Taegutec SPMG060204DG TT7400 Carbide Insert for CNC U-Drill (10pcs)
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TaeguTec SPMG060204DG TT7400
Precision at Speed: The CVD Performance Grade for High-Volume Steel Drilling
Product Overview
"When your setup is stable and cycle time is the priority, the TT7400 grade allows for significantly higher cutting speeds."
The TaeguTec SPMG060204DG TT7400 is a precision 6mm indexable drilling insert engineered for the TOPDRILL series. Unlike the tough-focus PVD grades, the TT7400 is a CVD-coated grade designed specifically for high-speed machining in stable environments. It offers exceptional wear resistance and thermal stability, making it the ideal choice for high-volume production in Carbon Steel and Alloy Steel (ISO P). The DG chipbreaker provides a sharp, positive cutting action that minimizes power consumption while ensuring excellent chip fragmentation for deep-hole evacuation.
Core Advantages
Thick CVD layer provides a superior thermal barrier, allowing the insert to maintain edge sharpness at high surface speeds (Vc).
Optimized for reduced cycle times. Best used when the workpiece is securely clamped and the drilling path is continuous.
Precisely balanced for small-diameter pockets, preventing chip clogging and reducing the risk of drill body damage.
Technical Specifications
ISO Designation Decoding: SPMG 060204 DG
Square
11° Relief
Tol. Class M
W/ Hole
5.80mm L
2.38mm T
0.4mm RE
| Standard | Model | Side Length (L) | Thickness (S) |
|---|---|---|---|
| Metric | SPMG 060204 DG | 5.80 mm | 2.38 mm |
| Imperial | SPMG 21.51 DG | 0.228" | 0.094" |
Recommended Cutting Parameters (TT7400)
| Material Group | Vc (m/min) | fn (mm/rev) |
|---|---|---|
| Low Carbon Steel (P) | 150 - 280 | 0.05 - 0.12 |
| Alloy Steel (P) | 120 - 220 | 0.05 - 0.10 |
Matched Drill Bodies
This insert is precision-matched for TaeguTec TOPDRILL bodies in the Size 06 pocket range.
Industrial Applications
- High-volume production of automotive steel components.
- Continuous drilling in carbon steel plates and blocks.
- Ideal for modern CNC machines with high spindle RPM capabilities.
- Best suited for setups where internal coolant is consistently available.
Choosing Your Grade
CVD coated. Use for high Vc and stable steel drilling. Maximum wear resistance.
PVD coated. Use for interrupted cuts, stainless steel, and unstable setups.
Frequently Asked Questions
1. Can I use TT7400 for drilling stainless steel?
TT7400 is optimized for Steel (ISO P). For Stainless Steel (ISO M), the TT9030 grade is generally recommended due to its PVD coating and higher resistance to built-up edge.
2. What is the benefit of the CVD coating on such a small insert?
It allows you to push the RPM much higher. Since 6mm drills require high RPM to reach optimal surface speeds, the CVD coating prevents the edge from burning up.
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.