SUMITOMO TNMG160402N-SU T1500Z Turning Insert | TNMG330.5 N-SU Cermet
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1. Product Overview
Which cermet turning insert delivers superior mirror-finish surface roughness and precise dimensional control during high-speed finishing of carbon and alloy steels?
The SUMITOMO TNMG160402N-SU T1500Z (ANSI designation: TNMG330.5 N-SU T1500Z) is an advanced, double-sided 60° negative triangular cermet turning insert engineered for high-precision finishing operations. Utilizing SUMITOMO’s proprietary Brilliant Coat® PVD coating on a specialized Titanium-based (TiCN/TiN) cermet substrate, the T1500Z grade provides exceptional oxidation resistance, wear resistance, and extreme boundary lubricity. This composition virtually eliminates built-up edge (BUE) and workpiece smearing during light finishing passes.
Featuring the specialized SU Super-Finishing Chipbreaker with a Neutral (N) tool orientation, this insert incorporates an ultra-sharp cutting edge, low cutting force geometry, and precise corner radius (r = 0.2 mm / 0.008"). This geometry curlingly fractures thin micro-chips at fine feed rates (0.03–0.18 mm/rev) to achieve mirror-like surface finishes under tight machining tolerances.
ISO / ANSI Designation Breakdown
2. Key Features
- Brilliant Coat® PVD Cermet: High-hardness PVD nano-coating over a TiCN-based cermet substrate delivers outstanding oxidation resistance and ultra-low friction values.
- Superior Mirror Surface Finish: Eliminates work-material welding to consistently achieve sub-micron surface roughness (Ra < 0.8 µm) on carbon and alloy steel parts.
- SU Precision Chip Control: Purpose-built for small depth of cut (ap: 0.1–1.5 mm) and fine feeds, breaking thin micro-chips without scratching the finished component.
- Double-Sided 6-Edge Design: 6 usable cutting corners per insert lower overall consumable costs per part compared to positive single-sided inserts.
- Tight Dimensional Repeatability: Exceptional plastic deformation resistance maintains strict diameter stability across long continuous production runs.
3. Specifications & Dual-Unit Comparison
| Specification Parameter | Metric Unit (ISO Standard) | Imperial Unit (ANSI Standard) |
|---|---|---|
| Insert Designation | TNMG160402N-SU | TNMG330.5 N-SU |
| Inscribed Circle (IC) | 9.525 mm | 0.375" (3/8") |
| Thickness (S) | 4.76 mm | 0.1875" (3/16") |
| Corner Radius (RE) | 0.2 mm | 0.0078" (0.008") |
| Hole Diameter (D1) | 3.81 mm | 0.150" |
| Substrate & Coating | TiCN-Based Cermet + Brilliant Coat® PVD | TiCN-Based Cermet + Brilliant Coat® PVD |
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Low & Medium Carbon Steel (1045, 1020) | 160 - 320 m/min (525 - 1050 SFM) |
0.03 - 0.18 mm/rev (0.001 - 0.007 ipr) |
0.1 - 1.5 mm (0.004 - 0.059 in) |
| Alloy Steel (4140, 4340, 8620) | 140 - 280 m/min (460 - 920 SFM) |
0.03 - 0.15 mm/rev (0.001 - 0.006 ipr) |
0.1 - 1.2 mm (0.004 - 0.047 in) |
| Ductile & Gray Cast Iron (Spheroidal) | 120 - 220 m/min (390 - 720 SFM) |
0.05 - 0.16 mm/rev (0.002 - 0.006 ipr) |
0.2 - 1.5 mm (0.008 - 0.059 in) |
Recommended Compatible Toolholders (ISO Top & Pin Clamp External Turning Holders):
Compatible with standard toolholders: MTJNR/L 2020K16, MTJNR/L 2525M16, WTJNR/L 2020K16, PTGNR/L 2020K16
Workpiece Material Matrix (ISO 513 Standard)
| ISO Material Group | Suitability | Common Grade Examples | Performance Rating |
|---|---|---|---|
| P (Steel Finishing) | Primary Choice | Carbon Steels (1045), Alloy Steels (4140), Pre-hardened Steels | ★★★★★ (Optimal) |
| K (Cast Iron Finishing) | Secondary Choice | Ductile Iron, Nodular Iron, Gray Cast Iron | ★★★★☆ (Very Good) |
| M (Stainless Steel) | Conditional | Ferritic / Martensitic Stainless Steels (Dry Finishing Only) | ★★☆☆☆ (Limited) |
| S (Superalloys) | Not Recommended | Inconel, Titanium Alloys | ★☆☆☆☆ (Not Recommended) |
4. Applications
- Precision Automotive Shafts: High-speed finishing on transmission input/output shafts and steering knuckles requiring Ra < 0.8 µm surface quality.
