Taegutec TDC4 TT7220 Carbide Grooving Insert for Steel Parting (10pcs)
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TaeguTec TDC4 TT7220
High-Rigidity 4.0mm Solution for High-Speed Steel & Cast Iron Machining
Product Overview
"Which 4mm parting insert provides the best thermal stability for high-velocity cutting of alloy steels and cast iron?"
The TaeguTec TDC4 TT7220 is a precision-engineered, double-ended 4mm insert designed for high-productivity Parting and Grooving. Utilizing the advanced TT7220 PVD grade—a specialized coating optimized for heat resistance—this tool is the industry benchmark for ISO P (Steel) and ISO K (Cast Iron). The 4.0mm width provides massive lateral stability, allowing for deeper radial cuts and higher feed rates without the risk of blade deflection. Its TDC chipbreaker geometry effectively compresses and narrows the chips, ensuring they exit the groove without marring the surface finish of the workpiece.
Core Advantages
Specially developed PVD coating that maintains edge hardness at high cutting temperatures, preventing plastic deformation.
The 4mm insert width offers significantly higher resistance to twisting forces compared to 2mm or 3mm variants, ideal for large bar work.
The concave TDC breaker ensures chips are narrower than the slot, providing zero-friction evacuation in deep grooving.
Technical Specifications
Model Decoding: TDC 4 TT7220
TaeguTec
Double Edge
Chipbreaker
4.0mm Width
Steel PVD
| Unit | Insert Width (W) | Metric Model | Imperial Model |
|---|---|---|---|
| Metric | 4.00 mm | TDC 4 | - |
| Imperial | 0.157" | - | TDC 157 |
Recommended Cutting Parameters (TT7220)
| Material Group | Speed (Vc m/min) | Feed (fn mm/rev) |
|---|---|---|
| Alloy Steel (P) | 130 - 260 | 0.10 - 0.25 |
| Cast Iron (K) | 110 - 210 | 0.12 - 0.28 |
Required Tooling
Applications & Compatibility
- Heavy Duty Parting: Optimized for solid bars up to 80mm+ diameter.
- Industrial Grooving: High stability for deep grooves in large components.
- High-Speed Production: Best performance in high-velocity CNC cycles.
- System Compatibility: Designed for TaeguTec T-Clamp series (Seat Size 4).
Grade Performance Comparison
| Grade | ISO Area | Coating Type | Best For |
|---|---|---|---|
| TT7220 | P, K | Advanced PVD | High Velocity / Steel & Iron |
| TT9030 | P, M, K, S | Universal PVD | General Purpose / Toughness |
Why Choose Our Tooling
Authentic TaeguTec tooling provides industrial-grade repeatability. We supply high-precision inserts that ensure your spindle uptime is maximized while reducing the cost-per-cut in heavy-duty applications.
"The 4mm width is incredibly stable. We use the TT7220 grade for all our high-speed steel parting on the Mazak."
— Robert D., USA"Hervorragend für Gusseisen. Standzeit ist im Vergleich zu Wettbewerbern fast doppelt so hoch."
— Dieter S., Germany"La migliore stabilità laterale che abbia mai provato per scanalature profonde."
— Andrea M., Italy"Great performance on alloyed steel. Chips are broken perfectly."
— Hiroshi K., Japan"Authentic product. The TDC4 handles heavy feeds much better than the 3mm version."
— Thomas G., UKFrequently Asked Questions
A: No. TDC4 requires a "Seat Size 4" holder due to the wider insert pocket dimensions.
A: TT7220 is optimized for Steel and Cast Iron. For Stainless Steel, we recommend the TT8020 grade.
A: For light interruptions it works well, but for heavy interruptions (hex bars), the TT9080 grade is preferred.
Need Help With taegutec Inserts?
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.