Taegutec TNMG 160408L-VF CT3000 Cermet Insert Left-Hand High-Feed Finishing (10pcs)

$113.49 USD

Price shown is a starting point. Contact us for a precise quote based on your requirements.

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Description

TaeguTec TNMG 160408L-VF CT3000

Professional Uncoated Cermet for High-Gloss Steel Finishing

Product Overview

"Which left-hand cermet insert is most suitable for high-speed finishing of alloy steel to achieve a mirror-like surface finish?"

The TaeguTec TNMG 160408L-VF CT3000 is the definitive answer for precision machinists. This uncoated Cermet grade is characterized by its high chemical stability, which prevents Built-Up Edge (BUE) and oxidation at the high temperatures common in high-speed turning. The VF (Very Fine) chipbreaker is designed with a sharp cutting edge and narrow groove geometry to provide elite chip control even at minimal depths of cut. With its Left-Hand (L) orientation and 0.8mm corner radius, this insert offers a perfect blend of edge strength and surface integrity for finishing operations on ISO P (Steel) workpieces.

Key Core Advantages

Mirror Finish Results

The Cermet CT3000 substrate maintains a sharp edge longer than carbide, ensuring high-gloss surface Ra and superior dimensional accuracy.

Sharp VF Chipbreaking

Designed for light depths of cut, the VF geometry breaks stringy chips effectively, protecting the part surface from "bird-nesting."

High Speed, Low Wear

Optimized for dry or wet high-speed finishing where tool-life stability and heat resistance are paramount for process security.

Technical Specifications

Model Designation Decoding: TNMG 160408L-VF

T
Triangular
N
Negative
M
Tolerance
G
With Hole
160408
0.8 Rad
L-VF
LH-Fine
Standard Designation Inscribed Circle Radius
Metric (ISO) TNMG 160408L-VF 9.525 mm 0.80 mm
Imperial (ANSI) TNMG 332L-VF 3/8" 1/32"

Recommended Cutting Parameters (CT3000)

Material (ISO P) Vc (m/min) fn (mm/rev)
Low Carbon Steel 250 - 450 0.10 - 0.25
Alloy Steel 180 - 320 0.10 - 0.20

Compatible Left-Hand Holders

Shop LH TNMG 16 Toolholders →

Applications & Compatibility

  • Precision Mechanical Parts: Final surface passes on transmission gears and drive shafts.
  • Complex Back-Turning: Specialized Left-Hand geometry for specific lathe tool post setups.
  • High Ra Finish: Applications where secondary grinding or polishing needs to be eliminated.
  • Compatibility: Standard fit for all 16mm triangular Left-Hand toolholders (MTJNL, PSSNL, etc.).

TaeguTec Cermet vs. Carbide

Grade Type Series Recommended Operation Finish Quality
Cermet (Uncoated) CT3000 High-Speed Finishing Mirror Finish
CVD Carbide TT8125 General Purpose / Med-Fin Standard Finish
CVD Carbide TT9225 General Roughing Rough Surface

Why Choose TaeguTec CT3000?

Machining steel at high speeds requires a tool that can handle "crater wear" and thermal shock. The CT3000 Cermet grade offers a unique chemical inertness that prevents the workpiece material from welding to the insert, which is the primary cause of poor surface finishes in carbide. When paired with the VF chipbreaker, it effectively manages the "chips of the finishing zone"—those small, thin curls that can often ruin a part if not properly broken. For shops running high-precision CNC lathes, the TNMG 160408L-VF is the choice for reliability and aesthetic perfection.

★★★★★

"Outstanding surface finish on 4140 steel. We eliminated our polishing step entirely."

— James R., USA
★★★★★

"Hervorragende Standzeit bei hoher Geschwindigkeit. CT3000 ist der Beste für das Schlichten."

— Klaus W., Germany
★★★★★

"Finitura superficiale incredibile. Il controllo del truciolo VF è molto preciso."

— Marco G., Italy
★★★★☆

"Stable and predictable. Great for our automated production runs."

— Hiroshi T., Japan

Frequently Asked Questions

Q: Can I use CT3000 (Cermet) for interrupted cuts?
A: Cermet is more brittle than carbide. It is highly recommended for continuous finishing. For heavy interruptions, use carbide grade TT8125.
Q: Is coolant required for this grade?
A: Cermet excels in both wet and dry conditions. Dry finishing is often preferred for cermet as it prevents thermal cracking of the edge.
Q: What is the optimal depth of cut (Ap) for the VF chipbreaker?
A: The VF is specialized for light finishing, generally performing best between 0.2mm and 1.5mm Ap.

Pro-Tip: When using CT3000, increase your cutting speed (Vc) by 20% compared to carbide to achieve the most stable tool life and a high-gloss finish.

Technical FAQ & Buying Guide

Are your carbide inserts interchangeable with major brands like Sandvik, Iscar, or Kennametal?

Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.

How do I choose the correct insert grade and chipbreaker for machining Stainless Steel (M) vs. Carbon Steel (P)?

We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:

  • For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
  • For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
What are the recommended cutting speed (Vc) and feed rate (f) parameters to maximize tool life?

The optimal cutting parameters vary depending on the workpiece hardness and operation type:

  • For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
  • For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Do you offer bulk discounts or wholesale pricing for machine shops and distributors?

Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.

What is your international shipping policy and typical lead time for orders?

We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.

How do you guarantee the quality and tolerance precision of your CNC tools?

All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.