Taegutec TDT 8.00E-1.20 TT7220 Insert for Heavy Steel Turning & Grooving (10pcs)
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TaeguTec TDT 8.00E-1.20 TT7220
Heavy-Duty 8.0mm Multi-Directional PVD Insert for Steel & Iron Production
Product Overview
"Which 8mm insert provides the best heat resistance for high-speed multi-directional turning in alloy steels?"
The TaeguTec TDT 8.00E-1.20 TT7220 is an industrial-grade solution for heavy material removal. With an 8.0mm width and a robust 1.20mm corner radius, this insert is designed for high-stability axial turning and radial grooving. The TT7220 grade is a premium PVD-coated carbide that features excellent thermal stability and wear resistance, making it the top choice for Carbon Steel (ISO P) and Cast Iron (ISO K). The E-type neutral geometry combined with the TT7220 coating allows for consistent chip breaking even at the high temperatures generated by high-speed CNC production lines.
Key Features
Advanced sub-micron substrate with multi-layer PVD coating provides extreme resistance to notch wear and plastic deformation.
Massive 8.0mm width allows for aggressive feed rates and high-depth axial turning without compromising tool integrity.
Optimized for profiling, side-turning, and plunging, reducing cycle time by eliminating unnecessary tool changes.
Technical Specifications
Model Decoding: TDT 8.00E-1.20 TT7220
T-Turn
Width (mm)
Neutral
Radius (mm)
PVD Grade
| Unit System | Width (W) | Corner Radius | Model Reference |
|---|---|---|---|
| Metric | 8.00 mm | 1.20 mm | TDT 8.00E-1.20 |
| Imperial | 0.315" | 0.047" | TDT 315E-047 |
Recommended Cutting Data (TT7220 Grade)
| Material | Vc (m/min) | fn (mm/rev) |
|---|---|---|
| Carbon Steel | 160 - 240 | 0.15 - 0.40 |
| Gray Cast Iron | 140 - 220 | 0.18 - 0.45 |
Seating & Tooling
Applications & Compatibility
- Industrial Shafts: High-feed side turning on large-diameter carbon steel shafts.
- Heavy Profiling: Generating complex contours and fillets in cast iron housings.
- Deep Grooving: Stable 8.0mm plunging in alloy steels.
- Hardware Compatibility: Fits all TaeguTec T-Turn series holders (External & Boring Bars) with Seat Size 8.
TaeguTec Grade Comparison Matrix
| Grade | ISO Field | Coating | Primary Strength |
|---|---|---|---|
| TT7220 | P, K | PVD | High Speed & Steel Wear Resistance |
| TT9080 | P, M, K | PVD | Toughness & Universal Applications |
| K10 | N, K | None | Sharpness for Aluminum Finishing |
Why Machinists Trust TaeguTec
The TDT 8.00E-1.20 TT7220 represents the pinnacle of multi-directional turning technology. By combining a wide-body profile with advanced PVD heat-shielding, TaeguTec allows you to push your CNC machines to their absolute limit while maintaining surgical accuracy.
"TT7220 handles the heat exceptionally well. We've seen a 30% increase in tool life on our 4140 steel shafts."
— James K., USA"Sehr stabiler Plattensitz. Die 8mm Breite ermöglicht enorme Vorschübe bei der Gussbearbeitung."
— Dieter R., Germany"Prestazioni costanti. Ottima per la tornitura laterale su pezzi di grandi dimensioni."
— Antonio V., Italy"Reduced our cycle time significantly. The PVD coating is very durable against notch wear."
— Takashi M., JapanFrequently Asked Questions
A: While TT7220 is very wear-resistant, for heavy interrupted cuts, we recommend switching to the TT9080 grade for better impact toughness.
A: In stable conditions, you can achieve an axial turning depth (Ap) of 1.5mm - 4.5mm in most carbon steels.
A: TT7220 performs exceptionally well with flood coolant, but high-pressure coolant will further extend tool life in high-temp steel machining.
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.