Korloy DCMT11T308-HMP NC3020 Steel Turning Insert, R0.8 (10pcs)
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The Original Korloy DCMT11T304-HMP NC3020 (ANSI Standard: DCMT 32.52) is a robust 55° diamond turning insert engineered for high-efficiency semi-finishing of Steel (P) and Carbon Steel. Featuring a strong 0.8mm (1/32") nose radius, this insert offers the highest edge security in the DCMT 11T3 range. The NC3020 CVD coating provides a superior thermal barrier and exceptional wear resistance, making it the primary choice for high-speed continuous cutting where productivity and long tool life are critical.
High-Efficiency Performance: The R0.8 radius allows for significantly higher feed rates compared to smaller radii, making it perfect for rapid stock removal in steel while still maintaining an excellent surface finish thanks to the HMP chipbreaker.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | DCMT11T308-HMP |
| ANSI Code | DCMT 32.52 |
| Grade | NC3020 (Premium CVD for Steel) |
| Nose Radius | 0.8 mm (Maximum Edge Strength) |
Core Performance Benefits:
- Maximum Edge Toughness: The 0.8mm radius dissipates heat over a larger area and resists chipping better than R0.2 or R0.4 models.
- HMP Chipbreaker: Optimized for semi-finishing to light roughing, ensuring smooth chip flow and preventing "bird-nesting" at higher feeds.
- High Speed Stability: The NC3020 CVD coating allows for increased surface speeds (Vc), reducing cycle times in mass production.
- Superior Wear Resistance: Excellent protection against crater and flank wear during the machining of abrasive carbon and alloy steels.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Low Carbon/Mild Steel | 200 - 380 m/min | 0.15 - 0.40 mm/rev | 0.8 - 3.5 mm |
| Alloy Steel (4140 / 4340) | 180 - 300 m/min | 0.12 - 0.35 mm/rev | 0.8 - 3.0 mm |
| Cast Steel / Mold Steel | 120 - 240 m/min | 0.15 - 0.30 mm/rev | 1.0 - 4.0 mm |
Compatible Tool Holders:
Fits all standard 55-degree diamond tool holders for 11T3 size:
- External Holders: SDJCR/L 2020K11 / 2525M11 / 3232P11
- Internal Boring Bars: S20R-SDUCR11 / S25S-SDUCR11 / S32T-SDUCR11
Steel Machining Tip: Choosing your Radius
Why select the R0.8 (DCMT11T308) over smaller sizes?
Ideal for semi-roughing and high-feed finishing. It handles interrupted cuts better and is much more durable on larger, heavier workpieces.
The versatile standard. Choose this if you need a mix of high-quality finish and lower cutting pressure for smaller or less rigid machine setups.
Pro Insight: Use the R0.8 when you want to "push" the machine. Because it allows for a larger feed rate, you can significantly decrease your part cycle time without sacrificing tool life.
Packaging: 10 pieces per box.