Korloy SPMT130410-PD PC3500 Extra Large U-Drill & Milling Insert (10pcs)
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The Original Korloy SPMT130410-PD PC3500 is the powerhouse of the Square Indexable Insert family, specifically designed for large-capacity Indexable U-Drills and heavy-duty face milling cutters. The PC3500 Grade is Korloy's premier CVD-coated carbide solution for Heavy-Duty Steel (P-Group) Machining. With a massive 1.0mm corner radius and reinforced "PD" chipbreaker, this insert is built to conquer the highest cutting forces in large-scale industrial manufacturing.
Built for the Big Jobs: When drilling holes exceeding 45mm in diameter, heat and torque are extreme. The SPMT13 size provides the necessary physical mass to dissipate heat, while the PC3500 CVD coating ensures the cutting edge remains stable at high surface speeds.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | SPMT130410-PD |
| Corner Radius (r) | 1.0 mm (Maximum Strength) |
| Thickness | 4.76 mm |
| Grade | PC3500 (Advanced CVD Steel Grade) |
Core Performance Benefits:
- Maximum Edge Toughness: The 1.0mm radius (R10) provides a massive cutting edge that resists chipping even under heavy intermittent loads.
- CVD Thermal Shield: Multi-layer coating technology allows for high-speed operation in carbon and alloy steels without rapid crater wear.
- Superior Chip Breaking: The PD geometry is optimized for the thick, heavy chips generated by 13mm inserts, ensuring they don't clog the large flutes of 50mm+ drills.
- Extreme Stability: The increased thickness (4.76mm) prevents insert fracturing during deep-hole drilling in tough forgings and castings.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn/fz) |
|---|---|---|
| Low Carbon/Mild Steel | 160 - 280 m/min | 0.10 - 0.25 mm/rev |
| Alloy Steel (4140/SCM440) | 120 - 220 m/min | 0.08 - 0.20 mm/rev |
| Cast Steel / Heavy Forgings | 80 - 160 m/min | 0.08 - 0.18 mm/rev |
Compatible Heavy-Duty Systems:
Precision-matched for large-scale tooling:
- Large Indexable Drills: King Drill (45mm - 60mm range)
- Heavy Face Mills: Large Diameter Indexable Cutters for SPMT13
Machinist Tip: Dominating Large Hole Drilling
Optimizing the SPMT130410 PC3500 for maximum performance:
The Outer Edge Hero. On a 50mm drill, the outer insert experiences intense speed. Using a CVD grade like PC3500 is non-negotiable here; PVD grades will soften and fail prematurely under this thermal load.
Structural Strength. The 1.0mm radius isn't just for finish; it provides a much larger cross-section at the corner, which is where the highest axial and radial pressures converge during heavy drilling.
Pro Advice: Large U-drills require immense coolant volume. Ensure your machine can deliver high-pressure flow through the tool to keep the SPMT13 inserts cool and, more importantly, to eject the massive chips produced at 0.20mm+ feeds.
Packaging: 10 pieces per box.
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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.