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Elite Uncoated Cermet for Mirror-Finish Steel Turning
Product Overview
"Which left-hand insert is best for achieving a mirror surface finish on steel while preventing built-up edge at high speeds?"
The TaeguTec TNMG 160404L-VF CT3000 is an advanced Cermet (Ceramic-Metallic) turning insert. Specifically engineered for the finishing stage, the CT3000 grade offers superior chemical stability and resistance to oxidation compared to traditional carbide. This results in an exceptionally sharp cutting edge that produces "mirror-finish" results on ISO P (Steel) workpieces. The VF (Very Fine) chipbreaker is designed with a precision geometry that manages chips perfectly at light depths of cut, making this Left-Hand (L) oriented tool a staple for high-precision mechanical components.
Key Core Advantages
Superior Surface Integrity
Cermet's resistance to Built-Up Edge (BUE) ensures that the cutting edge remains clean, delivering high Ra surface quality.
High-Speed Efficiency
Uncoated CT3000 allows for significantly higher cutting speeds (Vc) than carbide, reducing total cycle time in finishing operations.
VF Precision Chipbreaking
Sharp edge geometry breaks chips effectively even at extremely shallow depths of cut, preventing "bird-nesting" on the part.
Technical Specifications
ISO Designation: TNMG 160404L-VF
T Triangular
N Negative
M Tolerance
G With Hole
160404 0.4mm Rad
L-VF LH-Fine
Standard
Designation
I.C. / Thickness
Corner Radius
Metric (ISO)
TNMG 160404L-VF
9.525 / 4.76 mm
0.40 mm
Imperial (ANSI)
TNMG 331L-VF
3/8" / 3/16"
1/64"
Cermet Recommended Cutting Parameters (CT3000)
Material Group
Cutting Speed (Vc)
Feed Rate (fn)
Low Carbon Steel
250 - 480 m/min
0.05 - 0.20 mm/rev
Alloy Steel
200 - 380 m/min
0.05 - 0.15 mm/rev
Compatible Left-Hand Holders
Applications & Compatibility
Precision Finishing: Ideal for gear shafts, turbine parts, and precision cylinders.
Complex Geometries: Left-hand orientation allows for specialized CNC paths and profiling.
Mirror-Finish Requirements: For workpieces where visual aesthetics are as important as tolerances.
Compatibility: Industry-standard fit for all Left-hand 16mm triangular holders (MTJNL/PSSNL).
TaeguTec Cermet vs. Carbide
Criteria
Cermet (CT3000)
Carbide (TT8125)
Best For
Chemical Stability
Extreme High
Medium
CT3000
Thermal Hardness
Higher
High
CT3000
Edge Toughness
Medium
Extreme High
Carbide
Why Machinists Choose CT3000 Cermet?
While carbide is a general-purpose powerhouse, CT3000 Cermet is a finishing specialist. The secret lies in the ceramic binder, which prevents the carbon in the steel from reacting with the tool at high speeds. This keeps the 0.4mm corner radius sharp and true, even during extended production runs. Paired with the VF chipbreaker, it solves the problem of "bird-nesting" in finishing passes, ensuring the operator can focus on production rather than manual chip clearing. For those requiring tight tolerances and high-aesthetic finishes, the CT3000 is the ultimate industrial grade.
★★★★★
"Mirror finish on 1045 steel shafts. The LH orientation was exactly what our back-turning setup required."
— David L., USA
★★★★★
"Hervorragende Oberflächengüte. CT3000 ist der Beste für das Schlichten bei hoher Geschwindigkeit."
— Klaus M., Germany
★★★★★
"Ottima resistenza all'usura chimica. La finitura Ra è incredibilmente costante."
— Antonio V., Italy
★★★★☆
"Elite performance on precision CNC parts. Reduced our polishing time by 80%."
— Yuki T., Japan
Frequently Asked Questions
Q: Can I use Cermet for interrupted cuts? A: Cermet is more brittle than carbide. It is highly recommended for continuous finishing. For heavy interruptions, please use TaeguTec TT8125 carbide.
Q: Should I use coolant with CT3000? A: While Cermet can run with coolant, it excels in dry finishing because it is resistant to thermal cracking and oxidation.
Q: What does the "VF" stand for? A: "VF" stands for Very Fine. This chipbreaker is specialized for light finishing passes and superior chip control.
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.
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.
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