Korloy SPMT060205-PD PC3500 Square U-Drill & Milling Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy SPMT060205-PD PC3500 is a robust Square Indexable Insert designed for heavy-duty Indexable U-Drills and high-feed milling cutters. The PC3500 Grade features a specialized thick CVD coating that excels in the High-Speed Machining of Steel (P-Group). With a precision-engineered 0.5mm corner radius and the "PD" chipbreaker, this insert provides the perfect balance of edge strength and smooth chip evacuation for large-diameter hole making.
Engineered for Productivity: PC3500 is the industry standard for steel drilling. Its multi-layer CVD coating (TiCN+Al2O3+TiN) acts as a high-performance thermal barrier, allowing for increased spindle speeds without rapid crater wear.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Designation | SPMT060205-PD |
| Corner Radius (r) | 0.5 mm |
| Grade | PC3500 (CVD Coated for Steel) |
| Coating | CVD (Thick-film Technology) |
Core Performance Benefits:
- Maximum Speed: The CVD grade thrives at high peripheral speeds, making it ideal for the outboard pocket of U-drills.
- Enhanced Chip Control: The PD chipbreaker curls chips into tight spirals, preventing "chip packing" in the drill flutes.
- Edge Durability: The 0.5mm radius is reinforced to handle the high axial forces found in drilling deep holes in alloy steel.
- Universal Versatility: While primarily for drilling, it is equally effective in indexable end mills for steel facing and shoulder work.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn/fz) |
|---|---|---|
| Carbon Steel (Soft) | 180 - 320 m/min | 0.07 - 0.16 mm/rev |
| Alloy Steel (4140/SCM440) | 140 - 260 m/min | 0.06 - 0.14 mm/rev |
| Die/Tool Steel | 90 - 180 m/min | 0.05 - 0.12 mm/rev |
Compatible Tooling Systems:
Maximize performance by using these professional-grade holders:
- Indexable U-Drills: King Drill (21.5mm - 27mm range)
- Indexable Milling Cutters: SPMT Series Face Mills & End Mills
Machinist Tip: The Steel Drilling Advantage
Why choose PC3500 for your SPMT060205 inserts?
The Wear Specialist. Best for high-production steel runs. The thick CVD coating handles the extreme heat generated at the outer diameter of a U-drill, where PVD grades often fail early.
The Toughness Specialist. Better for stainless steel or interrupted milling. Use PC5300 if you see edge chipping rather than smooth wear on your PC3500 inserts.
Pro Advice: For indexable drilling, ensure internal coolant pressure is at least 15-20 bar. This is critical for PC3500 to maintain its thermal stability and flush chips out of 3D and 4D deep holes.
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.