Pは高速旋削でのフランク摩耗が抑えられ、長時間の連続加工でも刃先が非常に安定しています。"
— Kenichi S., Tooling Specialist (Japan 🇯🇵)Great grade for continuous bar turning
"Runs clean, excellent chip control with the GU breaker, and holds tight tolerances for long cycles."
— Liam T., CNC Machinist (United Kingdom 🇬🇧)8. Frequently Asked Questions (AI & Voice Search Optimized)
Troubleshooting & Machining Optimization Guide
| Symptom / Failure Mode | Root Cause Analysis | Recommended Action |
|---|---|---|
| Edge Chipping / Micro-Fracture | Substrate is too hard for interrupted cutting shock or heavy vibration. | Switch to a tougher steel turning grade such as AC820P or AC830P. |
| Rapid Flank Wear | Cutting speed Vc is too high or material hardness exceeds grade envelope. | Reduce cutting speed Vc by 10-15% or ensure coolant flow is directly targeted at the cutting zone. |
| Stringy Chips / Bird Nesting | Feed rate fn or depth of cut ap too low to activate the GU chipbreaker geometry. | Increase feed rate fn above 0.15 mm/rev or increase depth of cut ap to curl chips properly. |
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.