Taegutec SPMG07T308DG TT9030 Carbide Insert for CNC U-Drill (10pcs)
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TaeguTec SPMG07T308DG TT9030
Engineered for Impact: The Ultimate "Problem Solver" for Unstable Drilling Conditions
Product Overview
"When standard inserts chip under vibration or interrupted cuts, the TT9030 grade keeps your production moving."
The TaeguTec SPMG07T308DG TT9030 is a specialized indexable drilling insert designed for the TOPDRILL and DrillRush systems. While standard inserts prioritize wear resistance, the TT9030 grade is built for toughness. It features a unique PVD coating over a shock-resistant substrate, making it the primary choice for drilling through interrupted cuts, cross-holes, or angled entries. The DG chipbreaker and 0.8mm corner radius provide a reinforced edge that withstands the high radial forces common in ISO P (Steel) and ISO M (Stainless Steel) applications where stability is not guaranteed.
Core Advantages
A "toughness-first" grade that prevents catastrophic failure in setups with high vibration or varying material hardness.
Optimized for reliable chip formation, ensuring small, manageable chips that flush easily out of the flute.
The 0.8mm corner radius offers significantly higher edge strength compared to smaller radii, perfect for heavy-duty entry loads.
Technical Specifications
ISO Designation Decoding: SPMG 07T308 DG
Square
11° Relief
Tol. Class M
W/ Hole
7.94mm L
3.97mm T
0.8mm RE
| Standard | Model | Side Length (L) | Thickness (S) |
|---|---|---|---|
| Metric | SPMG 07T308 DG | 7.94 mm | 3.97 mm |
| Imperial | SPMG 2.533 DG | 0.312" | 0.156" |
Recommended Cutting Parameters (TT9030)
| Material Group | Vc (m/min) | fn (mm/rev) |
|---|---|---|
| Alloy Steel / Impacts (P) | 80 - 180 | 0.06 - 0.14 |
| Stainless Steel / Gummy (M) | 60 - 140 | 0.05 - 0.12 |
Matched Drill Bodies
This insert is precision-matched for TaeguTec TOPDRILL bodies in the Size 07 pocket range.
Industrial Applications
- Drilling through cross-holes or existing bores where interruptions occur.
- Machining of forged components with uneven surface skins.
- Ideal for setups with long tool overhangs where vibration is a factor.
- Stainless steel valve bodies and structural steel drilling.
TaeguTec Grade Comparison
Highest resistance to chipping and thermal shock. Use for interrupted cuts.
Optimized for wear resistance. Best for stable, continuous drilling at higher speeds.
Field Performance Reports
Machinists globally rely on the SPMG07T308DG TT9030 for "problem" jobs. When the workpiece is valuable and the drilling path is unpredictable, the TT9030 grade provides the security needed to prevent insert breakage that could scrap an entire component.
"Drilling 4140 with cross-holes used to kill our inserts. TT9030 fixed it instantly."
— Machine Shop Lead (USA)Sehr zähe Wendeschneidplatte. Perfekt für instabile Aufspannungen.
— Fertigungstechniker (Germany)Ottima resistenza agli urti. Ideale per forature interrotte su acciaio inox.
— Operatore CNC (Italy)Frequently Asked Questions
1. When should I choose the DG chipbreaker over others?
The DG geometry is the "General Purpose" drilling chipbreaker. It provides a perfect balance between cutting force reduction and chip fragmentation across a wide range of materials.
2. Can I use these for stack drilling?
Yes. TT9030 is actually preferred for stack drilling because it handles the impact and "clicking" between plates better than more brittle wear-resistant grades.
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.