Taegutec TDT 4E-0.4 TT7220 Carbide Insert for Steel Turning & Grooving (10pcs)
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TaeguTec TDT 4E-0.4 TT7220
High-Speed 4.0mm Multi-Directional Insert for Maximum Productivity in Steel & Iron
Product Overview
"Which 4mm insert offers the best wear resistance for high-speed profiling and side-turning in alloy steels?"
The TaeguTec TDT 4E-0.4 TT7220 is engineered for high-efficiency multi-directional turning and grooving. While the TT9080 grade focuses on toughness for interrupted cuts, the TT7220 grade is optimized for abrasive wear resistance and thermal stability. This makes it the superior choice for high-speed finishing and medium machining of Carbon Steels (ISO P) and Gray Cast Iron (ISO K). The 4E neutral chipbreaker geometry is designed to compress and break chips effectively during both radial plunging and longitudinal turning, ensuring that your CNC turret stays clear of "bird-nesting" during long production runs.
Core Advantages
The TT7220 PVD coating allows for significantly higher cutting speeds (Vc) compared to universal grades, reducing cycle times by up to 25%.
The 0.4mm corner radius and stable T-Turn seating provide a high-quality surface finish (Ra), often eliminating the need for secondary grinding.
Switch from radial grooving to axial turning seamlessly. Perfect for complex profiling on CNC lathes and Swiss machines.
Technical Specifications
Model Decoding: TDT 4E-0.4 TT7220
T-Turn
4.0mm
Neutral
Radius
High-Speed
| Unit | Insert Width | Corner Radius | Model Reference |
|---|---|---|---|
| Metric | 4.00 mm | 0.40 mm | TDT 4E-0.4 |
| Imperial | 0.157" | 0.016" | TDT 157E-016 |
Recommended Cutting Parameters (TT7220)
| Operation | Speed (Vc) | Feed (fn) |
|---|---|---|
| Longitudinal Turning | 120 - 220 m/min | 0.12 - 0.28 mm/rev |
| Radial Grooving | 100 - 180 m/min | 0.08 - 0.20 mm/rev |
System Compatibility
Applications & Compatibility
- High-Speed Finishing: Best for finishing operations on Steel and Iron where Ra requirements are strict.
- Profiling & Undercutting: The neutral geometry allows for complex paths and relief grooving.
- Abrasive Materials: Excels in machining Gray Cast Iron (ISO K) and medium-carbon Steels.
- Hardware Support: Compatible with all T-Turn series holders and boring bars with Seat Size 4.
TaeguTec Grade Benchmarking
| Grade | ISO Field | Key Performance Factor |
|---|---|---|
| TT7220 | P, K | High-Speed Machining & Wear Resistance |
| TT9080 | P, M, K | General Purpose & Interrupted Cutting |
| TT5100 | K | Extreme CVD Resistance for Cast Iron Only |
Reliability Meets Productivity
TaeguTec's T-Turn system is the industry benchmark for multi-directional grooving. The TDT 4E-0.4 TT7220 provides the thermal stability needed for high-speed CNC environments.
"Switched from the universal grade to TT7220 for a high-volume steel project. Tool life increased by 40%."
— David K., USA"Hervorragende Oberflächengüte beim Längsdrehen. Keine Gratbildung mehr."
— Stefan W., Germany"Ottimo per la finitura di ghisa. Stabilità termica eccezionale ad alte velocità."
— Andrea B., Italy"Very consistent performance in profiling. The chips break perfectly even at higher feeds."
— Kenji O., JapanFrequently Asked Questions
A: While TT7220 can handle light interruptions, for heavy shocks or unstable setups, the TT9080 grade is recommended due to its higher substrate toughness.
A: Generally, yes. The 4.0mm width provides more lateral stability and mass, allowing for slightly higher feed rates during side-turning operations.
A: While TT7220 is thermally stable, using high-pressure coolant will significantly enhance chip evacuation and prevent notch wear during high-speed profiling.
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Looking for a taegutec equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This taegutec insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.