Taegutec SPMG090408DG TT8020 Carbide Insert for CNC U-Drill (10pcs)
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TaeguTec SPMG090408DG TT8020
Master of Deep Hole Stability: Precision Drilling in Steel and Stainless Steel
Product Overview
"Which indexable insert provides the highest reliability for deep-hole drilling in alloyed steels while maintaining excellent chip fragmentation?"
The TaeguTec SPMG090408DG TT8020 is a heavy-duty indexable drilling insert designed for the TOPDRILL and DrillRush series. The TT8020 grade features an advanced multi-layered PVD coating that excels in ISO P (Steel) and ISO M (Stainless Steel) applications, offering superior resistance to thermal cracking and adhesive wear. The DG chipbreaker is specifically engineered with a high-positive rake angle to force chips into a compact "C" shape, ensuring they are easily flushed out by coolant even in high-aspect-ratio holes.
Core Advantages
A sub-micron substrate combined with a high-AlTiN coating ensures exceptional hardness and oxidation resistance at high cutting temperatures.
The DG geometry is optimized for drilling stability, reducing vibration and ensuring smooth chip evacuation in both vertical and horizontal setups.
A reinforced 0.8mm corner radius provides the necessary durability to withstand the variable forces found in indexable drilling.
Technical Specifications
Designation Decoding: SPMG 090408 DG
Square
11° Relief
Tol. Class M
W/ Hole
9.8mm L
4.3mm T
0.8mm RE
| Standard | Model | Side Length (L) | Thickness (S) |
|---|---|---|---|
| Metric | SPMG 090408 DG | 9.80 mm | 4.30 mm |
| Imperial | SPMG 3(3.5)2 DG | 0.386" | 0.169" |
Recommended Cutting Parameters
| Material Group | Vc (m/min) | fn (mm/rev) |
|---|---|---|
| Low Carbon Steel (P) | 140 - 260 | 0.07 - 0.16 |
| Stainless Steel (M) | 90 - 180 | 0.06 - 0.12 |
Matched Tooling Bodies
This insert is precision-matched for TaeguTec TOPDRILL and DrillRush bodies (Size 09).
Industrial Applications
- High-efficiency hole making in structural steel frameworks.
- Production drilling for automotive and heavy equipment components.
- Reliable machining of stainless steel pipes and manifolds.
- Suitable for CNC lathes and vertical machining centers (VMC).
TaeguTec Grade Comparison Tip
Optimized for universal drilling. High toughness and wear resistance for Steel & Stainless.
Maximum toughness grade. Best for interrupted cuts or very unstable machining setups.
Global Trust in TaeguTec SPMG
Machinists worldwide rely on the SPMG09 series for consistent hole quality and long tool life. By using the TT8020 grade, you ensure that your production line remains uninterrupted, reducing the cost-per-hole and maximizing profit margins. TaeguTec's DG geometry represents the perfect synergy of chip control and edge stability.
"Superior Tool Life" - These inserts easily outlasted our previous brand in 4140 steel. Predictable wear patterns.
— Lead Machinist (USA)Die DG-Geometrie bricht die Späne perfekt. Keine Probleme mehr mit Spänestau.
— Fertigungsleiter (Germany)Grado TT8020 eccellente per acciaio inox. Ottimo rapporto qualità-prezzo.
— Officina Meccanica (Italy)Reliable performance for high volume production. Reduced our downtime significantly.
— CNC Tech (Japan)Frequently Asked Questions
1. Can I use the same insert for both inner and outer pockets?
Yes, the square SPMG design allows the same insert type to be used in both pockets of compatible indexable drills, simplifying inventory.
2. Is coolant through required for these inserts?
High-pressure internal coolant is strongly recommended for drilling to ensure proper chip evacuation and to maximize the performance of the TT8020 coating.
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.