Kyocera DCGT11T304ER-U TN60 Cermet Turning Insert for Steel Finishing
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Kyocera DCGT11T304ER-U TN60 Cermet Insert
Product Overview
"Which cermet insert provides the best surface finish and wear resistance for high-speed finishing of carbon steel?"
The Kyocera DCGT11T304ER-U TN60 is a premier uncoated cermet insert engineered for high-speed finishing operations. Utilizing the TN60 grade—a classic cermet known for its exceptional thermal stability and resistance to built-up edge—this insert delivers mirror-like surface finishes on steel. The U-Chipbreaker geometry is specifically designed for light cutting depths, ensuring excellent chip evacuation and reducing cutting force during precision 55° diamond turning.
Key Features
- ✔TN60 Cermet Technology: Superior oxidation resistance compared to carbide, allowing for higher cutting speeds.
- ✔U-Chipbreaker: Optimized for finishing; provides excellent chip control at low feed rates.
- ✔Precision ER Edge: Sharp, reliable edge preparation for consistent dimensional accuracy.
- ✔Superior Surface Finish: Cermet’s low affinity for steel workpieces prevents welding and smearing.
Technical Specifications
| ISO Specification | Metric (mm) | Imperial Equivalent |
|---|---|---|
| Inscribed Circle (IC) | 9.525 mm | 3/8" |
| Thickness (S) | 3.97 mm | 0.156" |
| Corner Radius (RE) | 0.4 mm | 1/64" |
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Carbon Steel (P) | 150 - 350 m/min | 0.05 - 0.15 mm/rev |
| Alloy Steel (P) | 120 - 280 m/min | 0.05 - 0.12 mm/rev |
Model Decoding: DCGT11T304ER-U
55° Rhombic
7° Clearance
Precision
Counter Sunk
Length
3.97mm Thk
0.4 Radius
Chipbreaker
Matching Toolholders
This insert fits all standard ISO toolholders designed for DCGT 11T3 / DCMT 11T3.
View SDJCR/L Toolholders →Applications & Compatibility
The DCGT11T304ER-U TN60 is engineered for high-precision finishing. It is ideal for continuous cutting where tight tolerances and superior surface finishes are required. Its 55° diamond shape allows for versatile profiling, making it suitable for automotive shafts, hydraulic components, and aerospace fittings. Compatible with machines like Citizen, Star, Tsugami, Haas, and Mazak.
Why Choose Kyocera TN60 Cermet?
Kyocera is the world leader in cermet technology. TN60 is a proven grade that offers the perfect balance of toughness and hardness for steel machining.
"Like a mirror" - Mark S. (USA)
Finished a batch of 1018 steel pins. The finish was incredible, no polishing needed.
"Top für Schlichten" - Klaus M. (Germany)
Stable dimensions and very long tool life on light cuts.
"High speed reliable" - Yuki T. (Japan)
TN60 never disappoints. Best chip control with the U-breaker.
"Great value" - Luigi R. (Italy)
Good industrial performance. Essential for our production line.
Industrial Support FAQ
A: Cermet is more brittle than carbide. While TN60 is tough, we recommend continuous finishing for best results. Use carbide for heavy interruptions.
A: No, TN60 is an uncoated cermet. Its chemical stability inherently provides excellent wear resistance without the need for a coating.
A: The U-breaker is a finishing breaker that excels at chip breaking in low depth of cut (DOC) scenarios, preventing "bird-nesting."
Grade Comparison: TN60 is general-purpose cermet. Use PV7025 if PVD coating is required for added wear resistance.
Equivalent Models: Mitsubishi NX2525, Tungaloy NS9530, Korloy CN2000.
Troubleshooting: If chipping occurs, decrease cutting speed or check for rigid workholding. If built-up edge occurs, increase cutting speed.
Workpiece Material Matrix: P (Steel) ●●● | M (Stainless) ●○○ | K (Cast Iron) ●●○ | N (Non-Ferrous) ●●○
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.