Taegutec SPMG110408DG TT8020 Carbide Insert for CNC U-Drill (10pcs)
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TaeguTec SPMG110408DG TT8020
High-Load Drilling Excellence: Optimized for Steel and Stainless Steel Productivity
Product Overview
"Which indexable insert offers the best balance of edge strength and chip evacuation for large-diameter drilling in difficult materials?"
The TaeguTec SPMG110408DG TT8020 is a robust indexable drilling insert designed for the TOPDRILL and DrillRush systems. As part of the 11mm size family, it is built to handle higher cutting loads and larger hole diameters. The TT8020 grade is a specialized PVD-coated carbide that provides superior heat shield protection, making it the primary choice for ISO P (Steel) and ISO M (Stainless Steel). Featuring the DG chipbreaker, this insert ensures stable chip fragmentation, preventing "bird-nesting" even during deep-hole drilling where chip evacuation is critical.
Core Advantages
High-AlTiN multi-layer coating offers extreme hardness and prevents chemical wear when machining gummy stainless steels.
Engineered to balance radial forces, the DG geometry minimizes spindle vibration and improves hole cylindricity.
The 4.76mm thickness and reinforced edge prep are designed to withstand the high torque and feed rates of larger drilling operations.
Technical Specifications
ISO Designation Decoding: SPMG 110408 DG
Square
11° Relief
Tol. Class M
W/ Hole
11.5mm L
4.76mm T
0.8mm RE
| System | Model | Side Length (L) | Thickness (S) |
|---|---|---|---|
| Metric | SPMG 110408 DG | 11.50 mm | 4.76 mm |
| Imperial | SPMG 432 DG | 0.452" | 0.187" |
Recommended Cutting Parameters
| Material Group | Vc (m/min) | fn (mm/rev) |
|---|---|---|
| Alloy Steel (P) | 130 - 240 | 0.08 - 0.18 |
| Stainless Steel (M) | 80 - 160 | 0.07 - 0.14 |
Compatible Drilling Bodies
Optimized for TaeguTec TOPDRILL and DrillRush bodies (Size 11).
Industrial Applications
- Heavy machinery frame drilling in Carbon/Alloy Steel.
- Petrochemical flange manufacturing in Stainless Steel.
- Power generation turbine housing components.
- Large-batch production on horizontal and vertical CNC centers.
TaeguTec Drilling Grade Guide
The universal standard. Excels in heat resistance and edge stability for Steel/Stainless.
The toughest choice. Optimized for interrupted cuts and high-vibration drilling environments.
Global Machinist Approval
The SPMG110408DG insert provides the "heavy-lifting" capability required for high-torque drilling. By utilizing the TT8020 grade, shops can maintain higher cutting speeds while extending tool life by up to 30% compared to standard grades. The DG geometry ensures that even at 11mm size, chips remain small and evacuation remains effortless.
"Drilled 500+ holes in 316 Stainless without a single failure. The DG geometry is a lifesaver."
— Production Lead (USA)Hervorragende Standzeit in legiertem Stahl. Beste Wahl für unsere Großserienfertigung.
— CNC Spezialist (Germany)Ottimo grado TT8020. Resistenza termica eccellente su acciai tenaci.
— Officina Meccanica (Italy)Reliable and consistent. We use these for all our heavy drilling operations.
— Tooling Engineer (Japan)Frequently Asked Questions
1. Can I use the SPMG 11 for stack drilling?
Stack drilling is possible, but we recommend reducing the feed rate by 20-30% during the breakthrough phase between plates to prevent edge chipping.
2. What is the benefit of the 0.8mm radius over a 0.4mm?
The 0.8mm corner radius provides significantly more edge strength and better heat dissipation, which is vital for the higher feed rates used with SPMG 11 inserts.
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.