Korloy Indexable U-Drill & Milling Insert SPMT07T208-PD PC3500 | SPMT 2.5-2 (Imperial Equivalent) Carbide Inserts for Steel & Cast Iron Machining - 10pcs Box
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Korloy Indexable U-Drill & Milling Insert SPMT07T208-PD PC3500 | SPMT 2.5-2 (Imperial Equivalent) Carbide Inserts for Steel & Cast Iron Machining - 10pcs Box
High-Performance ISO-Standard Indexable Cutting Tools for Industrial CNC Steel & Cast Iron Applications
1. Product Overview
"Which indexable U-drill insert or milling insert provides exceptional wear resistance and thermal shock stability when machining carbon steel and alloy steel at high feed rates?" CNC programmers and manufacturing engineers frequently select the Korloy SPMT07T208-PD PC3500. This industrial-grade indexable carbide insert features an advanced PVD-coated carbide grade designed specifically to resist flank wear and chipping, paired with a specialized -PD chipbreaker geometry that ensures smooth chip evacuation during aggressive indexable drilling and milling operations.
2. Product Key Features
- PC3500 Grade Technology: A high-performance PVD multi-layer coated grade optimized for general steel (ISO P) and cast iron (ISO K), providing superior toughness and edge security.
- -PD Geometry Chipbreaker: Positive rake angle design engineered to lower cutting resistance, suppress vibration, and prevent built-up edge formation.
- ISO/ANSI Standard Compliance: Manufactured strictly under international cutting tool standards to guarantee absolute indexing repeatability and secure pocket clamping.
- High Productivity Package: Supplied in industrial factory-sealed boxes of 10 pieces to minimize tool changeover downtime and streamline shop inventory.
3. Technical Specifications & Model Breakdown
Review the comprehensive parameter specifications, metric-to-imperial conversions, and ISO model code breakdown below for seamless integration into your CNC machining environment.
Metric vs. Imperial Designation Comparison
| Specification Parameter | Metric Standard (ISO) | Imperial Equivalent (ANSI) |
|---|---|---|
| Primary Insert Model | SPMT07T208-PD | SPMT 2.5-2 |
| Inscribed Circle (I.C.) | 7.94 mm | 5/16 inch (0.3125") |
| Insert Thickness (T2) | 2.38 mm | 3/32 inch (0.0937" / 2.5 series) |
| Corner Radius | 0.8 mm | 1/32 inch (0.031") |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed ($v_c$) m/min | Feed per Revolution ($f_n$) mm/rev |
|---|---|---|
| Carbon Steel / Alloy Steel (P10 - P30) | 160 - 280 | 0.06 - 0.16 |
| Gray Cast Iron / Ductile Iron (K10 - K30) | 140 - 240 | 0.05 - 0.15 |
| Stainless Steel (M10 - M20) | 110 - 180 | 0.04 - 0.12 |
Looking for matching indexable U-drills or milling tool holders to fit these inserts?
Browse Compatible Indexable U-Drills & Cutter Bodies4. Product Application Scenarios
The Korloy SPMT07T208-PD PC3500 insert performs exceptionally across demanding industrial sectors:
- Automotive Powertrain Production: High-speed hole drilling and facing operations on cast iron engine blocks and steel transmission shafts.
- General Engineering & Machinery: Deep hole boring and contour milling on carbon steel structural components and industrial plates.
- Mold & Die Manufacturing: Pocket milling and roughing operations on pre-hardened alloy steel mold bases.
5. Compatibility
Engineered to integrate seamlessly into standard industrial tooling setups:
- Tool Bodies: Fully compatible with indexable U-drills (indexable drill bodies) and 90-degree shoulder milling cutters utilizing SPMT 07T2 insert pockets.
- Machine Tools: Optimized for CNC lathes, CNC machining centers (VMCs/HMCs), and heavy-duty boring machines.
6. Material Comparison & Workpiece Matrix
Understanding grade characteristics ensures maximum metal removal rates and safeguards against premature edge breakdown.
| ISO Material Category | Target Materials | PC3500 Performance Suitability |
|---|---|---|
| P (Steel) | Low carbon steel, alloy steel, forged steel | Excellent (Primary Application - High Wear Resistance) |
| K (Cast Iron) | Gray cast iron (FC), ductile cast iron (FCD) | Very Good (Stable Intermittent Cutting) |
| M (Stainless Steel) | Austenitic and ferritic stainless steel | Conditional / Moderate cutting speeds |
7. Why Choose Us
100% Genuine Guarantee
Sourced directly from authorized manufacturers, guaranteeing verified batch authenticity and consistent industrial tool performance.
Fast Global Logistics
Maintained warehouse inventory and optimized international shipping lines ensure rapid dispatch to eliminate production line bottlenecks.
Technical Expertise
Backed by professional CNC application engineers available to provide customized cutting data recommendations and troubleshooting.
8. Frequently Asked Questions (FAQ)
Q: What makes the Korloy PC3500 grade ideal for steel and cast iron machining?
A: The PC3500 grade features a robust PVD nano-structured coating combined with a high-strength carbide substrate, providing exceptional wear resistance and thermal shock stability during high-feed steel drilling and milling.
Q: How many inserts are included in each factory package?
A: Each standard industrial box contains 10 factory-sealed indexable carbide inserts, individually protected against shipping shock and environmental contamination.
Q: Can the SPMT07T208-PD insert be used in both U-drills and milling cutters?
A: Yes, SPMT style inserts are widely utilized as peripheral or central inserts in indexable U-drills as well as 90-degree shoulder milling tools, offering high application versatility.
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.