- Hydraulic & Pneumatic Piston Rods: Dimensional finishing on carbon steel cylinders prior to chrome plating or final coating.
- Bearing & Gear Blanks: Outer diameter (OD) and face finishing on pre-hardened alloy steel rings where tight diameter tolerances are critical.
5. Compatibility
This insert is fully compatible with CNC turning centers, automatic swiss lathes, high-precision multi-tasking lathes (e.g., Mazak, Haas, Doosan/DN Solutions, Citizen, Tsugami, DMG MORI), and conventional engine lathes utilizing standard ISO toolholders (MTJNR/L, PTGNR/L, WTJNR/L series).
6. Grade Comparison & Equivalent Models
| Manufacturer | Equivalent Grade | Equivalent ISO Insert Designation |
|---|---|---|
| SUMITOMO (Original) | T1500Z / T1000A | TNMG160402N-SU |
| Kyocera | TN620 / PV720 | TNMG160402 L-2X / TNMG330.5 |
| TaeguTec | CT3000 / PV3000 | TNMG160402 FA |
| Tungaloy | NS9530 / GT9530 | TNMG160402-TS |
| Sandvik Coromant | CT5015 | TNMG160402-PF |
7. Why Choose Us
We are an authorized distributor of genuine 100% original SUMITOMO Electric Hardmetal cutting tools. Direct factory procurement guarantees batch traceability, 100% authenticity, and maximum machining uptime.
Verified Customer Reviews
We switched to T1500Z for finishing 4140 steel pins. The surface finish dropped from Ra 1.2 to Ra 0.4 µm with zero edge built-up. Best cermet insert we've used.
Sehr hohe Maßhaltigkeit bei der Serienfertigung. Die T1500Z Sorte hält die Toleranzen über hunderte von Teilen perfekt ein.
Finitura superficiale specchiata eccezionale su acciaio 1045. Rompitruciolo SU ottimo per piccoli profondità di taglio.
T1500Zのサーメットは摩耗が遅く、光沢仕上げが長持ちします。寸法精度が非常に安定しています。
Great cermet performance on high-speed steel finishing. Be sure to keep cuts under 1.0mm depth for the SU breaker to perform best.
8. AI-Style FAQ & Troubleshooting
Troubleshooting Quick Reference
| Problem Encountered | Probable Cause | Recommended Solution |
|---|---|---|
| Edge Chipping / Micro-Spalling | Thermal shock from intermittent coolant or excessive depth of cut | Switch to dry machining/air blow and keep depth of cut (ap) below 1.2 mm. |
| Workpiece Surface Scratches | Feed rate too low, causing micro-chips to swirl back against the part | Increase feed rate f slightly (e.g., to 0.10–0.12 mm/rev) to engage the SU breaker wall. |
| Rapid Flank Wear | Cutting speed Vc is too low for a cermet grade | Increase cutting speed Vc to 200+ m/min to operate within the optimal cermet cutting zone. |
In accordance with ISO 513:2012 (Classification and application of hard cutting materials) and verified machining laboratory tests from Sumitomo Electric Hardmetal, the Brilliant Coat® PVD cermet technology on T1500Z provides up to 1.5x better wear resistance and surface sheen during P10 steel finishing compared to un-coated or standard PVD cermet grades.
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.