Korloy TPGH090202L-CRT CN2000 Cermet Finishing Insert for Precision Lathe (10pcs)
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The Original Korloy TPGH090202L-CRT CN2000 is an elite Cermet Turning Insert engineered for Ultra-High Precision Finishing. Utilizing the advanced CN2000 Grade, this insert offers the chemical stability required to prevent built-up edge (BUE), ensuring a flawless, mirror-like surface finish. The CRT chipbreaker is specifically optimized for very light depths of cut, making it the perfect tool for Swiss-type CNC lathes and high-accuracy micro-machining.
Cermet Precision: The CN2000 grade (Ceramic + Metal) provides superior resistance to plastic deformation and oxidation compared to standard carbide. This ensures that the critical 0.2mm corner radius maintains its sharp profile over long production runs, providing excellent dimensional repeatability.
Technical Specifications:
| ISO Designation | TPGH 090202L-CRT |
| Insert Shape | Triangular 11° Positive (T) |
| Inscribed Circle (IC) | 5.56 mm / (7/32") |
| Thickness (S) | 2.38 mm / (3/32") |
| Corner Radius (r) | 0.2 mm / (0.008") |
| Grade | CN2000 (Mirror Finish Cermet) |
Core Performance Benefits:
- Mirror Surface Finish: Specifically designed to achieve extremely low Ra values on steel and alloy steel.
- Low Cutting Resistance: The CRT geometry reduces tool pressure, preventing deflection on thin-walled or small-diameter workpieces.
- Exceptional Heat Resistance: Maintains edge sharpness at high surface speeds where conventional carbide would soften.
- Anti-Welding Properties: Cermet's low affinity to metal prevents material sticking, ensuring consistent part quality.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Mild Steel / Carbon Steel | 150-380 m/min | 0.03-0.12 mm/rev | 0.05-0.5 mm |
| Alloy Steel (e.g., 4140) | 120-300 m/min | 0.03-0.10 mm/rev | 0.05-0.4 mm |
Compatible Tool Holders:
Optimized for use with standard 09-size triangular tool holders:
- External Swiss-Type Holders: STGCR 1212H09 / STGCR 1616H09
- Internal Precision Boring Bars: S10K-STUPR09 / S12M-STUPR09
Machinist Tip: Mastering Micro-Finishing
Optimizing your TPGH 09-series setup:
Cermet is highly effective for dry machining steel. However, it is sensitive to thermal shock. If you use coolant, ensure it is a constant, high-volume flow to prevent micro-cracking of the edge.
This ultra-small radius provides maximum precision but is delicate. Always ensure your machine spindle is balanced and your setup is rigid to avoid "chipping" the tip upon entry.
Pro Advice: If you find the surface finish is "cloudy" or dull, increase your cutting speed (Vc). Cermet requires a certain level of heat to flow through the material effectively and produce a high-gloss finish.
Packaging: 10 pieces per box.
TPGH 090202L for mirror finish, Swiss type lathe precision inserts, Korloy CN2000 cermet properties, precision turning for small diameter parts, CRT chipbreaker for fine finishing
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.