Taegutec TDXU 4E-0.4 TT7220 Insert for Stainless Steel Turning & Grooving (10pcs)
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TaeguTec TDXU 4E-0.4 TT7220 Multi-Directional Insert
Premium 4.0mm Width Solution for Stainless Steel & Exotic Alloys
Product Overview
"Which insert is the most reliable for side-turning and grooving in gummy 316 Stainless Steel?"
The TaeguTec TDXU 4E-0.4 TT7220 is a high-performance, double-ended 4.0mm multi-directional insert from the legendary T-Clamp family. Engineered specifically for ISO M (Stainless Steel) and ISO S (Heat-Resistant Alloys), the TT7220 PVD-coated grade features a sub-micron substrate with high toughness. Its XU geometry is designed for versatility, allowing operators to perform radial grooving and longitudinal turning (side-turning) with a single tool, significantly reducing cycle times and inventory costs.
Key Features
TT7220 Stainless Specialist
Advanced PVD coating provides exceptional resistance to built-up edge and notch wear, common in stainless steel machining.
Multi-Directional Versatility
Optimized XU-type chipbreaker allows for smooth chip evacuation during both plunging and side-turning operations.
Reinforced 0.4 Radius
The 0.4mm corner radius offers the perfect balance between edge strength and surface finish quality.
Technical Specifications
Understanding the Model: TDXU 4E-0.4
| Unit | Model Number | Width (W) | Radius (R) |
|---|---|---|---|
| Metric | TDXU 4E-0.4 | 4.00 mm | 0.40 mm |
| Imperial | TDXU 157E-016 | 0.157" | 0.016" |
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Stainless Steel (ISO M) | 70 - 150 m/min | 0.05 - 0.20 mm/rev |
| High Temp Alloys (ISO S) | 30 - 60 m/min | 0.04 - 0.15 mm/rev |
Compatible Toolholders:
Fits all T-Clamp TTER/L and TTIR/L Holders with Seat Size 4.
Industrial Applications
- Aerospace: Turning components from Inconel and Titanium alloys.
- Medical: Precision grooving of stainless steel orthopedic implants.
- Oil & Gas: Machining of duplex stainless steel valves and fittings.
- General CNC: Multi-functional use for any 4mm grooving and side-turning task.
Material Grade Comparison (TaeguTec)
| Grade | Coating | Primary Application | Characteristics |
|---|---|---|---|
| TT7220 | PVD | Stainless / Super Alloys | High toughness, prevents built-up edge. |
| TT9080 | PVD | Universal Steel / SS | Standard versatile grade for general use. |
| TT8020 | PVD | Cast Iron / Steel Finishing | Wear-resistant grade for higher speeds. |
Why Choose Us
We provide 100% authentic TaeguTec CNC tooling directly to your shop. Our technical team ensures you get the right parameters for your specific machine setup.
"Excellent tool life in Duplex 2205. The side turning capability saved us 30% cycle time per part."
— James T., USA
"Der TT7220 ist perfekt für Edelstahl. Wir hatten keine Probleme mit Aufbauschneiden mehr."
— Hans G., Germany
"Ottimo inserto per Inconel. La larghezza di 4mm è molto stabile."
— Luca R., Italy
"Very predictable wear patterns. Makes CNC lights-out production much safer."
— Kenji Y., Japan
Frequently Asked Questions
Q: Can I use this for longitudinal turning?
A: Yes. The XU geometry is specifically designed for both radial grooving and side-turning (longitudinal) movements.
Q: Is TT7220 suitable for interrupted cuts?
A: Yes, TT7220 is a high-toughness PVD grade that performs exceptionally well in interrupted cut conditions on stainless steel.
Q: What toolholder seat size do I need?
A: This insert requires a toolholder with Seat Size 4 (for 4.0mm 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.