TaeguTec CNMG120404ML TT8125 | Carbide Turning Insert for Steel
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✓ Global Shipping: Delivery: generally 5–20 business days, depending on destination and shipping method.
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💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
TaeguTec CNMG120404ML TT8125
Precision Medium-Light Turning: Advanced CVD Grade for Steel Optimization
Product Overview
"Which carbide insert is best for maintaining low cutting forces while ensuring perfect chip breaking in medium-to-light steel turning?"
The TaeguTec CNMG120404ML TT8125 is a high-performance 80° rhombic insert engineered for ISO P (Steel) workpieces. Combining the versatile TT8125 CVD grade with the specialized ML (Medium-Light) chipbreaker, this tool is designed for precision. The ML geometry features a positive rake angle that significantly reduces vibration and power consumption, making it ideal for slender workpieces or setups where stability is a concern. The TT8125 grade provides the thermal stability needed for high-velocity machining in carbon and alloy steels.
Key Features
Advanced TiCN + Al2O3 coating provides a superior heat barrier and extreme resistance to plastic deformation.
Specifically designed to break chips at lower feed rates and smaller depths of cut, preventing "bird-nesting."
Sharp cutting edge reduces friction, heat buildup, and machine spindle load during operation.
Technical Specifications
Decoding the Model: CNMG120404ML
80° Rhom.
0° Relief
Tolerance
Fixing
12.9mm L
4.76mm S
0.4mm RE
Med-Light
| Unit System | Designation | Inscribed Circle (IC) | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | CNMG120404ML | 12.7 mm | 0.4 mm |
| Imperial (ANSI) | CNMG431ML | 0.500" | 0.016" |
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon Steel | 200 - 450 m/min | 0.10 - 0.35 mm/rev |
| Alloy Steel (4140) | 150 - 380 m/min | 0.10 - 0.30 mm/rev |
Compatible Holders
This insert pairs perfectly with standard DCLNR/L 12, PCLNR/L 12, and MCLNR/L 12 external turning tools.
Product Applications
- High-precision semi-finishing of small-diameter steel shafts.
- Turning operations on thin-walled components where low force is required.
- Mass production of automotive gears and alloy steel parts.
- CNC machining requiring excellent surface finish and chip control.
TaeguTec Grade Comparison (Steel)
| Grade Name | Technology | Primary Application |
|---|---|---|
| TT8125 (CVD) | Multi-Layer Al2O3 | Balanced: General purpose steel turning. |
| TT8115 (CVD) | High-Hardness Al2O3 | High Speed: Continuous, stable steel cuts. |
Why Choose TaeguTec?
TaeguTec, as a member of the IMC Group, stands at the forefront of metallurgical engineering. The TT8125 grade with ML chipbreaker is a strategic choice for shops seeking to reduce cycle times without sacrificing edge reliability. By investing in TaeguTec, you choose precision consistency that drives down your cost-per-part and maximizes machine spindle uptime.
Verified Global Feedback
"Perfect Chip Control"
Replaced our standard inserts with the ML breaker for a job with long alloy shafts. The chips break perfectly now, no more tangles!
— Manufacturing Corp (USA)"Stable Edge Life"
Very consistent performance in 4140 steel. We get a great surface finish every time. Excellent heat resistance.
— Precision GmbH (Germany)"Reliable All-rounder"
Great versatility. The low cutting force really helped with our older CNC machines. Good value.
— Industrial Machining (Japan)Frequently Asked Questions
1. Can I use TT8125 for Cast Iron (ISO K)?
While it can cut cast iron, we highly recommend TaeguTec TT7015 or TT7025 for better wear resistance in abrasive cast materials.
2. What is the benefit of the ML chipbreaker over MT?
The ML chipbreaker is sharper and generates lower forces, making it better for lighter cuts and slender parts where vibration is an issue.
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.