Korloy WCMT06T308-C20N PC5335 Heavy-Duty Large U-Drill Insert (10pcs)
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The Original Korloy WCMT06T308-C20N PC5335 (ANSI: WCMT 432) is the premier Heavy-Duty Indexable Drill Insert in the Korloy lineup. Specifically engineered for Large-Diameter Shallow Hole Machining, the 06T3 size provides a massive 3.97mm thickness to ensure maximum edge integrity under extreme cutting forces. Utilizing the PC5335 PVD Grade, this insert thrives in heavy industrial environments, offering unmatched reliability when drilling through tough carbon steels, alloy steels, and austenitic stainless steels.
Maximum Edge Strength: In large-hole drilling, the outer insert endures incredibly high linear speeds. The WCMT 06T3's reinforced carbide substrate and advanced PVD coating are designed to resist plastic deformation and thermal cracking, even during continuous heavy-feed operations.
Technical Specifications (Metric & ANSI):
| ISO Designation | WCMT 06T308-C20N |
| ANSI Designation | WCMT 432 |
| Thickness (S) | 3.97 mm |
| Corner Radius (r) | 0.8 mm |
| Grade | PC5335 (Premium Tough PVD) |
| Target Diameter | D33mm - D50mm+ U-Drills |
Core Performance Benefits:
- Unrivaled Structural Integrity: The 3.97mm thickness is designed to prevent "insert crushing" during high-torque, large-diameter breakthroughs.
- Universal PC5335 Performance: A true multi-material grade that excels in Steel (P), Stainless (M), and Cast Iron (K), simplifying inventory for heavy machine shops.
- Aggressive C20N Geometry: Specifically tuned for large-volume chip removal. It curls thick chips tightly, preventing them from scarring the borehole or tangling with the drill body.
- Exceptional Heat Resistance: The multi-layer TiAlN coating acts as a thermal barrier, preserving the cutting edge during the long cycle times required for deep, large-diameter holes.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Low/Med Carbon Steel | 110 - 210 m/min | 0.08 - 0.20 mm/rev |
| Stainless Steel (316/Duplex) | 80 - 160 m/min | 0.06 - 0.16 mm/rev |
Pro Tip: Heavy-Duty Drilling Success
Drilling with WCMT 06T3 inserts requires massive spindle power. Ensure your CNC has sufficient low-end torque to maintain constant surface speed during the full engagement of the drill.
When drilling large holes, increase coolant concentration to at least 10%. The added lubrication is vital for the C20N breaker to smoothly eject large, thick chips from the cavity.
Packaging: 10 pieces per box.
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